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1. Ovarian cancer pathology characteristics as predictors of variant pathogenicity in BRCA1 and BRCA2

Author

O’Mahony, Denise G, Ramus, Susan J, Southey, Melissa C, Meagher, Nicola S, Hadjisavvas, Andreas, John, Esther M, Hamann, Ute, Imyanitov, Evgeny N, Andrulis, Irene L, Sharma, Priyanka, Daly, Mary B, Hake, Christopher R, Weitzel, Jeffrey N, Jakubowska, Anna, Godwin, Andrew K, Arason, Adalgeir, Bane, Anita, Simard, Jacques, Soucy, Penny, Caligo, Maria A, Mai, Phuong L, Claes, Kathleen BM, Teixeira, Manuel R, Chung, Wendy K, Lazaro, Conxi, Hulick, Peter J, Toland, Amanda E, Pedersen, Inge Sokilde, Neuhausen, Susan L, Vega, Ana, de la Hoya, Miguel, Nevanlinna, Heli, Dhawan, Mallika, Zampiga, Valentina, Danesi, Rita, Varesco, Liliana, Gismondi, Viviana, Vellone, Valerio Gaetano, James, Paul A, Janavicius, Ramunas, Nikitina-Zake, Liene, Nielsen, Finn Cilius, van Overeem Hansen, Thomas, Pejovic, Tanja, Borg, Ake, Rantala, Johanna, Offit, Kenneth, Montagna, Marco, Nathanson, Katherine L, Domchek, Susan M, Osorio, Ana, García, María J, Karlan, Beth Y, De Fazio, Anna, Bowtell, David, McGuffog, Lesley, Leslie, Goska, Parsons, Michael T, Dörk, Thilo, Speith, Lisa-Marie, dos Santos, Elizabeth Santana, da Costa, Alexandre André BA, Radice, Paolo, Peterlongo, Paolo, Papi, Laura, Engel, Christoph, Hahnen, Eric, Schmutzler, Rita K, Wappenschmidt, Barbara, Easton, Douglas F, Tischkowitz, Marc, Singer, Christian F, Tan, Yen Yen, Whittemore, Alice S, Sieh, Weiva, Brenton, James D, Yannoukakos, Drakoulis, Fostira, Florentia, Konstantopoulou, Irene, Soukupova, Jana, Vocka, Michal, Chenevix-Trench, Georgia, Pharoah, Paul DP, Antoniou, Antonis C, Goldgar, David E, Spurdle, Amanda B, and Michailidou, Kyriaki

Subjects
Biomedical and Clinical Sciences, Oncology and Carcinogenesis, Rare Diseases, Cancer, Breast Cancer, Genetics, Ovarian Cancer, Aetiology, 2.1 Biological and endogenous factors, Good Health and Well Being, Humans, Female, Virulence, BRCA1 Protein, BRCA2 Protein, Ovarian Neoplasms, Genetic Predisposition to Disease, Breast Neoplasms, HEBON Investigators, GEMO Study Collaborators, AOCS Group, CZECANCA Consortium, Consortium of Investigators of Modifiers of BRCA1/2, Evidence-based Network for the Interpretation of Germline Mutant Alleles Consortium, Public Health and Health Services, Oncology & Carcinogenesis, Oncology and carcinogenesis
Abstract

BackgroundThe distribution of ovarian tumour characteristics differs between germline BRCA1 and BRCA2 pathogenic variant carriers and non-carriers. In this study, we assessed the utility of ovarian tumour characteristics as predictors of BRCA1 and BRCA2 variant pathogenicity, for application using the American College of Medical Genetics and the Association for Molecular Pathology (ACMG/AMP) variant classification system.MethodsData for 10,373 ovarian cancer cases, including carriers and non-carriers of BRCA1 or BRCA2 pathogenic variants, were collected from unpublished international cohorts and consortia and published studies. Likelihood ratios (LR) were calculated for the association of ovarian cancer histology and other characteristics, with BRCA1 and BRCA2 variant pathogenicity. Estimates were aligned to ACMG/AMP code strengths (supporting, moderate, strong).ResultsNo histological subtype provided informative ACMG/AMP evidence in favour of BRCA1 and BRCA2 variant pathogenicity. Evidence against variant pathogenicity was estimated for the mucinous and clear cell histologies (supporting) and borderline cases (moderate). Refined associations are provided according to tumour grade, invasion and age at diagnosis.ConclusionsWe provide detailed estimates for predicting BRCA1 and BRCA2 variant pathogenicity based on ovarian tumour characteristics. This evidence can be combined with other variant information under the ACMG/AMP classification system, to improve classification and carrier clinical management.

Published
2023

2. An original phylogenetic approach identified mitochondrial haplogroup T1a1 as inversely associated with breast cancer risk in BRCA2 mutation carriers

Author

Blein, Sophie, Bardel, Claire, Danjean, Vincent, McGuffog, Lesley, Healey, Sue, Barrowdale, Daniel, Lee, Andrew, Dennis, Joe, Kuchenbaecker, Karoline B, Soucy, Penny, Terry, Mary Beth, Chung, Wendy K, Goldgar, David E, Buys, Saundra S, Breast Cancer Family Registry, Janavicius, Ramunas, Tihomirova, Laima, Tung, Nadine, Dorfling, Cecilia M, van Rensburg, Elizabeth J, Neuhausen, Susan L, Ding, Yuan Chun, Gerdes, Anne-Marie, Ejlertsen, Bent, Nielsen, Finn C, Hansen, Thomas VO, Osorio, Ana, Benitez, Javier, Conejero, Raquel Andrés, Segota, Ena, Weitzel, Jeffrey N, Thelander, Margo, Peterlongo, Paolo, Radice, Paolo, Pensotti, Valeria, Dolcetti, Riccardo, Bonanni, Bernardo, Peissel, Bernard, Zaffaroni, Daniela, Scuvera, Giulietta, Manoukian, Siranoush, Varesco, Liliana, Capone, Gabriele L, Papi, Laura, Ottini, Laura, Yannoukakos, Drakoulis, Konstantopoulou, Irene, Garber, Judy, Hamann, Ute, Donaldson, Alan, Brady, Angela, Brewer, Carole, Foo, Claire, Evans, D Gareth, Frost, Debra, Eccles, Diana, EMBRACE, Douglas, Fiona, Cook, Jackie, Adlard, Julian, Barwell, Julian, Walker, Lisa, Izatt, Louise, Side, Lucy E, Kennedy, M John, Tischkowitz, Marc, Rogers, Mark T, Porteous, Mary E, Morrison, Patrick J, Platte, Radka, Eeles, Ros, Davidson, Rosemarie, Hodgson, Shirley, Cole, Trevor, Godwin, Andrew K, Isaacs, Claudine, Claes, Kathleen, De Leeneer, Kim, Meindl, Alfons, Gehrig, Andrea, Wappenschmidt, Barbara, Sutter, Christian, Engel, Christoph, Niederacher, Dieter, Steinemann, Doris, Plendl, Hansjoerg, Kast, Karin, Rhiem, Kerstin, Ditsch, Nina, Arnold, Norbert, Varon-Mateeva, Raymonda, Schmutzler, Rita K, Preisler-Adams, Sabine, Markov, Nadja Bogdanova, Wang-Gohrke, Shan, de Pauw, Antoine, Lefol, Cédrick, Lasset, Christine, Leroux, Dominique, and Rouleau, Etienne

Subjects
Biomedical and Clinical Sciences, Oncology and Carcinogenesis, Genetics, Breast Cancer, Cancer, 2.1 Biological and endogenous factors, Aetiology, BRCA1 Protein, Breast Neoplasms, Female, Genes, BRCA2, Genes, Mitochondrial, Genetic Predisposition to Disease, Haplotypes, Heterozygote, Humans, Mutation, Phylogeny, Risk, Breast Cancer Family Registry, EMBRACE, GEMO Study Collaborators, HEBON, Oncology & Carcinogenesis, Oncology and carcinogenesis
Abstract

IntroductionIndividuals carrying pathogenic mutations in the BRCA1 and BRCA2 genes have a high lifetime risk of breast cancer. BRCA1 and BRCA2 are involved in DNA double-strand break repair, DNA alterations that can be caused by exposure to reactive oxygen species, a main source of which are mitochondria. Mitochondrial genome variations affect electron transport chain efficiency and reactive oxygen species production. Individuals with different mitochondrial haplogroups differ in their metabolism and sensitivity to oxidative stress. Variability in mitochondrial genetic background can alter reactive oxygen species production, leading to cancer risk. In the present study, we tested the hypothesis that mitochondrial haplogroups modify breast cancer risk in BRCA1/2 mutation carriers.MethodsWe genotyped 22,214 (11,421 affected, 10,793 unaffected) mutation carriers belonging to the Consortium of Investigators of Modifiers of BRCA1/2 for 129 mitochondrial polymorphisms using the iCOGS array. Haplogroup inference and association detection were performed using a phylogenetic approach. ALTree was applied to explore the reference mitochondrial evolutionary tree and detect subclades enriched in affected or unaffected individuals.ResultsWe discovered that subclade T1a1 was depleted in affected BRCA2 mutation carriers compared with the rest of clade T (hazard ratio (HR) = 0.55; 95% confidence interval (CI), 0.34 to 0.88; P = 0.01). Compared with the most frequent haplogroup in the general population (that is, H and T clades), the T1a1 haplogroup has a HR of 0.62 (95% CI, 0.40 to 0.95; P = 0.03). We also identified three potential susceptibility loci, including G13708A/rs28359178, which has demonstrated an inverse association with familial breast cancer risk.ConclusionsThis study illustrates how original approaches such as the phylogeny-based method we used can empower classical molecular epidemiological studies aimed at identifying association or risk modification effects.

Published
2015

3. Candidate Genetic Modifiers for Breast and Ovarian Cancer Risk in BRCA1 and BRCA2 Mutation Carriers

Author

Peterlongo, Paolo, Chang-Claude, Jenny, Moysich, Kirsten B, Rudolph, Anja, Schmutzler, Rita K, Simard, Jacques, Soucy, Penny, Eeles, Rosalind A, Easton, Douglas F, Hamann, Ute, Wilkening, Stefan, Chen, Bowang, Rookus, Matti A, Schmidt, Marjanka K, van der Baan, Frederieke H, Spurdle, Amanda B, Walker, Logan C, Lose, Felicity, Maia, Ana-Teresa, Montagna, Marco, Matricardi, Laura, Lubinski, Jan, Jakubowska, Anna, Garcia, Encarna B Gómez, Olopade, Olufunmilayo I, Nussbaum, Robert L, Nathanson, Katherine L, Domchek, Susan M, Rebbeck, Timothy R, Arun, Banu K, Karlan, Beth Y, Orsulic, Sandra, Lester, Jenny, Chung, Wendy K, Miron, Alex, Southey, Melissa C, Goldgar, David E, Buys, Saundra S, Janavicius, Ramunas, Dorfling, Cecilia M, van Rensburg, Elizabeth J, Ding, Yuan Chun, Neuhausen, Susan L, Hansen, Thomas VO, Gerdes, Anne-Marie, Ejlertsen, Bent, Jønson, Lars, Osorio, Ana, Martínez-Bouzas, Cristina, Benitez, Javier, Conway, Edye E, Blazer, Kathleen R, Weitzel, Jeffrey N, Manoukian, Siranoush, Peissel, Bernard, Zaffaroni, Daniela, Scuvera, Giulietta, Barile, Monica, Ficarazzi, Filomena, Mariette, Frederique, Fortuzzi, Stefano, Viel, Alessandra, Giannini, Giuseppe, Papi, Laura, Martayan, Aline, Tibiletti, Maria Grazia, Radice, Paolo, Vratimos, Athanassios, Fostira, Florentia, Garber, Judy E, Donaldson, Alan, Brewer, Carole, Foo, Claire, Evans, D Gareth R, Frost, Debra, Eccles, Diana, Brady, Angela, Cook, Jackie, Tischkowitz, Marc, Adlard, Julian, Barwell, Julian, Walker, Lisa, Izatt, Louise, Side, Lucy E, Kennedy, M John, Rogers, Mark T, Porteous, Mary E, Morrison, Patrick J, Platte, Radka, Davidson, Rosemarie, Hodgson, Shirley V, Ellis, Steve, Cole, Trevor, behalf of EMBRACE, on, Godwin, Andrew K, Claes, Kathleen, Van Maerken, Tom, Meindl, Alfons, Gehrig, Andrea, and Sutter, Christian

Subjects
Health Services and Systems, Biomedical and Clinical Sciences, Health Sciences, Oncology and Carcinogenesis, Cancer, Women's Health, Rare Diseases, Human Genome, Breast Cancer, Genetic Testing, Prevention, Genetics, Ovarian Cancer, 2.1 Biological and endogenous factors, Aetiology, Adult, Breast Neoplasms, Cohort Studies, Female, Genes, BRCA1, Genes, BRCA2, Humans, Mutation, Ovarian Neoplasms, Polymorphism, Single Nucleotide, Retrospective Studies, Young Adult, EMBRACE, GEMO Study Collaborators, HEBON, KConFab Investigators, Medical and Health Sciences, Epidemiology, Biomedical and clinical sciences, Health sciences
Abstract

BackgroundBRCA1 and BRCA2 mutation carriers are at substantially increased risk for developing breast and ovarian cancer. The incomplete penetrance coupled with the variable age at diagnosis in carriers of the same mutation suggests the existence of genetic and nongenetic modifying factors. In this study, we evaluated the putative role of variants in many candidate modifier genes.MethodsGenotyping data from 15,252 BRCA1 and 8,211 BRCA2 mutation carriers, for known variants (n = 3,248) located within or around 445 candidate genes, were available through the iCOGS custom-designed array. Breast and ovarian cancer association analysis was performed within a retrospective cohort approach.ResultsThe observed P values of association ranged between 0.005 and 1.000. None of the variants was significantly associated with breast or ovarian cancer risk in either BRCA1 or BRCA2 mutation carriers, after multiple testing adjustments.ConclusionThere is little evidence that any of the evaluated candidate variants act as modifiers of breast and/or ovarian cancer risk in BRCA1 or BRCA2 mutation carriers.ImpactGenome-wide association studies have been more successful at identifying genetic modifiers of BRCA1/2 penetrance than candidate gene studies.

Published
2015

4. Associations of common breast cancer susceptibility alleles with risk of breast cancer subtypes in BRCA1 and BRCA2 mutation carriers.

Author

Kuchenbaecker, Karoline B, Neuhausen, Susan L, Robson, Mark, Barrowdale, Daniel, McGuffog, Lesley, Mulligan, Anna Marie, Andrulis, Irene L, Spurdle, Amanda B, Schmidt, Marjanka K, Schmutzler, Rita K, Engel, Christoph, Wappenschmidt, Barbara, Nevanlinna, Heli, Thomassen, Mads, Southey, Melissa, Radice, Paolo, Ramus, Susan J, Domchek, Susan M, Nathanson, Katherine L, Lee, Andrew, Healey, Sue, Nussbaum, Robert L, Rebbeck, Timothy R, Arun, Banu K, James, Paul, Karlan, Beth Y, Lester, Jenny, Cass, Ilana, Breast Cancer Family Registry, Terry, Mary Beth, Daly, Mary B, Goldgar, David E, Buys, Saundra S, Janavicius, Ramunas, Tihomirova, Laima, Tung, Nadine, Dorfling, Cecilia M, van Rensburg, Elizabeth J, Steele, Linda, v O Hansen, Thomas, Ejlertsen, Bent, Gerdes, Anne-Marie, Nielsen, Finn C, Dennis, Joe, Cunningham, Julie, Hart, Steven, Slager, Susan, Osorio, Ana, Benitez, Javier, Duran, Mercedes, Weitzel, Jeffrey N, Tafur, Isaac, Hander, Mary, Peterlongo, Paolo, Manoukian, Siranoush, Peissel, Bernard, Roversi, Gaia, Scuvera, Giulietta, Bonanni, Bernardo, Mariani, Paolo, Volorio, Sara, Dolcetti, Riccardo, Varesco, Liliana, Papi, Laura, Tibiletti, Maria Grazia, Giannini, Giuseppe, Fostira, Florentia, Konstantopoulou, Irene, Garber, Judy, Hamann, Ute, Donaldson, Alan, Brewer, Carole, Foo, Claire, Evans, D Gareth, Frost, Debra, Eccles, Diana, EMBRACE Study, Douglas, Fiona, Brady, Angela, Cook, Jackie, Tischkowitz, Marc, Adlard, Julian, Barwell, Julian, Ong, Kai-ren, Walker, Lisa, Izatt, Louise, Side, Lucy E, Kennedy, M John, Rogers, Mark T, Porteous, Mary E, Morrison, Patrick J, Platte, Radka, Eeles, Ros, Davidson, Rosemarie, Hodgson, Shirley, Ellis, Steve, Godwin, Andrew K, Rhiem, Kerstin, Meindl, Alfons, and Ditsch, Nina

Subjects
Breast Cancer Family Registry, EMBRACE Study, GEMO Study Collaborators, HEBON, KConFab Investigators, CIMBA, Humans, Carcinoma, Carcinoma, Ductal, Breast, Carcinoma, Lobular, Breast Neoplasms, Genetic Predisposition to Disease, Receptor, erbB-2, Receptors, Estrogen, Receptors, Progesterone, Neoplasm Staging, Heterozygote, Alleles, Genes, BRCA1, Genes, BRCA2, Adult, Aged, Middle Aged, Female, Neoplasm Grading, Receptor, ErbB-2, Ductal, Breast, Lobular, Receptor, erbB-2, Receptors, Estrogen, Progesterone, Genes, BRCA1, BRCA2, ErbB-2, Prevention, Breast Cancer, Clinical Research, Genetics, Cancer, 2.1 Biological and endogenous factors, Oncology & Carcinogenesis, Oncology and Carcinogenesis
Abstract

IntroductionMore than 70 common alleles are known to be involved in breast cancer (BC) susceptibility, and several exhibit significant heterogeneity in their associations with different BC subtypes. Although there are differences in the association patterns between BRCA1 and BRCA2 mutation carriers and the general population for several loci, no study has comprehensively evaluated the associations of all known BC susceptibility alleles with risk of BC subtypes in BRCA1 and BRCA2 carriers.MethodsWe used data from 15,252 BRCA1 and 8,211 BRCA2 carriers to analyze the associations between approximately 200,000 genetic variants on the iCOGS array and risk of BC subtypes defined by estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and triple-negative- (TN) status; morphologic subtypes; histological grade; and nodal involvement.ResultsThe estimated BC hazard ratios (HRs) for the 74 known BC alleles in BRCA1 carriers exhibited moderate correlations with the corresponding odds ratios from the general population. However, their associations with ER-positive BC in BRCA1 carriers were more consistent with the ER-positive associations in the general population (intraclass correlation (ICC) = 0.61, 95% confidence interval (CI): 0.45 to 0.74), and the same was true when considering ER-negative associations in both groups (ICC = 0.59, 95% CI: 0.42 to 0.72). Similarly, there was strong correlation between the ER-positive associations for BRCA1 and BRCA2 carriers (ICC = 0.67, 95% CI: 0.52 to 0.78), whereas ER-positive associations in any one of the groups were generally inconsistent with ER-negative associations in any of the others. After stratifying by ER status in mutation carriers, additional significant associations were observed. Several previously unreported variants exhibited associations at P

Published
2014

5. Refined histopathological predictors of BRCA1 and BRCA2 mutation status: a large-scale analysis of breast cancer characteristics from the BCAC, CIMBA, and ENIGMA consortia.

Author

Spurdle, Amanda B, Couch, Fergus J, Parsons, Michael T, McGuffog, Lesley, Barrowdale, Daniel, Bolla, Manjeet K, Wang, Qin, Healey, Sue, Schmutzler, Rita, Wappenschmidt, Barbara, Rhiem, Kerstin, Hahnen, Eric, Engel, Christoph, Meindl, Alfons, Ditsch, Nina, Arnold, Norbert, Plendl, Hansjoerg, Niederacher, Dieter, Sutter, Christian, Wang-Gohrke, Shan, Steinemann, Doris, Preisler-Adams, Sabine, Kast, Karin, Varon-Mateeva, Raymonda, Ellis, Steve, Frost, Debra, Platte, Radka, Perkins, Jo, Evans, D Gareth, Izatt, Louise, Eeles, Ros, Adlard, Julian, Davidson, Rosemarie, Cole, Trevor, Scuvera, Giulietta, Manoukian, Siranoush, Bonanni, Bernardo, Mariette, Frederique, Fortuzzi, Stefano, Viel, Alessandra, Pasini, Barbara, Papi, Laura, Varesco, Liliana, Balleine, Rosemary, Nathanson, Katherine L, Domchek, Susan M, Offitt, Kenneth, Jakubowska, Anna, Lindor, Noralane, Thomassen, Mads, Jensen, Uffe Birk, Rantala, Johanna, Borg, Åke, Andrulis, Irene L, Miron, Alexander, Hansen, Thomas VO, Caldes, Trinidad, Neuhausen, Susan L, Toland, Amanda E, Nevanlinna, Heli, Montagna, Marco, Garber, Judy, Godwin, Andrew K, Osorio, Ana, Factor, Rachel E, Terry, Mary B, Rebbeck, Timothy R, Karlan, Beth Y, Southey, Melissa, Rashid, Muhammad Usman, Tung, Nadine, Pharoah, Paul DP, Blows, Fiona M, Dunning, Alison M, Provenzano, Elena, Hall, Per, Czene, Kamila, Schmidt, Marjanka K, Broeks, Annegien, Cornelissen, Sten, Verhoef, Senno, Fasching, Peter A, Beckmann, Matthias W, Ekici, Arif B, Slamon, Dennis J, Bojesen, Stig E, Nordestgaard, Børge G, Nielsen, Sune F, Flyger, Henrik, Chang-Claude, Jenny, Flesch-Janys, Dieter, Rudolph, Anja, Seibold, Petra, Aittomäki, Kristiina, Muranen, Taru A, Heikkilä, Päivi, Blomqvist, Carl, Figueroa, Jonine, Chanock, Stephen J, and Brinton, Louise

Subjects
ABCTB Investigators, EMBRACE Group, GENICA Network, HEBON Group, kConFab Investigators, Humans, Carcinoma, Breast Neoplasms, Receptor, erbB-2, Receptors, Estrogen, Receptors, Progesterone, Neoplasm Staging, Likelihood Functions, Age Factors, Mutation, Genes, BRCA1, Genes, BRCA2, Adult, Aged, Middle Aged, Female, Neoplasm Grading, Triple Negative Breast Neoplasms, Receptor, ErbB-2, Receptor, erbB-2, Receptors, Estrogen, Progesterone, Genes, BRCA1, BRCA2, ErbB-2, Prevention, Breast Cancer, Cancer, Genetics, 4.2 Evaluation of markers and technologies, Oncology & Carcinogenesis, Oncology and Carcinogenesis
Abstract

IntroductionThe distribution of histopathological features of invasive breast tumors in BRCA1 or BRCA2 germline mutation carriers differs from that of individuals with no known mutation. Histopathological features thus have utility for mutation prediction, including statistical modeling to assess pathogenicity of BRCA1 or BRCA2 variants of uncertain clinical significance. We analyzed large pathology datasets accrued by the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA) and the Breast Cancer Association Consortium (BCAC) to reassess histopathological predictors of BRCA1 and BRCA2 mutation status, and provide robust likelihood ratio (LR) estimates for statistical modeling.MethodsSelection criteria for study/center inclusion were estrogen receptor (ER) status or grade data available for invasive breast cancer diagnosed younger than 70 years. The dataset included 4,477 BRCA1 mutation carriers, 2,565 BRCA2 mutation carriers, and 47,565 BCAC breast cancer cases. Country-stratified estimates of the likelihood of mutation status by histopathological markers were derived using a Mantel-Haenszel approach.ResultsER-positive phenotype negatively predicted BRCA1 mutation status, irrespective of grade (LRs from 0.08 to 0.90). ER-negative grade 3 histopathology was more predictive of positive BRCA1 mutation status in women 50 years or older (LR = 4.13 (3.70 to 4.62)) versus younger than 50 years (LR = 3.16 (2.96 to 3.37)). For BRCA2, ER-positive grade 3 phenotype modestly predicted positive mutation status irrespective of age (LR = 1.7-fold), whereas ER-negative grade 3 features modestly predicted positive mutation status at 50 years or older (LR = 1.54 (1.27 to 1.88)). Triple-negative tumor status was highly predictive of BRCA1 mutation status for women younger than 50 years (LR = 3.73 (3.43 to 4.05)) and 50 years or older (LR = 4.41 (3.86 to 5.04)), and modestly predictive of positive BRCA2 mutation status in women 50 years or older (LR = 1.79 (1.42 to 2.24)).ConclusionsThese results refine likelihood-ratio estimates for predicting BRCA1 and BRCA2 mutation status by using commonly measured histopathological features. Age at diagnosis is an important variable for most analyses, and grade is more informative than ER status for BRCA2 mutation carrier prediction. The estimates will improve BRCA1 and BRCA2 variant classification and inform patient mutation testing and clinical management.

Published
2014

6. Refined histopathological predictors of BRCA1 and BRCA2mutation status: a large-scale analysis of breast cancer characteristics from the BCAC, CIMBA, and ENIGMA consortia

Author

Spurdle, Amanda B, Couch, Fergus J, Parsons, Michael T, McGuffog, Lesley, Barrowdale, Daniel, Bolla, Manjeet K, Wang, Qin, Healey, Sue, Schmutzler, Rita Katharina, Wappenschmidt, Barbara, Rhiem, Kerstin, Hahnen, Eric, Engel, Christoph, Meindl, Alfons, Ditsch, Nina, Arnold, Norbert, Plendl, Hansjoerg, Niederacher, Dieter, Sutter, Christian, Wang-Gohrke, Shan, Steinemann, Doris, Preisler-Adams, Sabine, Kast, Karin, Varon-Mateeva, Raymonda, Ellis, Steve, Frost, Debra, Platte, Radka, Perkins, Jo, Evans, D Gareth, Izatt, Louise, Eeles, Ros, Adlard, Julian, Davidson, Rosemarie, Cole, Trevor, Scuvera, Giulietta, Manoukian, Siranoush, Bonanni, Bernardo, Mariette, Frederique, Fortuzzi, Stefano, Viel, Alessandra, Pasini, Barbara, Papi, Laura, Varesco, Liliana, Balleine, Rosemary, Nathanson, Katherine L, Domchek, Susan M, Offitt, Kenneth, Jakubowska, Anna, Lindor, Noralane, Thomassen, Mads, Jensen, Uffe Birk, Rantala, Johanna, Borg, Åke, Andrulis, Irene L, Miron, Alexander, Hansen, Thomas VO, Caldes, Trinidad, Neuhausen, Susan L, Toland, Amanda E, Nevanlinna, Heli, Montagna, Marco, Garber, Judy, Godwin, Andrew K, Osorio, Ana, Factor, Rachel E, Terry, Mary B, Rebbeck, Timothy R, Karlan, Beth Y, Southey, Melissa, Rashid, Muhammad Usman, Tung, Nadine, Pharoah, Paul DP, Blows, Fiona M, Dunning, Alison M, Provenzano, Elena, Hall, Per, Czene, Kamila, Schmidt, Marjanka K, Broeks, Annegien, Cornelissen, Sten, Verhoef, Senno, Fasching, Peter A, Beckmann, Matthias W, Ekici, Arif B, Slamon, Dennis J, Bojesen, Stig E, Nordestgaard, Børge G, Nielsen, Sune F, Flyger, Henrik, Chang-Claude, Jenny, Flesch-Janys, Dieter, Rudolph, Anja, Seibold, Petra, Aittomäki, Kristiina, Muranen, Taru A, Heikkilä, Päivi, Blomqvist, Carl, Figueroa, Jonine, Chanock, Stephen J, and Brinton, Louise

Subjects
Biomedical and Clinical Sciences, Oncology and Carcinogenesis, Breast Cancer, Cancer, Prevention, Genetics, Detection, screening and diagnosis, 4.2 Evaluation of markers and technologies, Adult, Age Factors, Aged, Breast Neoplasms, Carcinoma, Female, Genes, BRCA1, Genes, BRCA2, Humans, Likelihood Functions, Middle Aged, Mutation, Neoplasm Grading, Neoplasm Staging, Receptor, ErbB-2, Receptors, Estrogen, Receptors, Progesterone, Triple Negative Breast Neoplasms, ABCTB Investigators, EMBRACE Group, GENICA Network, HEBON Group, kConFab Investigators, Receptor, erbB-2, Oncology & Carcinogenesis, Oncology and carcinogenesis
Abstract

The distribution of histopathological features of invasive breast tumors in BRCA1 or BRCA2 germline mutation carriers differs from that of individuals with no known mutation. Histopathological features thus have utility for mutation prediction, including statistical modeling to assess pathogenicity of BRCA1 or BRCA2 variants of uncertain clinical significance. We analyzed large pathology datasets accrued by the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA) and the Breast Cancer Association Consortium (BCAC) to reassess histopathological predictors of BRCA1 and BRCA2 mutation status, and provide robust likelihood ratio (LR) estimates for statistical modeling. Selection criteria for study/center inclusion were estrogen receptor (ER) status or grade data available for invasive breast cancer diagnosed younger than 70 years. The dataset included 4,477 BRCA1 mutation carriers, 2,565 BRCA2 mutation carriers, and 47,565 BCAC breast cancer cases. Country-stratified estimates of the likelihood of mutation status by histopathological markers were derived using a Mantel-Haenszel approach. ER-positive phenotype negatively predicted BRCA1 mutation status, irrespective of grade (LRs from 0.08 to 0.90). ER-negative grade 3 histopathology was more predictive of positive BRCA1 mutation status in women 50 years or older (LR = 4.13 (3.70 to 4.62)) versus younger than 50 years (LR = 3.16 (2.96 to 3.37)). For BRCA2, ER-positive grade 3 phenotype modestly predicted positive mutation status irrespective of age (LR = 1.7-fold), whereas ER-negative grade 3 features modestly predicted positive mutation status at 50 years or older (LR = 1.54 (1.27 to 1.88)). Triple-negative tumor status was highly predictive of BRCA1 mutation status for women younger than 50 years (LR = 3.73 (3.43 to 4.05)) and 50 years or older (LR = 4.41 (3.86 to 5.04)), and modestly predictive of positive BRCA2 mutation status in women 50 years or older (LR = 1.79 (1.42 to 2.24)). These results refine likelihood-ratio estimates for predicting BRCA1 and BRCA2 mutation status by using commonly measured histopathological features. Age at diagnosis is an important variable for most analyses, and grade is more informative than ER status for BRCA2 mutation carrier prediction. The estimates will improve BRCA1 and BRCA2 variant classification and inform patient mutation testing and clinical management.

Published
2014

7. DNA Glycosylases Involved in Base Excision Repair May Be Associated with Cancer Risk in BRCA1 and BRCA2 Mutation Carriers

Author

Osorio, Ana, Milne, Roger L, Kuchenbaecker, Karoline, Vaclová, Tereza, Pita, Guillermo, Alonso, Rosario, Peterlongo, Paolo, Blanco, Ignacio, de la Hoya, Miguel, Duran, Mercedes, Díez, Orland, Ramón y Cajal, Teresa, Konstantopoulou, Irene, Martínez-Bouzas, Cristina, Andrés Conejero, Raquel, Soucy, Penny, McGuffog, Lesley, Barrowdale, Daniel, Lee, Andrew, SWE-BRCA, Arver, Brita, Rantala, Johanna, Loman, Niklas, Ehrencrona, Hans, Olopade, Olufunmilayo I, Beattie, Mary S, Domchek, Susan M, Nathanson, Katherine, Rebbeck, Timothy R, Arun, Banu K, Karlan, Beth Y, Walsh, Christine, Lester, Jenny, John, Esther M, Whittemore, Alice S, Daly, Mary B, Southey, Melissa, Hopper, John, Terry, Mary B, Buys, Saundra S, Janavicius, Ramunas, Dorfling, Cecilia M, van Rensburg, Elizabeth J, Steele, Linda, Neuhausen, Susan L, Ding, Yuan Chun, Hansen, Thomas VO, Jønson, Lars, Ejlertsen, Bent, Gerdes, Anne-Marie, Infante, Mar, Herráez, Belén, Moreno, Leticia Thais, Weitzel, Jeffrey N, Herzog, Josef, Weeman, Kisa, Manoukian, Siranoush, Peissel, Bernard, Zaffaroni, Daniela, Scuvera, Giulietta, Bonanni, Bernardo, Mariette, Frederique, Volorio, Sara, Viel, Alessandra, Varesco, Liliana, Papi, Laura, Ottini, Laura, Tibiletti, Maria Grazia, Radice, Paolo, Yannoukakos, Drakoulis, Garber, Judy, Ellis, Steve, Frost, Debra, Platte, Radka, Fineberg, Elena, Evans, Gareth, Lalloo, Fiona, Izatt, Louise, Eeles, Ros, Adlard, Julian, Davidson, Rosemarie, Cole, Trevor, Eccles, Diana, Cook, Jackie, Hodgson, Shirley, Brewer, Carole, Tischkowitz, Marc, Douglas, Fiona, Porteous, Mary, Side, Lucy, Walker, Lisa, Morrison, Patrick, Donaldson, Alan, Kennedy, John, Foo, Claire, Godwin, Andrew K, Schmutzler, Rita Katharina, Wappenschmidt, Barbara, Rhiem, Kerstin, and Engel, Christoph

Subjects
Biological Sciences, Genetics, Cancer, Genetic Testing, Rare Diseases, Breast Cancer, Prevention, Ovarian Cancer, 2.1 Biological and endogenous factors, Aetiology, Adolescent, Adult, Aged, Aged, 80 and over, BRCA1 Protein, BRCA2 Protein, Breast Neoplasms, DNA Glycosylases, DNA Repair, Female, Genetic Predisposition to Disease, Genotype, Humans, Middle Aged, Ovarian Neoplasms, Polymorphism, Single Nucleotide, Risk, SWE-BRCA, HEBON, KConFab Investigators, Developmental Biology
Abstract

Single Nucleotide Polymorphisms (SNPs) in genes involved in the DNA Base Excision Repair (BER) pathway could be associated with cancer risk in carriers of mutations in the high-penetrance susceptibility genes BRCA1 and BRCA2, given the relation of synthetic lethality that exists between one of the components of the BER pathway, PARP1 (poly ADP ribose polymerase), and both BRCA1 and BRCA2. In the present study, we have performed a comprehensive analysis of 18 genes involved in BER using a tagging SNP approach in a large series of BRCA1 and BRCA2 mutation carriers. 144 SNPs were analyzed in a two stage study involving 23,463 carriers from the CIMBA consortium (the Consortium of Investigators of Modifiers of BRCA1 and BRCA2). Eleven SNPs showed evidence of association with breast and/or ovarian cancer at p

Published
2014

8. Association of breast cancer risk in BRCA1 and BRCA2 mutation carriers with genetic variants showing differential allelic expression: identification of a modifier of breast cancer risk at locus 11q22.3

Author

Hamdi, Yosr, Soucy, Penny, Kuchenbaeker, Karoline B., Pastinen, Tomi, Droit, Arnaud, Lemaçon, Audrey, Adlard, Julian, Aittomäki, Kristiina, Andrulis, Irene L., Arason, Adalgeir, Arnold, Norbert, Arun, Banu K., Azzollini, Jacopo, Bane, Anita, Barjhoux, Laure, Barrowdale, Daniel, Benitez, Javier, Berthet, Pascaline, Blok, Marinus J., Bobolis, Kristie, Bonadona, Valérie, Bonanni, Bernardo, Bradbury, Angela R., Brewer, Carole, Buecher, Bruno, Buys, Saundra S., Caligo, Maria A., Chiquette, Jocelyne, Chung, Wendy K., Claes, Kathleen B. M., Daly, Mary B., Damiola, Francesca, Davidson, Rosemarie, De la Hoya, Miguel, De Leeneer, Kim, Diez, Orland, Ding, Yuan Chun, Dolcetti, Riccardo, Domchek, Susan M., Dorfling, Cecilia M., Eccles, Diana, Eeles, Ros, Einbeigi, Zakaria, Ejlertsen, Bent, Engel, Christoph, Gareth Evans, D., Feliubadalo, Lidia, Foretova, Lenka, Fostira, Florentia, Foulkes, William D., Fountzilas, George, Friedman, Eitan, Frost, Debra, Ganschow, Pamela, Ganz, Patricia A., Garber, Judy, Gayther, Simon A., Gerdes, Anne-Marie, Glendon, Gord, Godwin, Andrew K., Goldgar, David E., Greene, Mark H., Gronwald, Jacek, Hahnen, Eric, Hamann, Ute, Hansen, Thomas V. O., Hart, Steven, Hays, John L., Hogervorst, Frans B. L., Hulick, Peter J., Imyanitov, Evgeny N., Isaacs, Claudine, Izatt, Louise, Jakubowska, Anna, James, Paul, Janavicius, Ramunas, Jensen, Uffe Birk, John, Esther M., Joseph, Vijai, Just, Walter, Kaczmarek, Katarzyna, Karlan, Beth Y., Kets, Carolien M., Kirk, Judy, Kriege, Mieke, Laitman, Yael, Laurent, Maïté, Lazaro, Conxi, Leslie, Goska, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Loman, Niklas, Loud, Jennifer T., Manoukian, Siranoush, Mariani, Milena, Mazoyer, Sylvie, McGuffog, Lesley, Meijers-Heijboer, Hanne E. J., Meindl, Alfons, Miller, Austin, Montagna, Marco, Mulligan, Anna Marie, Nathanson, Katherine L., Neuhausen, Susan L., Nevanlinna, Heli, Nussbaum, Robert L., Olah, Edith, Olopade, Olufunmilayo I., Ong, Kai-ren, Oosterwijk, Jan C., Osorio, Ana, Papi, Laura, Park, Sue Kyung, Pedersen, Inge Sokilde, Peissel, Bernard, Segura, Pedro Perez, Peterlongo, Paolo, Phelan, Catherine M., Radice, Paolo, Rantala, Johanna, Rappaport-Fuerhauser, Christine, Rennert, Gad, Richardson, Andrea, Robson, Mark, Rodriguez, Gustavo C., Rookus, Matti A., Schmutzler, Rita Katharina, Sevenet, Nicolas, Shah, Payal D., Singer, Christian F., Slavin, Thomas P., Snape, Katie, Sokolowska, Johanna, Sønderstrup, Ida Marie Heeholm, Southey, Melissa, Spurdle, Amanda B., Stadler, Zsofia, Stoppa-Lyonnet, Dominique, Sukiennicki, Grzegorz, Sutter, Christian, Tan, Yen, Tea, Muy-Kheng, Teixeira, Manuel R., Teulé, Alex, Teo, Soo-Hwang, Terry, Mary Beth, Thomassen, Mads, Tihomirova, Laima, Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda Ewart, Tung, Nadine, van den Ouweland, Ans M. W., van der Luijt, Rob B., van Engelen, Klaartje, van Rensburg, Elizabeth J., Varon-Mateeva, Raymonda, Wappenschmidt, Barbara, Wijnen, Juul T., Rebbeck, Timothy, Chenevix-Trench, Georgia, Offit, Kenneth, Couch, Fergus J., Nord, Silje, Easton, Douglas F., Antoniou, Antonis C., Simard, Jacques, EMBRACE, GEMO Study Collaborators, HEBON, and KConFab Investigators

Published
2017
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9. Breast cancer: the first comparative evaluation of oncobiome composition between males and females.

Author

Niccolai, Elena, Baldi, Simone, Nannini, Giulia, Gensini, Francesca, Papi, Laura, Vezzosi, Vania, Bianchi, Simonetta, Orzalesi, Lorenzo, Ramazzotti, Matteo, and Amedei, Amedeo

Subjects
MALE breast cancer, BREAST cancer, PATIENTS, PAPILLOMAVIRUSES, MALE infertility, PROGNOSIS, COLONIZATION (Ecology), FEMALES
Abstract

Background: Emerging evidence suggests that breast microbiota dysbiosis contributes to cancer initiation, progression, prognosis and treatment efficacy. Anyway, available data are referred only to female patients, and studies on males are completely missing. Male breast cancer (MBC) is 70–100 times less frequent, but the mortality rate adjusted to incidence is higher in men than in females. Currently, MBC diagnostic approaches and treatments have generally been extrapolated from the clinical experience gained in women, while few studies focus on characterizing male cancer biology. Taking into account the rising importance of the oncobiome field and the need of MBC targeted studies, we explored the breast cancer oncobiome of male and female patients. Methods: 16S rRNA gene sequencing was performed in 20 tumor and 20 non-pathological adjacent FFPE breast tissues from male and female patients. Results: We documented, for the first time, the presence of a sexually dimorphic breast-associated microbiota, here defined as "breast microgenderome". Moreover, the paired analysis of tumor and non-pathological adjacent tissues suggests the presence of a cancer-associated dysbiosis in male patients, with surrounding tissue conserving a healthier microbiome, whereas in female patients, the entire breast tissue is predisposed to cancer development. Finally, the phylum Tenericutes, especially the genera Mesoplasma and Mycobacterium, could to be involved in breast carcinogenesis, in both sexes, deserving further investigation, not only for its role in cancer development but even as potential prognostic biomarker. Conclusions: Breast microbiota characterization can enhance the understanding of male breast cancer pathogenesis, being useful for detection of new prognostic biomarkers and development of innovative personalized therapies, remarking the relevant gender differences. Plain Language Summary: Breast tissue can become inhabited by microbes through different pathways, and an uneven distribution of these microorganisms could potentially contribute to the development, prognosis, and treatment response of breast cancer. However, the current available data primarily focus on female patients, with a significant dearth of studies on males. To address this gap, the present study investigates the microbiota composition of both tumorous and healthy breast tissue samples from both male and female patients. The findings of this research highlight a disparity in the types of bacteria present in male and female breast tissue. Specifically, it shows that male patients with breast cancer have a higher imbalance of bacteria in the cancerous area compared to the surrounding healthy tissue. In contrast, in females the dysbiosis extend to the whole breast tissue. Moreover, the study identifies specific strains of bacteria that might potentially be involved in the development of breast cancer in both males and females. In conclusion, this study underscores the significance of microbial colonization in breast tissue and its potential influence on breast cancer in both males and females. By expanding our understanding of the microbial composition in breast cancer, we can pave the way for innovative diagnostic methods and treatment approaches for male breast cancer, while simultaneously advancing our knowledge of this complex disease. Highlights: Few studies have been conducted to describe male cancer biology in comparison with female breast cancer. For the first time, we discovered a sexually dimorphic breast-associated microbiome, termed "breast microgenderome". In females, the dysbiosis extend to the whole breast tissue, while in men, it appears to be confined to the tumor site. Tenericutes, particularly the genera Mesoplasma and Mycobacterium, may be implicated in breast carcinogenesis in both sexes. [ABSTRACT FROM AUTHOR]

Published
2023
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10. Early-onset malignant phyllodes breast tumor in a patient with germline pathogenic variants in NF1 and BRCA1 genes.

Author

Gensini, Francesca, Sestini, Roberta, De Luca, Alessandro, Pinna, Valentina, Daniele, Paola, Orzalesi, Lorenzo, Petrella, Maria Cristina, Porfirio, Berardino, and Papi, Laura

Subjects
BREAST tumors, BRCA genes, GERM cells, PHYLLODES tumors, BREAST cancer, GENE silencing
Abstract

We present a 24-year-old female patient affected by neurofibromatosis type 1 (NF1) who developed a malignant phyllodes tumor of the breast. The molecular studies showed that the patient carried a heterozygous inactivating deleterious variant in BRCA1 inherited from the father associated with a germline de novo pathogenic alteration in NF1; the tumor presented a biallelic inactivation of both genes. Therefore, tumor analyses helped to establish that the germline NF1 and BRCA1 variants were in cis on the paternal chromosome. This last information is important to provide adequate genetic counselling regarding the risk of recurrence in the offspring, as well as opportunity for early intervention. In conclusion, we present the first case of a malignant phyllodes tumor of the breast in patient carrying pathogenic variants in NF1 and BRCA1. Further studies will be necessary to understand if the phyllodes histotype represents a very rare component of NF1-associated breast cancer. [ABSTRACT FROM AUTHOR]

Published
2021
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11. Male breast cancer in BRCA1 and BRCA2 mutation carriers: pathology data from the Consortium of Investigators of Modifiers of BRCA1/2

Author

Silvestri, Barrowdale, V., DMulligan A. M., C, dEmail, Author, Neuhausen, eEmail Author, S. L., Fox, fEmail Author, S., Karlan, gEmail Author, B. Y., Mitchell G., H, iEmail, Author, James P., H, Thull, jEmail Author, D. L., Zorn, jEmail Author, K. K., Carter, kEmail Author, N. J., Nathanson, lEmail Author, K. L., Domchek, lEmail Author, S. M., Rebbeck, mEmail Author, T. R., Ramus, nEmail Author, S. J., Nussbaum, oEmail Author, R. L., Olopade, pEmail Author, O. I., Rantala, qEmail Author, J., Yoon, S. -Y., R, sEmail, Author, Caligo, tEmail Author, M. A., Spugnesi, tEmail Author, L., Bojesen, uEmail Author, A., Pedersen, vEmail Author, I. S., Thomassen, wEmail Author, M., Jensen, xEmail Author, U. B., Toland, yEmail Author, A. E., Senter, zEmail Author, L., Andrulis I. L., D, abEmail, Author, Glendon, aaEmail Author, G., Hulick, acEmail Author, P. J., Imyanitov, adEmail Author, E. N., Greene, aeEmail Author, M. H., Mai, aeEmail Author, P. L., Singer, afEmail Author, C. F., Rappaport-Fuerhauser, afEmail Author, C., Kramer, agEmail Author, G., Vijai, ahEmail Author, J., Offit, ahEmail Author, K., Robson, aiEmail Author, M., Lincoln, ahEmail Author, A., Jacobs, ahEmail Author, L., Machackova, ajEmail Author, E., Foretova, akEmail Author, L., Navratilova, ajEmail Author, M., Vasickova, ajEmail Author, P., Couch, F. J., Al, amEmail, Author, Hallberg, amEmail Author, E., Ruddy, anEmail Author, K. J., Sharma, aoEmail Author, P., Kim, apEmail Author, S. -W., Teixeira, M. R., Aq, arEmail, Author, Pinto, aqEmail Author, P., Montagna, asEmail Author, M., Matricardi, asEmail Author, L., Arason, atEmail Author, A., Johannsson, auEmail Author, O. T., Barkardottir, atEmail Author, R. B., Jakubowska, avEmail Author, A., Lubinski, avEmail Author, J., Izquierdo, awEmail Author, A., Pujana, axEmail Author, M. A., Balmaña, ayEmail Author, J., Diez, azEmail Author, O., Ivady, baEmail Author, G., Papp, bbEmail Author, J., Olah, bbEmail Author, E., Kwong, Bc, A., bdEmail, Author, Nevanlinna, beEmail Author, H., Aittomäki, bfEmail Author, K., Perez, Segura, bgEmail Author, P., Caldes, bhEmail Author, T., Van, Maerken, biEmail Author, T., Poppe, biEmail Author, B., Claes, biEmail Author, K. B. M., Isaacs, bjEmail Author, C., Elan, bkEmail Author, C., Lasset, Bl, C., bmEmail, Author, Stoppa-Lyonnet, Bk, D., bnEmail, Author, Barjhoux, boEmail Author, L., Belotti, bkEmail Author, M., Meindl, bpEmail Author, A., Gehrig, bqEmail Author, A., Sutter, brEmail Author, C., Engel, bsEmail Author, C., Niederacher, btEmail Author, D., Steinemann, buEmail Author, D., Hahnen, bvEmail Author, E., Kast, bwEmail Author, K., Arnold, bxEmail Author, N., Varon-Mateeva, byEmail Author, R., Wand, bzEmail Author, D., Godwin, caEmail Author, A. K., Evans, cbEmail Author, D. G., Frost, bEmail Author, D., Perkins, bEmail Author, J., Adlard, ccEmail Author, J., Izatt, cdEmail Author, L., Platte, ceEmail Author, R., Eeles, cfEmail Author, R., Ellis, bEmail Author, S., Hamann, cfEmail Author, U., Garber, cgEmail Author, J., Fostira, chEmail Author, F., Fountzilas, ciEmail Author, G., Pasini, Cj, B., ckEmail, Author, Giannini, aEmail Author, G., Rizzolo, aEmail Author, P., Russo, clEmail Author, A., Cortesi, cmEmail Author, L., Papi, Laura, cnEmail Author, L., Varesco, coEmail Author, L., Palli, cpEmail Author, D., Zanna, cpEmail Author, I., Savarese, cqEmail Author, A., Radice, crEmail Author, P., Manoukian, csEmail Author, S., Peissel, csEmail Author, B., Barile, ctEmail Author, M., Bonanni, ctEmail Author, B., Viel, cuEmail Author, A., Pensotti, Cv, V., cwEmail, Author, Tommasi, cxEmail Author, S., Peterlongo, cvEmail Author, P., Weitzel, cyEmail Author, J. N., Osorio, Cz, A., daEmail, Author, Benitez, Da, J., dcEmail, Author, McGuffog, bEmail Author, L., Healey, ddEmail Author, S., Gerdes, deEmail Author, A. -M., Ejlertsen, dfEmail Author, B., Hansen, dgEmail Author, T. V. O., Steele, eEmail Author, L., Ding, eEmail Author, Y. C., Tung, dhEmail Author, N., Janavicius, diEmail Author, R., Goldgar, djEmail Author, D. E., Buys, dkEmail Author, S. S., Daly, dlEmail Author, M. B., Bane, dmEmail Author, A., Terry, dnEmail Author, M. B., John, doEmail Author, E. M., Southey, dpEmail Author, M., Easton, bEmail Author, D. F., Chenevix-Trench, ddEmail Author, G., Antoniou, bEmail Author, A. C., Ottini, Papi, L, Pathology, Department of Obstetrics and Gynecology, Clinicum, Medicum, Department of Medical and Clinical Genetics, Silvestri, Valentina, Barrowdale, Daniel, Mulligan, Anna Marie, Neuhausen, Susan L., Fox, Stephen, Karlan, Beth Y., Mitchell, Gillian, James, Paul, Thull, Darcy L., Zorn, Kristin K., Carter, Natalie J., Nathanson, Katherine L., Domchek, Susan M., Rebbeck, Timothy R., Ramus, Susan J., Nussbaum, Robert L., Olopade, Olufunmilayo I., Rantala, Johanna, Yoon, Sook-Yee, Caligo, Maria A., Spugnesi, Laura, Bojesen, Ander, Pedersen, Inge Sokilde, Thomassen, Mad, Jensen, Uffe Birk, Toland, Amanda Ewart, Senter, Leigha, Andrulis, Irene L., Glendon, Gord, Hulick, Peter J., Imyanitov, Evgeny N., Greene, Mark H., Mai, Phuong L., Singer, Christian F., Rappaport-Fuerhauser, Christine, Kramer, Gero, Vijai, Joseph, Offit, Kenneth, Robson, Mark, Lincoln, Anne, Jacobs, Lauren, Machackova, Eva, Foretova, Lenka, Navratilova, Marie, Vasickova, Petra, Couch, Fergus J., Hallberg, Emily, Ruddy, Kathryn J., Sharma, Priyanka, Kim, Sung-Won, Teixeira, Manuel R., Pinto, Pedro, Montagna, Marco, Matricardi, Laura, Arason, Adalgeir, Johannsson, Oskar Th, Barkardottir, Rosa B., Jakubowska, Anna, Lubinski, Jan, Izquierdo, Angel, Pujana, Miguel Angel, Balmaña, Judith, Diez, Orland, Ivady, Gabriella, Papp, Jano, Olah, Edith, Kwong, Ava, Nevanlinna, Heli, Aittomäki, Kristiina, Perez Segura, Pedro, Caldes, Trinidad, Van Maerken, Tom, Poppe, Bruce, Claes, Kathleen B.M., Isaacs, Claudine, Elan, Camille, Lasset, Christine, Stoppa-Lyonnet, Dominique, Barjhoux, Laure, Belotti, Muriel, Meindl, Alfon, Gehrig, Andrea, Sutter, Christian, Engel, Christoph, Niederacher, Dieter, Steinemann, Dori, Hahnen, Eric, Kast, Karin, Arnold, Norbert, Varon-Mateeva, Raymonda, Wand, Dorothea, Godwin, Andrew K., Evans, D.Gareth, Frost, Debra, Perkins, Jo, Adlard, Julian, Izatt, Louise, Platte, Radka, Eeles, Ro, Ellis, Steve, Hamann, Ute, Garber, Judy, Fostira, Florentia, Fountzilas, George, Pasini, Barbara, Giannini, Giuseppe, Rizzolo, Piera, Russo, Antonio, Cortesi, Laura, Papi, Laura, Varesco, Liliana, Palli, Domenico, Zanna, Ine, Savarese, Antonella, Radice, Paolo, Manoukian, Siranoush, Peissel, Bernard, Barile, Monica, Bonanni, Bernardo, Viel, Alessandra, Pensotti, Valeria, Tommasi, Stefania, Peterlongo, Paolo, Weitzel, Jeffrey N., Osorio, Ana, Benitez, Javier, McGuffog, Lesley, Healey, Sue, Gerdes, Anne-Marie, Ejlertsen, Bent, Hansen, Thomas V.O., Steele, Linda, Ding, Yuan Chun, Tung, Nadine, Janavicius, Ramuna, Goldgar, David E., Buys, Saundra S., Daly, Mary B., Bane, Anita, Terry, Mary Beth, John, Esther M., Southey, Melissa, Easton, Douglas F., Chenevix-Trench, Georgia, Antoniou, Antonis C., and Ottini, Laura

Subjects
Male, 0301 basic medicine, Genotype-phenotype correlation, Pathology, genotype-phenotype correlations, endocrine system diseases, Settore MED/06 - Oncologia Medica, FEATURES, male breast cancer, Genotype-phenotype correlations, Logistic regression, Histologic grade, 610 Medical sciences Medicine, Breast cancer, 0302 clinical medicine, Epidemiology, Medicine and Health Sciences, polycyclic compounds, skin and connective tissue diseases, POPULATION, RISK, education.field_of_study, BRCA1 Protein, Men, Single Nucleotide, Middle Aged, 3. Good health, GRADE, 030220 oncology & carcinogenesis, Male breast cancer, oncology, Female, Breast Neoplasm, Research Article, Human, Adult, medicine.medical_specialty, CARCINOMA, Genotype–phenotype correlations, 3122 Cancers, Population, Breast Neoplasms, BRCA1/2, histologic grade, pathology, cancer research, Male breast cancer, BRCA1, BRCA2, Polymorphism, Single Nucleotide, Càncer de mama, Breast Neoplasms, Male, 03 medical and health sciences, SDG 3 - Good Health and Well-being, Journal Article, Carcinoma, medicine, Humans, Genetic Predisposition to Disease, Polymorphism, education, Aged, Neoplasm Staging, BRCA2 Protein, business.industry, Odds ratio, medicine.disease, Confidence interval, 030104 developmental biology, ddc:161, Homes, Mutation, Oncology, Cancer Research, business
Abstract

Background BRCA1 and, more commonly, BRCA2 mutations are associated with increased risk of male breast cancer (MBC). However, only a paucity of data exists on the pathology of breast cancers (BCs) in men with BRCA1/2 mutations. Using the largest available dataset, we determined whether MBCs arising in BRCA1/2 mutation carriers display specific pathologic features and whether these features differ from those of BRCA1/2 female BCs (FBCs). Methods We characterised the pathologic features of 419 BRCA1/2 MBCs and, using logistic regression analysis, contrasted those with data from 9675 BRCA1/2 FBCs and with population-based data from 6351 MBCs in the Surveillance, Epidemiology, and End Results (SEER) database. Results Among BRCA2 MBCs, grade significantly decreased with increasing age at diagnosis (P = 0.005). Compared with BRCA2 FBCs, BRCA2 MBCs were of significantly higher stage (P for trend = 2 × 10−5) and higher grade (P for trend = 0.005) and were more likely to be oestrogen receptor–positive [odds ratio (OR) 10.59; 95 % confidence interval (CI) 5.15–21.80] and progesterone receptor–positive (OR 5.04; 95 % CI 3.17–8.04). With the exception of grade, similar patterns of associations emerged when we compared BRCA1 MBCs and FBCs. BRCA2 MBCs also presented with higher grade than MBCs from the SEER database (P for trend = 4 × 10−12). Conclusions On the basis of the largest series analysed to date, our results show that BRCA1/2 MBCs display distinct pathologic characteristics compared with BRCA1/2 FBCs, and we identified a specific BRCA2-associated MBC phenotype characterised by a variable suggesting greater biological aggressiveness (i.e., high histologic grade). These findings could lead to the development of gender-specific risk prediction models and guide clinical strategies appropriate for MBC management. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0671-y) contains supplementary material, which is available to authorized users.

Published
2016

12. Identification of ten variants associated with risk of estrogen-receptor-negative breast cancer

Author

Milne, Roger L., Kuchenbaecker, Karoline B., Michailidou, Kyriaki, Beesley, Jonathan, Kar, Siddhartha, Lindstrom, Sara, Hui, Shirley, Lemaçon, Audrey, Soucy, Penny, Dennis, Joe, Jiang, Xia, Rostamianfar, Asha, Finucane, Hilary, Bolla, Manjeet K., McGuffog, Lesley, Wang, Qin, Aalfs, Cora M., Abctctb, Investigators, Adams, Marcia, Adlard, Julian, Agata, Simona, Ahmed, Shahana, Ahsan, Habibul, Aittom, Kristiina Äki, Fares, Al Ejeh, Allen, Jamie, Ambrosone, Christine B., Amos, Christopher I., Andrulis, Irene L., Anton-Culver, Hoda, Antonenkova, Natalia N., Arndt, Volker, Arnold, Norbert, Aronson, Kristan J., Auber, Bernd, Auer, Paul L., Ausems, Margreet G.M., Azzollini, Jacopo, François, Bacot, Balma, Judith Nã, Barile, Monica, Barjhoux, Laure, Barkardottir, Rosa B., Barrdahl, Myrto, Barnes, Daniel, Barrowdale, Daniel, Baynes, Caroline, Beckmann, Matthias W., Benitez, Javier, Bermisheva, Marina, Bernstein, Leslie, Bignon, Yves Jean, Blazer, Kathleen R., Blok, Marinus J., Blomqvist, Carl, Blot, William, Bobolis, Kristie, Boeckx, Bram, Bogdanova, Natalia V., Bojesen, Anders, Bojesen, Stig E., Bonanni, Bernardo, Anne-Lise, Børresen Dale, Bozsik, Aniko, Bradbury, Angela R., Brand, Judith S., Brauch, Hiltrud, Brenner, Hermann, Brigitte, Bressac De Paillerets, Brewer, Carole, Brinton, Louise, Broberg, Per, Angela, Brooks Wilson, Brunet, Joan, Brüning, Thomas, Burwinkel, Barbara, Buys, Saundra S., Byun, Jinyoung, Cai, Qiuyin, Cald, Trinidad És, Caligo, Maria A., Campbell, Ian, Canzian, Federico, Caron, Olivier, Carracedo, Angel, Carter, Brian D., Esteban, Castelao, Castera, Laurent, Virginie, Caux Moncoutier, Chan, Salina B., Jenny, Chang Claude, Chanock, Stephen J., Chen, Xiaoqing, Cheng, Ting Yuan David, Chiquette, Jocelyne, Christiansen, Hans, Claes, Kathleen B., Clarke, Christine L., Conner, Thomas, Conroy, Don M., Cook, Jackie, Cordina-Duverger, Emilie, Cornelissen, Sten, Coupier, Isabelle, Cox, Angela, Cox, David G., Cross, Simon S., Cuk, Katarina, Cunningham, J. M., Czene, Kamila, Daly, Mary B., Damiola, Francesca, Darabi, Hatef, Davidson, Rosemarie, Leeneer, Kim De L., Devilee, Peter, Dicks, Ed, Diez, Orland, Ding, Yuan Chun, Ditsch, Nina, Doheny, Kimberly F., Domchek, Susan M., Dorfling, Cecilia M., Dörk, Thilo, Dos-Santos-Silva, Isabel, Dubois, Stéphane, Dugué, Pierre Antoine, Dumont, Martine, Dunning, Alison M., Durcan, Lorraine, Dwek, Miriam, Dworniczak, Bernd, Eccles, Diana, Eeles, Ros, Ehrencrona, Hans, Eilber, Ursula, Ejlertsen, Bent, Ekici, Arif B., Eliassen, A. Heather, Engel, Christoph, Eriksson, Mikael, Fachal, Laura, Faivre, Laurence, Fasching, Peter A., Faust, Ulrike, Figueroa, Jonine, Flesch-Janys, Dieter, Fletcher, Olivia, Flyger, Henrik, Foulkes, William D., Friedman, Eitan, Fritschi, Lin, Frost, Debra, Gabrielson, Marike, Gaddam, Pragna, Gammon, Marilie D., Ganz, Patricia A., Gapstur, Susan M., Garber, Judy, Garcia-Barberan, Vanesa, Garciá-Saénz, José A., Gaudet, Mia M., Gauthier-Villars, Marion, Gehrig, Andrea, Georgoulias, Vassilios, Gerdes, Anne Marie, Giles, Graham G., Glendon, Gord, Godwin, Andrew K., Goldberg, Mark S., Goldgar, David E., González-Neira, Anna, Goodfellow, Paul, Greene, Mark H., Grenaker, Grethe Alnæs I., Grip, Mervi, Gronwald, Jacek, Grundy, Anne, Gschwantler, Daphne Kaulich, Guénel, Pascal, Guo, Qi, Haeberle, Lothar, Hahnen, Eric, Haiman, Christopher A., Håkansson, Niclas, Hallberg, Emily, Hamann, Ute, Hamel, Nathalie, Hankinson, Susan, Hansen, Thomas V., Harrington, Patricia, Hart, Steven N., Hartikainen, Jaana M., Healey, Catherine S., Hein, Alexander, Helbig, Sonja, Henderson, Alex, Heyworth, Jane, Hicks, Belynda, Hillemanns, Peter, Hodgson, Shirley, Hogervorst, Frans B., Hollestelle, Antoinette, Hooning, Maartje J., Hoover, Bob, Hopper, John L., Hu, Chunling, Huang, Guanmengqian, Hulick, Peter J., Humphreys, Keith, Hunter, David J., Imyanitov, Evgeny N., Isaacs, Claudine, Iwasaki, Motoki, Izatt, Louise, Jakubowska, Anna, James, Paul, Janavicius, Ramunas, Janni, Wolfgang, Jensen, Uffe Birk, John, Esther M., Johnson, Nichola, Jones, Kristine, Jones, Michael, Jukkola-Vuorinen, Arja, Kaaks, Rudolf, Kabisch, Maria, Kaczmarek, Katarzyna, Kang, Daehee, Kast, Karin, Keeman, Renske, Kerin, Michael J., Kets, Carolien M., Keupers, Mac Hteld, Khan, Sofia, Khusnutdinova, Elza, Kiiski, Johanna I., Kim, Sung Won, Knight, Julia A., Konstantopoulou, Irene, Kosma, Veli Matti, Kristensen, Vessela N., Kruse, Torben A., Kwong, Ava, Lænkholm, Anne Vibeke, Laitman, Yael, Lalloo, Fiona, Lambrechts, Diether, Landsman, Keren, Lasset, Christine, Lazaro, Conxi, Marchand, Loic Le, Lindström, Sara, Al-Ejeh, Fares, Margreet, G. M.Ausems, Bacot, François, Børresen-Dale, Anne Lise, Bressac-De, Brigitte Paillerets, Brooks-Wilson, Angela, Castelao, J. Esteban, Caux-Moncoutier, Virginie, Chang-Claude, Jenny, McLaes, Kathleen B., Leeneer, Kim De, Dieter, Flesch Janys, Gschwantler-Kaulich, Daphne, Keupers, MacHteld, Lecarpentier, Julie, Lee, Andrew, Lee, Eunjung, Won, Jong Lee, Lee, Min Hyuk, Lejbkowicz, Flavio, Lesueur, Fabienne, Li, Jingmei, Lilyquist, Jenna, Lincoln, Anne, Lindblom, Annika, Lissowska, Jolanta, Lo, Wing Yee, Loibl, Sibylle, Long, Jirong, Loud, Jennifer T., Lubinski, Jan, Luccarini, Craig, Lush, Michael, MacInnis, Robert J., Maishman, Tom, Makalic, Enes, Kostovska, Ivana Maleva, Malone, Kathleen E., Siranoush, Manoukian, Manson, Joann E., Margolin, Sara, Martens, John W., Martinez, Maria Elena, Matsuo, Keitaro, Mavroudis, Dimitrios, Mazoyer, Sylvie, McLean, Catriona, Meijers-Heijboer, Hanne, Menéndez, Primitiva, Meyer, Jeffery, Miao, Hui, Miller, Austin, Miller, Nicola, Mitchell, Gillian, Montagna, Marco, Muir, Kenneth, Mulligan, Anna Marie, Mulot, Claire, Nadesan, Sue, Nathanson, Katherine L., Neuhausen, Susan L., Nevanlinna, Heli, Nevelsteen, Ines, Niederacher, Dieter, Nielsen, Sune F., Nordestgaard, Børge G., Norman, Aaron, Nussbaum, Robert L., Olah, Edith, Olopade, Olufunmilayo I., Olson, Janet E., Olswold, Curtis, Ong, Kai Ren, Oosterwijk, Jan C., Orr, Nick, Osorio, Ana, Pankratz, V. Shane, Papi, Laura, Park-Simon, Tjoung Won, Paulsson-Karlsson, Ylva, Lloyd, Rachel, Pedersen, Inge Søkilde, Peissel, Bernard, Peixoto, Ana, Perez, Jose I., Peterlongo, Paolo, Peto, Julian, Pfeiler, Georg, Phelan, Catherine M., Pinchev, Mila, Plaseska-Karanfilska, Dijana, Poppe, Bruce, Porteous, Mary E., Prentice, Ross, Presneau, Nadege, Prokofieva, Darya, Pugh, Elizabeth, Pujana, Miquel Angel, Pylkäs, Katri, Rack, Brigitte, Radice, Paolo, Rahman, Nazneen, Rantala, Johanna, Rappaport-Fuerhauser, Christine, Rennert, Gad, Rennert, Hedy S., Rhenius, Valerie, Rhiem, Kerstin, Richardson, Andrea, Rodriguez, Gustavo C., Romero, Atocha, Romm, Jane, Rookus, Matti A., Rudolph, Anja, Ruediger, Thomas, Saloustros, Emmanouil, Sanders, Joyce, Sandler, Dale P., Sangrajrang, Suleeporn, Sawyer, Elinor J., Schmidt, Daniel F., Schoemaker, Minouk J., Schumacher, Fredrick, Schürmann, Peter, Schwentner, Lukas, Scott, Christopher, Scott, Rodney J., Seal, Sheila, Senter, Leigha, Seynaeve, Caroline, Shah, Mitul, Sharma, Priyanka, Shen, Chen Yang, Sheng, Xin, Shimelis, Hermela, Shrubsole, Martha J., Shu, Xiao Ou, Side, Lucy E., Singer, Christian F., Sohn, Christof, Southey, Melissa C., Spinelli, John J., Spurdle, Amanda B., Stegmaier, Christa, Stoppa-Lyonnet, Dominique, Sukiennicki, Grzegorz, Surowy, Harald, Sutter, Christian, Swerdlow, Anthony, Szabo, Csilla I., Tamimi, Rulla M., Tan, Yen Y., Taylor, Jack A., Tejada, Maria Isabel, Tengström, Maria, Teo, Soo H., Terry, Mary B., Tessier, Daniel C., Teul, Alex E., Thöne, Kathrin, Thull, Darcy L., Tibiletti, Maria Grazia, Tihomirova, Laima, Tischkowitz, Marc, Toland, Amanda E., Tollenaar, Rob A.M., Tomlinson, Ian, Tong, Ling, Torres, Diana, Tranchant, Martine, Truong, Thérèse, Tucker, Kathy, Tung, Nadine, Tyrer, Jonathan, Ulmer, Hans Ulrich, Vachon, Celine, Christi, Van Asperen J., Den Berg, David Van, Ouweland, Ans M.Vanden, Rensburg, Elizabeth J., Varesco, Liliana, Varon-Mateeva, Raymonda, Vega, Ana, Viel, Alessandra, Vijai, Joseph, Vincent, Daniel, Vollenweider, Jason, Walker, Lisa, Wang, Zhaoming, Wang-Gohrke, Shan, Wappenschmidt, Barbara, Weinberg, Clarice R., Weitzel, Jeffrey N., Wendt, Camilla, Wesseling, Jelle, Whittemore, Alice S., Wijnen, Juul T., Willett, Walter, Winqvist, Robert, Wolk, Alicja, Wu, Anna H., Xia, Lucy, Yang, Xiaohong R., Yannoukakos, Drakoulis, Zaffaroni, Daniela, Zheng, Wei, Zhu, Bin, Ziogas, Argyrios, Ziv, Elad, Zorn, Kristin K., Gago-Dominguez, Manuela, Mannermaa, Arto, Olsson, Håkan, Teixeira, Manuel R., Stone, Jennifer, Offit, Kenneth, Ottini, Laura, Park, Sue K., Thomassen, Mads, Hall, Per, Meindl, Alfons, Schmutzler, Rita K., Droit, Arnaud, Bader, Gary D., Pharoah, Paul D., Couch, Fergus J., Easton, Douglas F., Kraft, Peter, Chenevix-Trench, Georgia, Garciá-Closas, Montserrat, Schmidt, Marjanka K., Antoniou, Antonis C., Simard, Jacques, Damage and Repair in Cancer Development and Cancer Treatment (DARE), Targeted Gynaecologic Oncology (TARGON), Human Genetics, CCA - Cancer biology and immunology, Epidemiology and Data Science, Amsterdam Neuroscience - Complex Trait Genetics, Human genetics, Amsterdam Reproduction & Development (AR&D), Clinical Genetics, Medical Oncology, Internal Medicine, Obstetrics & Gynecology, MUMC+: DA KG Lab Centraal Lab (9), and RS: GROW - R4 - Reproductive and Perinatal Medicine

Subjects
0301 basic medicine, Oncology, Estrogen receptor, Genome-wide association study, consortium, Gene mutation, DISEASE, Breast cancer, Risk Factors, Receptors, common variants, BRCA2 MUTATION CARRIERS, Medicine and Health Sciences, CONFER SUSCEPTIBILITY, skin and connective tissue diseases, ovarian cancers, BRCA1 Protein, COMMON VARIANTS, Single Nucleotide, OVARIAN CANCERS, 3. Good health, Women's cancers Radboud Institute for Health Sciences [Radboudumc 17], Receptors, Estrogen, functional variants, Female, estrogen receptor, SNPs, EXPRESSION, medicine.medical_specialty, Heterozygote, SUSCEPTIBILITY LOCI, European Continental Ancestry Group, Breast cancer, estrogen receptor, SNPs, Single-nucleotide polymorphism, Breast Neoplasms, Biology, Polymorphism, Single Nucleotide, White People, Article, Càncer de mama, 03 medical and health sciences, SDG 3 - Good Health and Well-being, Internal medicine, expression, medicine, Genetic predisposition, Genetics, Journal Article, Humans, Genetic Predisposition to Disease, ddc:610, Risk factor, Polymorphism, GENOME-WIDE ASSOCIATION, FUNCTIONAL VARIANTS, disease, CONSORTIUM, Case-control study, Biology and Life Sciences, medicine.disease, confer susceptibility, Estrogen, susceptibility loci, 030104 developmental biology, Mutation, genome-wide association, brca2 mutation carriers, Genome-Wide Association Study
Abstract

Most common breast cancer susceptibility variants have been identified through genome-wide association studies (GWAS) of predominantly estrogen receptor (ER)-positive disease1. We conducted a GWAS using 21,468 ER-negative cases and 100,594 controls combined with 18,908 BRCA1 mutation carriers (9,414 with breast cancer), all of European origin. We identified independent associations at P < 5 × 10−8 with ten variants at nine new loci. At P < 0.05, we replicated associations with 10 of 11 variants previously reported in ER-negative disease or BRCA1mutation carrier GWAS and observed consistent associations with ER-negative disease for 105 susceptibility variants identified by other studies. These 125 variants explain approximately 16% of the familial risk of this breast cancer subtype. There was high genetic correlation (0.72) between risk of ER-negative breast cancer and breast cancer risk for BRCA1 mutation carriers. These findings may lead to improved risk prediction and inform further fine-mapping and functional work to better understand the biological basis of ER-negative breast cancer.

Published
2017

13. Common breast cancer susceptibility alleles are associated with tumour subtypes in BRCA1 and BRCA2 mutation carriers: results from the Consortium of Investigators of Modifiers of BRCA1/2

Author

Mulligan, Anna Marie, Couch, Fergus J, Barrowdale, Daniel, Domchek, Susan M, Eccles, Diana, Nevanlinna, Heli, Ramus, Susan J, Robson, Mark, Sherman, Mark, Spurdle, Amanda B, Wappenschmidt, Barbara, Lee, Andrew, McGuffog, Lesley, Healey, Sue, Sinilnikova, Olga M, Janavicius, Ramunas, Hansen, Thomas vO, Nielsen, Finn C, Ejlertsen, Bent, Osorio, Ana, Muñoz-Repeto, Iván, Durán, Mercedes, Godino, Javier, Pertesi, Maroulio, Benítez, Javier, Peterlongo, Paolo, Manoukian, Siranoush, Peissel, Bernard, Zaffaroni, Daniela, Cattaneo, Elisa, Bonanni, Bernardo, Viel, Alessandra, Pasini, Barbara, Papi, Laura, Ottini, Laura, Savarese, Antonella, Bernard, Loris, Radice, Paolo, Hamann, Ute, Verheus, Martijn, Meijers-Heijboer, Hanne EJ, Wijnen, Juul, Gómez García, Encarna B, Nelen, Marcel R, Kets, C Marleen, Seynaeve, Caroline, Tilanus-Linthorst, Madeleine MA, van der Luijt, Rob B, van Os, Theo, Rookus, Matti, Frost, Debra, Jones, J Louise, Evans, D Gareth, Lalloo, Fiona, Eeles, Ros, Izatt, Louise, Adlard, Julian, Davidson, Rosemarie, Cook, Jackie, Donaldson, Alan, Dorkins, Huw, Gregory, Helen, Eason, Jacqueline, Houghton, Catherine, Barwell, Julian, Side, Lucy E, McCann, Emma, Murray, Alex, Peock, Susan, Godwin, Andrew K, Schmutzler, Rita K, Rhiem, Kerstin, Engel, Christoph, Meindl, Alfons, Ruehl, Ina, Arnold, Norbert, Niederacher, Dieter, Sutter, Christian, Deissler, Helmut, Gadzicki, Dorothea, Kast, Karin, Preisler-Adams, Sabine, Varon-Mateeva, Raymonda, Schoenbuchner, Ines, Fiebig, Britta, Heinritz, Wolfram, Schäfer, Dieter, Gevensleben, Heidrun, Caux-Moncoutier, Virginie, Fassy-Colcombet, Marion, Cornelis, François, Mazoyer, Sylvie, Léoné, Mélanie, Boutry-Kryza, Nadia, Hardouin, Agnès, Berthet, Pascaline, Muller, Danièle, Fricker, Jean-Pierre, Mortemousque, Isabelle, Pujol, Pascal, Coupier, Isabelle, Lebrun, Marine, Kientz, Caroline, Longy, Michel, Sevenet, Nicolas, Stoppa-Lyonnet, Dominique, Isaacs, Claudine, Caldes, Trinidad, de la Hoya, Miguel, Heikkinen, Tuomas, Aittomäki, Kristiina, Blanco, Ignacio, Lazaro, Conxi, Barkardottir, Rosa B, Soucy, Penny, Dumont, Martine, Simard, Jacques, Montagna, Marco, Tognazzo, Silvia, D'Andrea, Emma, Fox, Stephen, Yan, Max, Rebbeck, Tim, Olopade, Olufunmilayo, Weitzel, Jeffrey N, Lynch, Henry T, Ganz, Patricia A, Tomlinson, Gail E, Wang, Xianshu, Fredericksen, Zachary, Pankratz, Vernon S, Lindor, Noralane M, Szabo, Csilla, Offit, Kenneth, Sakr, Rita, Gaudet, Mia, Bhatia, Jasmine, Kauff, Noah, Singer, Christian F, Tea, Muy-Kheng, Gschwantler-Kaulich, Daphne, Fink-Retter, Anneliese, Mai, Phuong L, Greene, Mark H, Imyanitov, Evgeny, O'Malley, Frances P, Ozcelik, Hilmi, Glendon, Gordon, Toland, Amanda E, Gerdes, Anne-Marie, Thomassen, Mads, Kruse, Torben A, Jensen, Uffe Birk, Skytte, Anne-Bine, Caligo, Maria A, Soller, Maria, Henriksson, Karin, Wachenfeldt, von Anna, Arver, Brita, Stenmark-Askmalm, Marie, Karlsson, Per, Ding, Yuan Chun, Neuhausen, Susan L, Beattie, Mary, Pharoah, Paul DP, Moysich, Kirsten B, Nathanson, Katherine L, Karlan, Beth Y, Gross, Jenny, John, Esther M, Daly, Mary B, Buys, Saundra M, Southey, Melissa C, Hopper, John L, Terry, Mary Beth, Chung, Wendy, Miron, Alexander F, Goldgar, David, Chenevix-Trench, Georgia, Easton, Douglas F, Andrulis, Irene L, Antoniou, Antonis C, Breast Cancer Family Registry, EMBRACE, GEMO Study Collaborators, HEBON, kConFab Investigators, Ontario Cancer Genetics Network, SWE-BRCA, CIMBA, Pediatric Surgery, Neurology, Medical Oncology, Surgery, Clinical Genetics, Department of Laboratory Medicine, St Michael's Hospital-Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], Department of Laboratory Medicine and Pathobiology, University of Toronto, Department of Laboratory Medicine and Pathology, Mayo Clinic, Centre for Cancer Genetic Epidemiology, University of Cambridge [UK] (CAM), Department of Medicine, University of Pennsylvania [Philadelphia]-Abramson Cancer Center, Faculty of Medicine, University of Southampton-University Hospital Southampton, Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Department of Preventive Medicine, University of Southern California (USC)-Keck School of Medicine [Los Angeles], University of Southern California (USC), Memorial Sloane Kettering Cancer Center [New York]-Weill Medical College of Cornell University [New York], Division of Cancer Epidemiology and Genetics, National Cancer Institute [Bethesda] (NCI-NIH), National Institutes of Health [Bethesda] (NIH)-National Institutes of Health [Bethesda] (NIH), Queensland Institute of Medical Research, Department of Gynaecology and Obstetrics, University Hospital of Cologne [Cologne]-Centre of Familial Breast and Ovarian Cancer-Centre for Integrated Oncology (CIO), Unité Mixte de Génétique Constitutionnelle des Cancers Fréquents, Centre Léon Bérard [Lyon]-Hospices Civils de Lyon (HCL), Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Department of Molecular and Regenerative Medicine, Hematology, Oncology and Transfusion Medicine Center, Vilnius University Hospital Santariskiu Clinics, State Research Institute Innovative Medicine Center, Center for Genomic Medicine, Copenhagen University Hospital-Rigshospitalet [Copenhagen], Copenhagen University Hospital, Department of Oncology, Human Genetics Group, Spanish National Cancer Research Centre-Spain and the Spanish Network on Rare Diseases, Institute of Biology and Molecular Genetics, Universidad de Valladolid (IBGM-UVA), Instituto de investigación sanitaria de Aragón (IIS), Hospital clinico Universitario 'Lozano Blesa', Molecular Diagnostics Laboratory, National Center for Scientific Research 'Demokritos' (NCSR)-IRRP, Unit of Molecular Bases of Genetic Risk and Genetic Testing, Fondazione IRCCS Istituto Nazionale Tumouri (INT), Fondazione Istituto FIRC di Oncologia Molecolare, IFOM, Istituto FIRC di Oncologia Molecolare (IFOM), Unit of Medical Genetics, Division of Cancer Prevention and Genetics, Istituto Europeo di Oncologia, Unit of Experimental Oncology 1, Centro di Riferimento Oncologico, Department of Genetics, Biology and Biochemistry, University of Turin, Medical Genetics Unit, Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Department of Molecular Medicine, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Division of Medical Oncology, Regina Elena Cancer Institute, Department of Experimental Oncology, Consortium for Genomics Technology (Cogentech)-Istituto Europeo di Oncologia. Milan, Molecular Genetics of Breast Cancer, German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Department of Epidemiology, Netherlands Cancer Institute, Department of Clinical Genetics, VU Medical Center, Department of Human Genetics and Department of Clinical Genetics, Leiden University Medical Center (LUMC), Department of Clinical Genetics and GROW, School for Oncology and Developmental Biology, Department of Human Genetics, Radboud University Medical Center [Nijmegen], Department of Medical Oncology, Erasmus University Medical Center [Rotterdam] (Erasmus MC)-Family Cancer Clinic, Department of Surgical Oncology, Department of Clinical Molecular Genetics, University Medical Center [Utrecht], Academic Medical Center - Academisch Medisch Centrum [Amsterdam] (AMC), University of Amsterdam [Amsterdam] (UvA)-University of Amsterdam [Amsterdam] (UvA), Barts Cancer Institute, Queen Mary University of London (QMUL), Genetic Medicine, Manchester Academic Health Sciences Centre-Central Manchester University Hospitals, Oncogenetics Team, The Institute of Cancer Research and Royal Marsden, Guy's and St. Thomas' NHS Foundation Trust, Yorkshire Regional Genetics Service, Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Sheffield Clinical Genetics Service, Sheffield Children's NHS Foundation Trust, Clinical Genetics Department, St Michael's Hospital, North West Thames Regional Genetics Service, Kennedy-Galton Centre, North of Scotland Regional Genetics Service, University of Aberdeen-NHS Grampian, Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Cheshire and Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Leicestershire Clinical Genetics Service, University Hospitals Leicester, North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children [London] (GOSH), All Wales Medical Genetics Services, Singleton Hospital, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center [Lawrence], Institute for Medical Informatics, Statistics and Epidemiology [Leipzig] (IMISE), Universität Leipzig [Leipzig], Klinikum Rechts der Isar, Ludwig-Maximillians University, University Hospital of Schleswig-Holstein (UKSH), University Hospital Düsseldorf, Institute of Human Genetics, Heidelberg University Hospital [Heidelberg], Universitätsklinikum Ulm - University Hospital of Ulm, Institute of Cell and Molecular Pathology, Hannover Medical School [Hannover] (MHH), University Hospital Carl Gustav Carus, Westfälische Wilhelms-Universität Münster (WWU), Campus Virchov Klinikum, Department of Medical Genetic, Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU)-Institute of Human Genetics-Centre of Familial Breast and Ovarian Cancer, Universität Regensburg (UR), University Hospital, Frankfurt, Breakthrough Breast Cancer Research Centre, Institute of cancer research, Service de Génétique Oncologique, Institut Curie [Paris], Service de génétique [Avicenne], Université Paris 13 (UP13)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Avicenne [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Sud Francilien, CH Evry-Corbeil, CHU Clermont-Ferrand, Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), Unité d'oncogénétique, CRLCC Paul Strauss, Service de génétique [Tours], Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Service de génétique médicale [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve, Service de Génétique Clinique Chromosomique et Moléculaire, CHU Saint-Etienne, Validation et identification de nouvelles cibles en oncologie (VINCO), Institut Bergonié [Bordeaux], UNICANCER-UNICANCER-Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de génétique et biologie des cancers (U830), Université Paris Descartes - Paris 5 (UPD5)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Lombardi Comprehensive Cancer Center, Georgetown University, Molecular Oncology Laboratory, Hospital Clínico San Carlos, Hereditary Cancer Program, Institut Català d'Oncologia-Hospital Duran i Reynals, Department of Pathology, Landspitali University Hospital, University of Iceland [Reykjavik], Cancer Genomics Laboratory, Centre Hospitalier Universitaire de Québec, Research Chair in Oncogenetics, Université Laval [Québec] (ULaval), Immunology and Molecular Oncology Unit, Istituto Oncologico Veneto IOV - IRCCS, Department of Oncology and Surgical Sciences, Universita degli Studi di Padova, Peter MacCallum Cancer Centre, Peter MacCallum Cancer Center, Department of Anatomical Pathology, Prince of Wales Hospital, Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania [Philadelphia]-University of Pennsylvania [Philadelphia], University of Chicago, City of Hope Comprehensive Cancer Center and Department of Population Sciences, Beckman Research Institute, Departments of Medicine, and Preventive Medicine and Public Health, Creighton University, Jonsson Comprehensive Cancer Center, University of California [Los Angeles] (UCLA), University of California-University of California, Department of Internal Medicine, The University of Texas Health Science Center at Houston (UTHealth)-Harold C. Simmons Comprehensive Cancer Center, Department of Pediatrics, The University of Texas Health Science Center at Houston (UTHealth), Department of Medical Genetics, University of Delaware [Newark], Epidemiology Research Program, American Cancer Society, Department of Obstetrics/Gynaecology and Comprehensive Cancer Center, Medizinische Universität Wien = Medical University of Vienna, Laboratory of Molecular Oncology, N.N. Petrov Institute of Oncology, Samuel Lunenfeld Research Institute, Mount Sinai Hospital [Toronto, Canada] (MSH), Prevention & Cancer Control, Cancer Care Ontario, Departments of Molecular VirologyImmunology and Medical Genetics and Internal Medicine, Ohio State University [Columbus] (OSU), University of Copenhagen = Københavns Universitet (KU)-Rigshospital, Odense University Hospital, Aarhus University Hospital, Vejle Hospital, Section of Genetic Oncology, University of Pisa - Università di Pisa, Lund University Hospital, Oncological Centre, Karolinska University Hospital [Stockholm], Department of Clinical and Experimental Medicine, Linköping University (LIU), Sahlgrenska University Hospital [Gothenburg], Department of Population Sciences, Beckman Research Institute of the City of Hope, UCSF Cancer Risk Program and Departments of Medicine and Epidemiology and Biostatistics, University of California [San Francisco] (UCSF), Department of Cancer Prevention and Control, Roswell Park Cancer Institute [Buffalo], Women's Cancer Program, Samuel Oschin Comprehensive Cancer Institute, Cancer Prevention Institute of California, Fox Chase Cancer Center, Department of Oncological Sciences, University of Utah-Huntsman Cancer Institute, Genetic Epidemiology Laboratory, University of Melbourne, Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, Columbia University [New York], Department of Cancer Biology, Dana-Farber Cancer Institute [Boston], Department of Dermatology, University of Utah School of Medicine [Salt Lake City], This work was supported by Cancer Research UK grants C12292/A11174 and C1287/A10118. The research leading to these results has received funding from the European Community's Seventh Framework Programme under grant agreement n° 223175 (HEALTH-F2-2009-223175). ACA is a CR-UK Senior Cancer Research Fellow, DFE is CR-UK Principal Research Fellow., for Breast Cancer Family Registry, for EMBRACE, for Ontario Cancer Genetics Network, for SWE-BRCA, for CIMBA, European Project: 223175,EC:FP7:HEALTH,FP7-HEALTH-2007-B,COGS(2009), BMC, Ed., Collaborative Oncological Gene-environment Study - COGS - - EC:FP7:HEALTH2009-05-01 - 2014-01-31 - 223175 - VALID, University of Pennsylvania-Abramson Cancer Center, Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Torino = University of Turin (UNITO), Università degli Studi di Firenze = University of Florence (UniFI), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Consortium for Genomics Technology (Cogentech)-Istituto Europeo di Oncologia [Milano] (IEO), University of Kansas Medical Center [Kansas City, KS, USA], Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Julius-Maximilians-Universität Würzburg (JMU)-Institute of Human Genetics-Centre of Familial Breast and Ovarian Cancer, Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Georgetown University [Washington] (GU), Università degli Studi di Padova = University of Padua (Unipd), University of Pennsylvania-University of Pennsylvania, University of California (UC)-University of California (UC), Rigshospital-University of Copenhagen = Københavns Universitet (UCPH), Vejle Hospital [Danemark], University of California [San Francisco] (UC San Francisco), Lee, Andrew [0000-0003-0677-0252], Pharoah, Paul [0000-0001-8494-732X], Easton, Douglas [0000-0003-2444-3247], Antoniou, Antonis [0000-0001-9223-3116], Apollo - University of Cambridge Repository, University of Cambridge [UK] ( CAM ), University of Southampton [Southampton]-University Hospital Southampton, University of Southern California ( USC ) -Keck School of Medicine [Los Angeles], Memorial Sloan-Kettering Cancer Center-Weill Medical College of Cornell University [New York], National Cancer Institute ( NIH ), Centre Léon Bérard [Lyon]-Hospices Civils de Lyon ( HCL ), Centre de Recherche en Cancérologie de Lyon ( CRCL ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre Léon Bérard [Lyon]-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Instituto de investigación sanitaria de Aragón ( IIS ), National Center for Scientific Research 'Demokritos' ( NCSR ) -IRRP, IFOM, University of Florence, Università degli Studi di Roma 'La Sapienza' [Rome], Deutsches Krebsforschungszentrum ( DKFZ ), Erasmus University Medical Center-Family Cancer Clinic, University Medical Center Utrecht, Academic Medical Center [Amsterdam] ( AMC ), University of Amsterdam [Amsterdam] ( UvA ) -University of Amsterdam [Amsterdam] ( UvA ), Queen Mary University of London ( QMUL ), Sheffield Children's Hospital, University Hospitals of Leicester, Great Ormond Street Hospital for Children [London] ( GOSH ), University of Kansas Medical Center, Institute for Medical Informatics, Statistics and Epidemiology [Leipzig] ( IMISE ), University of Leipzig, University Hospital Ulm, Hannover Medical School [Hannover] ( MHH ), Westfälische Wilhelms-Universität Münster ( WWU ), University Wurzburg-Institute of Human Genetics-Centre of Familial Breast and Ovarian Cancer, University Regensburg, INSTITUT CURIE, Université Paris 13 ( UP13 ) -Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Avicenne, Centre Hospitalier Universitaire Clermont-Ferrand, Centre François Baclesse, Hôpital Bretonneau-CHRU Tours, Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ) -Hôpital Arnaud de Villeneuve, Validation et identification de nouvelles cibles en oncologie ( VINCO ), Université Bordeaux Segalen - Bordeaux 2-Institut Bergonié - CRLCC Bordeaux-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Unité de génétique et biologie des cancers ( U830 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut Curie-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laval University [Québec], University of Padua and Istituto Oncologico Veneto IOV - IRCCS, University of Pennsylvania Perelman School of Medicine, University of California at Los Angeles [Los Angeles] ( UCLA ), University of Texas at Houston [Houston] ( UTHealth ) -Harold C. Simmons Comprehensive Cancer Center, University of Texas Health Science, Medical University of Vienna, Mount Sinai Hospital, The Ohio State University Comprehensive Cancer Center, University of Copenhagen ( KU ) -Rigshospital, University of Pisa [Pisa], Linköping University ( LIU ), Sahlgrenska University Hospital, the Beckman Research Institute of the City of Hope, University of California [San Francisco] ( UCSF ), European Project : 223175,EC:FP7:HEALTH,FP7-HEALTH-2007-B,COGS ( 2009 ), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Avicenne [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris 13 (UP13), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Bergonié [Bordeaux], UNICANCER-UNICANCER-Université Bordeaux Segalen - Bordeaux 2, Human Genetics, Universiteit Leiden-Universiteit Leiden, Nottingham University Hospitals NHS Trust (NUH), Universität Leipzig, Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), and Roswell Park Cancer Institute [Buffalo] (RPCI)

Subjects
Risk, Heterozygote, endocrine system diseases, Population, Genes, BRCA2, Genes, BRCA1, Social Sciences, Estrogen receptor, Single-nucleotide polymorphism, [SDV.CAN]Life Sciences [q-bio]/Cancer, Breast Neoplasms, Biology, Polymorphism, Single Nucleotide, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 03 medical and health sciences, 610 Medical sciences Medicine, 0302 clinical medicine, Breast cancer, [SDV.CAN] Life Sciences [q-bio]/Cancer, SDG 3 - Good Health and Well-being, Genotype, medicine, Humans, Genetic Predisposition to Disease, education, skin and connective tissue diseases, Estrogen Receptor Status, Alleles, 030304 developmental biology, Medicine(all), 0303 health sciences, education.field_of_study, Samhällsvetenskap, medicine.disease, 3. Good health, TOX3, Receptors, Estrogen, Cancer and Oncology, 030220 oncology & carcinogenesis, Mutation, Cancer research, Female, Ovarian cancer, Receptors, Progesterone, Research Article
Abstract

[Introduction]: Previous studies have demonstrated that common breast cancer susceptibility alleles are differentially associated with breast cancer risk for BRCA1 and/or BRCA2 mutation carriers. It is currently unknown how these alleles are associated with different breast cancer subtypes in BRCA1 and BRCA2 mutation carriers defined by estrogen (ER) or progesterone receptor (PR) status of the tumour. [Methods]: We used genotype data on up to 11,421 BRCA1 and 7,080 BRCA2 carriers, of whom 4,310 had been affected with breast cancer and had information on either ER or PR status of the tumour, to assess the associations of 12 loci with breast cancer tumour characteristics. Associations were evaluated using a retrospective cohort approach. [Results]: The results suggested stronger associations with ER-positive breast cancer than ER-negative for 11 loci in both BRCA1 and BRCA2 carriers. Among BRCA1 carriers, single nucleotide polymorphism (SNP) rs2981582 (FGFR2) exhibited the biggest difference based on ER status (per-allele hazard ratio (HR) for ER-positive = 1.35, 95% CI: 1.17 to 1.56 vs HR = 0.91, 95% CI: 0.85 to 0.98 for ER-negative, P-heterogeneity = 6.5 × 10-6). In contrast, SNP rs2046210 at 6q25.1 near ESR1 was primarily associated with ER-negative breast cancer risk for both BRCA1 and BRCA2 carriers. In BRCA2 carriers, SNPs in FGFR2, TOX3, LSP1, SLC4A7/NEK10, 5p12, 2q35, and 1p11.2 were significantly associated with ER-positive but not ER-negative disease. Similar results were observed when differentiating breast cancer cases by PR status. [Conclusions]: The associations of the 12 SNPs with risk for BRCA1 and BRCA2 carriers differ by ER-positive or ER-negative breast cancer status. The apparent differences in SNP associations between BRCA1 and BRCA2 carriers, and non-carriers, may be explicable by differences in the prevalence of tumour subtypes. As more risk modifying variants are identified, incorporating these associations into breast cancer subtype-specific risk models may improve clinical management for mutation carriers.

Published
2011

14. Characterization of an Italian Founder Mutation in the RING-Finger Domain of BRCA1.

Author

Caleca, Laura, Putignano, Anna Laura, Colombo, Mara, Congregati, Caterina, Sarkar, Mohosin, Magliery, Thomas J., Ripamonti, Carla B., Foglia, Claudia, Peissel, Bernard, Zaffaroni, Daniela, Manoukian, Siranoush, Tondini, Carlo, Barile, Monica, Pensotti, Valeria, Bernard, Loris, Papi, Laura, and Radice, Paolo

Subjects
CANCER genetics, ITALIANS, GENETIC mutation, REVERSE transcriptase polymerase chain reaction, MESSENGER RNA, GREEN fluorescent protein, DISEASES
Abstract

The identification of founder mutations in cancer predisposing genes is important to improve risk assessment in geographically defined populations, since it may provide specific targets resulting in cost-effective genetic testing. Here, we report the characterization of the BRCA1 c.190T>C (p.Cys64Arg) mutation, mapped to the RING-finger domain coding region, that we detected in 43 hereditary breast/ovarian cancer (HBOC) families, for the large part originating from the province of Bergamo (Northern Italy). Haplotype analysis was performed in 21 families, and led to the identification of a shared haplotype extending over three BRCA1-associated marker loci (0.4 cM). Using the DMLE+2.2 software program and regional population demographic data, we were able to estimate the age of the mutation to vary between 3,100 and 3,350 years old. Functional characterization of the mutation was carried out at both transcript and protein level. Reverse transcriptase-PCR analysis on lymphoblastoid cells revealed expression of full length mRNA from the mutant allele. A green fluorescent protein (GFP)-fragment reassembly assay showed that the p.Cys64Arg substitution prevents the binding of the BRCA1 protein to the interacting protein BARD1, in a similar way as proven deleterious mutations in the RING-domain. Overall, 55 of 83 (66%) female mutation carriers had a diagnosis of breast and/or ovarian cancer. Our observations indicate that the BRCA1 c.190T>C is a pathogenic founder mutation present in the Italian population. Further analyses will evaluate whether screening for this mutation can be suggested as an effective strategy for the rapid identification of at-risk individuals in the Bergamo area. [ABSTRACT FROM AUTHOR]

Published
2014
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15. Identification of independent association signals and putative functional variants for breast cancer risk through fine-scale mapping of the 12p11 locus

Author

Zeng, Chenjie, Guo, Xingyi, Long, Jirong, Kuchenbaecker, Karoline B., Droit, Arnaud, Michailidou, Kyriaki, Ghoussaini, Maya, Kar, Siddhartha, Freeman, Adam, Hopper, John L., Milne, Roger L., Bolla, Manjeet K., Wang, Qin, Dennis, Joe, Agata, Simona, Ahmed, Shahana, Aittomäki, Kristiina, Andrulis, Irene L., Anton-Culver, Hoda, Antonenkova, Natalia N., Arason, Adalgeir, Arndt, Volker, Arun, Banu K., Arver, Brita, Bacot, Francois, Barrowdale, Daniel, Baynes, Caroline, Beeghly-Fadiel, Alicia, Benitez, Javier, Bermisheva, Marina, Blomqvist, Carl, Blot, William J., Bogdanova, Natalia V., Bojesen, Stig E., Bonanni, Bernardo, Borresen-Dale, Anne-Lise, Brand, Judith S., Brauch, Hiltrud, Brennan, Paul, Brenner, Hermann, Broeks, Annegien, Brüning, Thomas, Burwinkel, Barbara, Buys, Saundra S., Cai, Qiuyin, Caldes, Trinidad, Campbell, Ian, Carpenter, Jane, Chang-Claude, Jenny, Choi, Ji-Yeob, Claes, Kathleen B. M., Clarke, Christine, Cox, Angela, Cross, Simon S., Czene, Kamila, Daly, Mary B., de la Hoya, Miguel, De Leeneer, Kim, Devilee, Peter, Diez, Orland, Domchek, Susan M., Doody, Michele, Dorfling, Cecilia M., Dörk, Thilo, dos-Santos-Silva, Isabel, Dumont, Martine, Dwek, Miriam, Dworniczak, Bernd, Egan, Kathleen, Eilber, Ursula, Einbeigi, Zakaria, Ejlertsen, Bent, Ellis, Steve, Frost, Debra, Lalloo, Fiona, Fasching, Peter A., Figueroa, Jonine, Flyger, Henrik, Friedlander, Michael, Friedman, Eitan, Gambino, Gaetana, Gao, Yu-Tang, Garber, Judy, García-Closas, Montserrat, Gehrig, Andrea, Damiola, Francesca, Lesueur, Fabienne, Mazoyer, Sylvie, Stoppa-Lyonnet, Dominique, Giles, Graham G., Godwin, Andrew K., Goldgar, David E., González-Neira, Anna, Greene, Mark H., Guénel, Pascal, Haeberle, Lothar, Haiman, Christopher A., Hallberg, Emily, Hamann, Ute, Hansen, Thomas V. O., Hart, Steven, Hartikainen, Jaana M., Hartman, Mikael, Hassan, Norhashimah, Healey, Sue, Hogervorst, Frans B. L., Verhoef, Senno, Hendricks, Carolyn B., Hillemanns, Peter, Hollestelle, Antoinette, Hulick, Peter J., Hunter, David J., Imyanitov, Evgeny N., Isaacs, Claudine, Ito, Hidemi, Jakubowska, Anna, Janavicius, Ramunas, Jaworska-Bieniek, Katarzyna, Jensen, Uffe Birk, John, Esther M., Joly Beauparlant, Charles, Jones, Michael, Kabisch, Maria, Kang, Daehee, Karlan, Beth Y., Kauppila, Saila, Kerin, Michael J., Khan, Sofia, Khusnutdinova, Elza, Knight, Julia A., Konstantopoulou, Irene, Kraft, Peter, Kwong, Ava, Laitman, Yael, Lambrechts, Diether, Lazaro, Conxi, Le Marchand, Loic, Lee, Chuen Neng, Lee, Min Hyuk, Lester, Jenny, Li, Jingmei, Liljegren, Annelie, Lindblom, Annika, Lophatananon, Artitaya, Lubinski, Jan, Mai, Phuong L., Mannermaa, Arto, Manoukian, Siranoush, Margolin, Sara, Marme, Frederik, Matsuo, Keitaro, McGuffog, Lesley, Meindl, Alfons, Menegaux, Florence, Montagna, Marco, Muir, Kenneth, Mulligan, Anna Marie, Nathanson, Katherine L., Neuhausen, Susan L., Nevanlinna, Heli, Newcomb, Polly A., Nord, Silje, Nussbaum, Robert L., Offit, Kenneth, Olah, Edith, Olopade, Olufunmilayo I., Olswold, Curtis, Osorio, Ana, Papi, Laura, Park-Simon, Tjoung-Won, Paulsson-Karlsson, Ylva, Peeters, Stephanie, Peissel, Bernard, Peterlongo, Paolo, Peto, Julian, Pfeiler, Georg, Phelan, Catherine M., Presneau, Nadege, Radice, Paolo, Rahman, Nazneen, Ramus, Susan J., Rashid, Muhammad Usman, Rennert, Gad, Rhiem, Kerstin, Rudolph, Anja, Salani, Ritu, Sangrajrang, Suleeporn, Sawyer, Elinor J., Schmidt, Marjanka K, Schmutzler, Rita K., Schoemaker, Minouk J., Schürmann, Peter, Seynaeve, Caroline, Shen, Chen-Yang, Shrubsole, Martha J., Shu, Xiao-Ou, Sigurdson, Alice, Singer, Christian F., Slager, Susan, Soucy, Penny, Southey, Melissa, Steinemann, Doris, Swerdlow, Anthony, Szabo, Csilla I., Tchatchou, Sandrine, Teixeira, Manuel R., Teo, Soo H., Terry, Mary Beth, Tessier, Daniel C., Teulé, Alex, Thomassen, Mads, Tihomirova, Laima, Tischkowitz, Marc, Toland, Amanda E., Tung, Nadine, Turnbull, Clare, van den Ouweland, Ans M. W., van Rensburg, Elizabeth J., ven den Berg, David, Vijai, Joseph, Wang-Gohrke, Shan, Weitzel, Jeffrey N., Whittemore, Alice S., Winqvist, Robert, Wong, Tien Y., Wu, Anna H., Yannoukakos, Drakoulis, Yu, Jyh-Cherng, Pharoah, Paul D. P., Hall, Per, Chenevix-Trench, Georgia, Dunning, Alison M., Simard, Jacques, Couch, Fergus J., Antoniou, Antonis C., Easton, Douglas F., and Zheng, Wei

Subjects
Fine-scale mapping, Genetic risk factor, Breast cancer
Abstract

Background: Multiple recent genome-wide association studies (GWAS) have identified a single nucleotide polymorphism (SNP), rs10771399, at 12p11 that is associated with breast cancer risk. Method We performed a fine-scale mapping study of a 700 kb region including 441 genotyped and more than 1300 imputed genetic variants in 48,155 cases and 43,612 controls of European descent, 6269 cases and 6624 controls of East Asian descent and 1116 cases and 932 controls of African descent in the Breast Cancer Association Consortium (BCAC; http://bcac.ccge.medschl.cam.ac.uk/), and in 15,252 BRCA1 mutation carriers in the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). Stepwise regression analyses were performed to identify independent association signals. Data from the Encyclopedia of DNA Elements project (ENCODE) and the Cancer Genome Atlas (TCGA) were used for functional annotation. Results: Analysis of data from European descendants found evidence for four independent association signals at 12p11, represented by rs7297051 (odds ratio (OR) = 1.09, 95 % confidence interval (CI) = 1.06–1.12; P = 3 × 10-9), rs805510 (OR = 1.08, 95 % CI = 1.04–1.12, P = 2 × 10-5), and rs1871152 (OR = 1.04, 95 % CI = 1.02–1.06; P = 2 × 10-4) identified in the general populations, and rs113824616 (P = 7 × 10-5) identified in the meta-analysis of BCAC ER-negative cases and BRCA1 mutation carriers. SNPs rs7297051, rs805510 and rs113824616 were also associated with breast cancer risk at P < 0.05 in East Asians, but none of the associations were statistically significant in African descendants. Multiple candidate functional variants are located in putative enhancer sequences. Chromatin interaction data suggested that PTHLH was the likely target gene of these enhancers. Of the six variants with the strongest evidence of potential functionality, rs11049453 was statistically significantly associated with the expression of PTHLH and its nearby gene CCDC91 at P < 0.05. Conclusion: This study identified four independent association signals at 12p11 and revealed potentially functional variants, providing additional insights into the underlying biological mechanism(s) for the association observed between variants at 12p11 and breast cancer risk. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0718-0) contains supplementary material, which is available to authorized users.

Published
2016
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16. Germline mutations in MEN1 and BRCA1 genes in a woman with familial multiple endocrine neoplasia type 1 and inherited breast–ovarian cancer syndromes: a case report

Author

Papi, Laura, Palli, Domenico, Masi, Laura, Putignano, Anna Laura, Congregati, Caterina, Zanna, Ines, Marini, Francesca, Giusti, Francesca, Luzi, Ettore, Tonelli, Francesco, Genuardi, Maurizio, Brandi, Maria Luisa, and Falchetti, Alberto

Subjects
*GERM cells, *GENETIC mutation, *ENDOCRINE gland tumors, *FAMILIAL diseases, *CANCER in women, *OVARIAN cancer, *BREAST cancer, *TUMOR suppressor genes, *GENETICS
Abstract

Abstract: The simultaneous occurrence of mutations in two different tumor suppressor genes in the same individual is a very rare event. Here we report the case of a woman in whom germline mutations in both MEN1 and BRCA1 were identified. The severity of MEN1-related biochemical and clinical findings did not significantly differ from that for other affected family members lacking the BRCA1 mutation, except for the development of an extremely large visceral lipoma; the proband has not developed any BRCA1-related malignancies. We explore genetic and molecular rationales for an association between these neoplastic processes. [Copyright &y& Elsevier]

Published
2009
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17. Mutational spectrum in a worldwide study of 29,700 families with BRCA1 or BRCA2 mutations

Author

Rebbeck, Timothy R, Friebel, Tara M, Friedman, Eitan, Hamann, Ute, Huo, Dezheng, Kwong, Ava, Olah, Edith, Olopade, Olufunmilayo I, Solano, Angela R, Teo, Soo-Hwang, Thomassen, Mads, Weitzel, Jeffrey N, Chan, TL, Couch, Fergus J, Goldgar, David E, Kruse, Torben A, Palmero, Edenir Inêz, Park, Sue Kyung, Torres, Diana, Van Rensburg, Elizabeth J, McGuffog, Lesley, Parsons, Michael T, Leslie, Goska, Aalfs, Cora M, Abugattas, Julio, Adlard, Julian, Agata, Simona, Aittomäki, Kristiina, Andrews, Lesley, Andrulis, Irene L, Arason, Adalgeir, Arnold, Norbert, Arun, Banu K, Asseryanis, Ella, Auerbach, Leo, Azzollini, Jacopo, Balmaña, Judith, Barile, Monica, Barkardottir, Rosa B, Barrowdale, Daniel, Benitez, Javier, Berger, Andreas, Berger, Raanan, Blanco, Amie M, Blazer, Kathleen R, Blok, Marinus J, Bonadona, Valérie, Bonanni, Bernardo, Bradbury, Angela R, Brewer, Carole, Buecher, Bruno, Buys, Saundra S, Caldes, Trinidad, Caliebe, Almuth, Caligo, Maria A, Campbell, Ian, Caputo, Sandrine M, Chiquette, Jocelyne, Chung, Wendy K, Claes, Kathleen BM, Collée, J Margriet, Cook, Jackie, Davidson, Rosemarie, De La Hoya, Miguel, De Leeneer, Kim, De Pauw, Antoine, Delnatte, Capucine, Diez, Orland, Ding, Yuan Chun, Ditsch, Nina, Domchek, Susan M, Dorfling, Cecilia M, Velazquez, Carolina, Dworniczak, Bernd, Eason, Jacqueline, Easton, Douglas F, Eeles, Ros, Ehrencrona, Hans, Ejlertsen, Bent, EMBRACE, Engel, Christoph, Engert, Stefanie, Evans, D Gareth, Faivre, Laurence, Feliubadaló, Lidia, Ferrer, Sandra Fert, Foretova, Lenka, Fowler, Jeffrey, Frost, Debra, Galvão, Henrique CR, Ganz, Patricia A, Garber, Judy, Gauthier-Villars, Marion, Gehrig, Andrea, GEMO Study Collaborators, Gerdes, Anne-Marie, Gesta, Paul, Giannini, Giuseppe, Giraud, Sophie, Glendon, Gord, Godwin, Andrew K, Greene, Mark H, Gronwald, Jacek, Gutierrez-Barrera, Angelica, Hahnen, Eric, Hauke, Jan, HEBON, Henderson, Alex, Hentschel, Julia, Hogervorst, Frans BL, Honisch, Ellen, Imyanitov, Evgeny N, Isaacs, Claudine, Izatt, Louise, Izquierdo, Angel, Jakubowska, Anna, James, Paul, Janavicius, Ramunas, Jensen, Uffe Birk, John, Esther M, Vijai, Joseph, Kaczmarek, Katarzyna, Karlan, Beth Y, Kast, Karin, Investigators, KConFab, Kim, Sung-Won, Konstantopoulou, Irene, Korach, Jacob, Laitman, Yael, Lasa, Adriana, Lasset, Christine, Lázaro, Conxi, Lee, Annette, Lee, Min Hyuk, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Lindor, Noralane M, Longy, Michel, Loud, Jennifer T, Lu, Karen H, Lubinski, Jan, Machackova, Eva, Manoukian, Siranoush, Mari, Véronique, Martínez-Bouzas, Cristina, Matrai, Zoltan, Mebirouk, Noura, Meijers-Heijboer, Hanne EJ, Meindl, Alfons, Mensenkamp, Arjen R, Mickys, Ugnius, Miller, Austin, Montagna, Marco, Moysich, Kirsten B, Mulligan, Anna Marie, Musinsky, Jacob, Neuhausen, Susan L, Nevanlinna, Heli, Ngeow, Joanne, Nguyen, Huu Phuc, Niederacher, Dieter, Nielsen, Henriette Roed, Nielsen, Finn Cilius, Nussbaum, Robert L, Offit, Kenneth, Öfverholm, Anna, Ong, Kai-Ren, Osorio, Ana, Papi, Laura, Papp, Janos, Pasini, Barbara, Pedersen, Inge Sokilde, Peixoto, Ana, Peruga, Nina, Peterlongo, Paolo, Pohl, Esther, Pradhan, Nisha, Prajzendanc, Karolina, Prieur, Fabienne, Pujol, Pascal, Radice, Paolo, Ramus, Susan J, Rantala, Johanna, Rashid, Muhammad Usman, Rhiem, Kerstin, Robson, Mark, Rodriguez, Gustavo C, Rogers, Mark T, Rudaitis, Vilius, Schmidt, Ane Y, Schmutzler, Rita Katharina, Senter, Leigha, Shah, Payal D, Sharma, Priyanka, Side, Lucy E, Simard, Jacques, Singer, Christian F, Skytte, Anne-Bine, Slavin, Thomas P, Snape, Katie, Sobol, Hagay, Southey, Melissa, Steele, Linda, Steinemann, Doris, Sukiennicki, Grzegorz, Sutter, Christian, Szabo, Csilla I, Tan, Yen Y, Teixeira, Manuel R, Terry, Mary Beth, Teulé, Alex, Thomas, Abigail, Thull, Darcy L, Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda Ewart, Topka, Sabine, Trainer, Alison H, Tung, Nadine, Van Asperen, Christi J, Van Der Hout, Annemieke H, Van Der Kolk, Lizet E, Van Der Luijt, Rob B, Van Heetvelde, Mattias, Varesco, Liliana, Varon-Mateeva, Raymonda, Vega, Ana, Villarreal-Garza, Cynthia, Von Wachenfeldt, Anna, Walker, Lisa, Wang-Gohrke, Shan, Wappenschmidt, Barbara, Weber, Bernhard HF, Yannoukakos, Drakoulis, Yoon, Sook-Yee, Zanzottera, Cristina, Zidan, Jamal, Zorn, Kristin K, Hutten Selkirk, Christina G, Hulick, Peter J, Chenevix-Trench, Georgia, Spurdle, Amanda B, Antoniou, Antonis C, and Nathanson, Katherine L

Subjects
BRCA2 Protein, Internationality, endocrine system diseases, Geography, BRCA1 Protein, BRCA1, BRCA2, 3. Good health, breast cancer, ovarian cancer, Databases, Genetic, Mutation, ethnicity, Humans, Family, skin and connective tissue diseases
Abstract

The prevalence and spectrum of germline mutations in BRCA1 and BRCA2 have been reported in single populations, with the majority of reports focused on White in Europe and North America. The Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA) has assembled data on 18,435 families with BRCA1 mutations and 11,351 families with BRCA2 mutations ascertained from 69 centers in 49 countries on six continents. This study comprehensively describes the characteristics of the 1,650 unique BRCA1 and 1,731 unique BRCA2 deleterious (disease-associated) mutations identified in the CIMBA database. We observed substantial variation in mutation type and frequency by geographical region and race/ethnicity. In addition to known founder mutations, mutations of relatively high frequency were identified in specific racial/ethnic or geographic groups that may reflect founder mutations and which could be used in targeted (panel) first pass genotyping for specific populations. Knowledge of the population-specific mutational spectrum in BRCA1 and BRCA2 could inform efficient strategies for genetic testing and may justify a more broad-based oncogenetic testing in some populations.

18. Polygenic risk scores and breast and epithelial ovarian cancer risks for carriers of BRCA1 and BRCA2 pathogenic variants

Author

Barnes, Daniel R, Rookus, Matti A, McGuffog, Lesley, Leslie, Goska, Mooij, Thea M, Dennis, Joe, Mavaddat, Nasim, Adlard, Julian, Ahmed, Munaza, Aittomäki, Kristiina, Andrieu, Nadine, Andrulis, Irene L, Arnold, Norbert, Arun, Banu K, Azzollini, Jacopo, Balmaña, Judith, Barkardottir, Rosa B, Barrowdale, Daniel, Benitez, Javier, Berthet, Pascaline, Białkowska, Katarzyna, Blanco, Amie M, Blok, Marinus J, Bonanni, Bernardo, Boonen, Susanne E, Borg, Åke, Bozsik, Aniko, Bradbury, Angela R, Brennan, Paul, Brewer, Carole, Brunet, Joan, Buys, Saundra S, Caldés, Trinidad, Caligo, Maria A, Campbell, Ian, Christensen, Lise Lotte, Chung, Wendy K, Claes, Kathleen BM, Colas, Chrystelle, GEMO Study Collaborators, EMBRACE Collaborators, Collonge-Rame, Marie-Agnès, Cook, Jackie, Daly, Mary B, Davidson, Rosemarie, De La Hoya, Miguel, De Putter, Robin, Delnatte, Capucine, Devilee, Peter, Diez, Orland, Ding, Yuan Chun, Domchek, Susan M, Dorfling, Cecilia M, Dumont, Martine, Eeles, Ros, Ejlertsen, Bent, Engel, Christoph, Evans, D Gareth, Faivre, Laurence, Foretova, Lenka, Fostira, Florentia, Friedlander, Michael, Friedman, Eitan, Frost, Debra, Ganz, Patricia A, Garber, Judy, Gehrig, Andrea, Gerdes, Anne-Marie, Gesta, Paul, Giraud, Sophie, Glendon, Gord, Godwin, Andrew K, Goldgar, David E, González-Neira, Anna, Greene, Mark H, Gschwantler-Kaulich, Daphne, Hahnen, Eric, Hamann, Ute, Hanson, Helen, Hentschel, Julia, Hogervorst, Frans BL, Hooning, Maartje J, Horvath, Judit, Hu, Chunling, Hulick, Peter J, Imyanitov, Evgeny N, KConFab Investigators, HEBON Investigators, GENEPSO Investigators, Isaacs, Claudine, Izatt, Louise, Izquierdo, Angel, Jakubowska, Anna, James, Paul A, Janavicius, Ramunas, John, Esther M, Joseph, Vijai, Karlan, Beth Y, Kast, Karin, Koudijs, Marco, Kruse, Torben A, Kwong, Ava, Laitman, Yael, Lasset, Christine, Lazaro, Conxi, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Loud, Jennifer T, Lubiński, Jan, Mai, Phuong L, Manoukian, Siranoush, Mari, Véronique, Mebirouk, Noura, Meijers-Heijboer, Hanne EJ, Meindl, Alfons, Mensenkamp, Arjen R, Miller, Austin, Montagna, Marco, Mouret-Fourme, Emmanuelle, Mukherjee, Semanti, Mulligan, Anna Marie, Nathanson, Katherine L, Neuhausen, Susan L, Nevanlinna, Heli, Niederacher, Dieter, Nielsen, Finn Cilius, Nikitina-Zake, Liene, Noguès, Catherine, Olah, Edith, Olopade, Olufunmilayo I, Ong, Kai-Ren, O'Shaughnessy-Kirwan, Aoife, Osorio, Ana, Ott, Claus-Eric, Papi, Laura, Park, Sue K, Parsons, Michael T, Pedersen, Inge Sokilde, Peissel, Bernard, Peixoto, Ana, Peterlongo, Paolo, Pfeiler, Georg, Phillips, Kelly-Anne, Prajzendanc, Karolina, Pujana, Miquel Angel, Radice, Paolo, Ramser, Juliane, Ramus, Susan J, Rantala, Johanna, Rennert, Gad, Risch, Harvey A, Robson, Mark, Rønlund, Karina, Salani, Ritu, Schuster, Hélène, Senter, Leigha, Shah, Payal D, Sharma, Priyanka, Side, Lucy E, Singer, Christian F, Slavin, Thomas P, Soucy, Penny, Southey, Melissa C, Spurdle, Amanda B, Steinemann, Doris, Steinsnyder, Zoe, Stoppa-Lyonnet, Dominique, Sutter, Christian, Tan, Yen Yen, Teixeira, Manuel R, Teo, Soo Hwang, Thull, Darcy L, Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda E, Trainer, Alison H, Tung, Nadine, Van Engelen, Klaartje, Van Rensburg, Elizabeth J, Vega, Ana, Vierstraete, Jeroen, Wagner, Gabriel, Walker, Lisa, Wang-Gohrke, Shan, Wappenschmidt, Barbara, Weitzel, Jeffrey N, Yadav, Siddhartha, Yang, Xin, Yannoukakos, Drakoulis, Zimbalatti, Dario, Offit, Kenneth, Thomassen, Mads, Couch, Fergus J, Schmutzler, Rita K, Simard, Jacques, Easton, Douglas F, Chenevix-Trench, Georgia, Antoniou, Antonis C, and Consortium Of Investigators Of Modifiers Of BRCA And BRCA2

Subjects
BRCA2 Protein, Ovarian Neoplasms, Heterozygote, endocrine system diseases, BRCA1 Protein, Breast Neoplasms, Carcinoma, Ovarian Epithelial, PRS, 3. Good health, breast cancer, ovarian cancer, BRCA1/2, Risk Factors, Mutation, Humans, genetics, Female, Genetic Predisposition to Disease, Prospective Studies, Retrospective Studies
Abstract

PURPOSE: We assessed the associations between population-based polygenic risk scores (PRS) for breast (BC) or epithelial ovarian cancer (EOC) with cancer risks for BRCA1 and BRCA2 pathogenic variant carriers. METHODS: Retrospective cohort data on 18,935 BRCA1 and 12,339 BRCA2 female pathogenic variant carriers of European ancestry were available. Three versions of a 313 single-nucleotide polymorphism (SNP) BC PRS were evaluated based on whether they predict overall, estrogen receptor (ER)-negative, or ER-positive BC, and two PRS for overall or high-grade serous EOC. Associations were validated in a prospective cohort. RESULTS: The ER-negative PRS showed the strongest association with BC risk for BRCA1 carriers (hazard ratio [HR] per standard deviation = 1.29 [95% CI 1.25-1.33], P = 3×10-72). For BRCA2, the strongest association was with overall BC PRS (HR = 1.31 [95% CI 1.27-1.36], P = 7×10-50). HR estimates decreased significantly with age and there was evidence for differences in associations by predicted variant effects on protein expression. The HR estimates were smaller than general population estimates. The high-grade serous PRS yielded the strongest associations with EOC risk for BRCA1 (HR = 1.32 [95% CI 1.25-1.40], P = 3×10-22) and BRCA2 (HR = 1.44 [95% CI 1.30-1.60], P = 4×10-12) carriers. The associations in the prospective cohort were similar. CONCLUSION: Population-based PRS are strongly associated with BC and EOC risks for BRCA1/2 carriers and predict substantial absolute risk differences for women at PRS distribution extremes.

19. Polygenic risk scores and breast and epithelial ovarian cancer risks for carriers of BRCA1 and BRCA2 pathogenic variants

Author

Barnes, Daniel R., Rookus, Matti A., McGuffog, Lesley, Leslie, Goska, Mooij, Thea M., Dennis, Joe, Mavaddat, Nasim, Adlard, Julian, Ahmed, Munaza, Aittomäki, Kristiina, Andrieu, Nadine, Andrulis, Irene L., Arnold, Norbert, Arun, Banu K., Azzollini, Jacopo, Balmaña, Judith, Barkardottir, Rosa B., Barrowdale, Daniel, Benitez, Javier, Berthet, Pascaline, Białkowska, Katarzyna, Blanco, Amie M., Blok, Marinus J., Bonanni, Bernardo, Boonen, Susanne E., Borg, Åke, Bozsik, Aniko, Bradbury, Angela R., Brennan, Paul, Brewer, Carole, Brunet, Joan, Buys, Saundra S., Caldés, Trinidad, Caligo, Maria A., Campbell, Ian, Christensen, Lise Lotte, Chung, Wendy K., Claes, Kathleen B. M., Colas, Chrystelle, Collonge-Rame, Marie-Agnès, Cook, Jackie, Daly, Mary B., Davidson, Rosemarie, De La Hoya, Miguel, De Putter, Robin, Delnatte, Capucine, Devilee, Peter, Diez, Orland, Ding, Yuan Chun, Domchek, Susan M., Dorfling, Cecilia M., Dumont, Martine, Eeles, Ros, Ejlertsen, Bent, Engel, Christoph, Evans, D. Gareth, Faivre, Laurence, Foretova, Lenka, Fostira, Florentia, Friedlander, Michael, Friedman, Eitan, Frost, Debra, Ganz, Patricia A., Garber, Judy, Gehrig, Andrea, Gerdes, Anne-Marie, Gesta, Paul, Giraud, Sophie, Glendon, Gord, Godwin, Andrew K., Goldgar, David E., González-Neira, Anna, Greene, Mark H., Gschwantler-Kaulich, Daphne, Hahnen, Eric, Hamann, Ute, Hanson, Helen, Hentschel, Julia, Hogervorst, Frans B. L., Hooning, Maartje J., Horvath, Judit, Hu, Chunling, Hulick, Peter J., Imyanitov, Evgeny N., Isaacs, Claudine, Izatt, Louise, Izquierdo, Angel, Jakubowska, Anna, James, Paul A., Janavicius, Ramunas, John, Esther M., Joseph, Vijai, Karlan, Beth Y., Kast, Karin, Koudijs, Marco, Kruse, Torben A., Kwong, Ava, Laitman, Yael, Lasset, Christine, Lazaro, Conxi, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Loud, Jennifer T., Lubiński, Jan, Mai, Phuong L., Manoukian, Siranoush, Mari, Véronique, Mebirouk, Noura, Meijers-Heijboer, Hanne E. J., Meindl, Alfons, Mensenkamp, Arjen R., Miller, Austin, Montagna, Marco, Mouret-Fourme, Emmanuelle, Mukherjee, Semanti, Mulligan, Anna Marie, Nathanson, Katherine L., Neuhausen, Susan L., Nevanlinna, Heli, Niederacher, Dieter, Nielsen, Finn Cilius, Nikitina-Zake, Liene, Noguès, Catherine, Olah, Edith, Olopade, Olufunmilayo I., Ong, Kai-Ren, O’Shaughnessy-Kirwan, Aoife, Osorio, Ana, Ott, Claus-Eric, Papi, Laura, Park, Sue K., Parsons, Michael T., Pedersen, Inge Sokilde, Peissel, Bernard, Peixoto, Ana, Peterlongo, Paolo, Pfeiler, Georg, Phillips, Kelly-Anne, Prajzendanc, Karolina, Pujana, Miquel Angel, Radice, Paolo, Ramser, Juliane, Ramus, Susan J., Rantala, Johanna, Rennert, Gad, Risch, Harvey A., Robson, Mark, Rønlund, Karina, Salani, Ritu, Schuster, Hélène, Senter, Leigha, Shah, Payal D., Sharma, Priyanka, Side, Lucy E., Singer, Christian F., Slavin, Thomas P., Soucy, Penny, Southey, Melissa C., Spurdle, Amanda B., Steinemann, Doris, Steinsnyder, Zoe, Stoppa-Lyonnet, Dominique, Sutter, Christian, Tan, Yen Yen, Teixeira, Manuel R., Teo, Soo Hwang, Thull, Darcy L., Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda E., Trainer, Alison H., Tung, Nadine, Van Engelen, Klaartje, Van Rensburg, Elizabeth J., Vega, Ana, Vierstraete, Jeroen, Wagner, Gabriel, Walker, Lisa, Wang-Gohrke, Shan, Wappenschmidt, Barbara, Weitzel, Jeffrey N., Yadav, Siddhartha, Yang, Xin, Yannoukakos, Drakoulis, Zimbalatti, Dario, Offit, Kenneth, Thomassen, Mads, Couch, Fergus J., Schmutzler, Rita K., Simard, Jacques, Easton, Douglas F., Chenevix-Trench, Georgia, Antoniou, Antonis C., Antoniou, Antonis, Easton, Douglas, Side, Lucy, Spurdle, Amanda, Blok, Marinus, Hogervorst, Frans, Hooning, Maartje, Mensenkamp, Arjen, Meijers-Heijboer, Hanne, Rookus, Matti, and Engelen, Klaartje Van

Subjects
breast cancer, ovarian cancer, endocrine system diseases, BRCA1/2, article, genetics, PRS, 3. Good health
Abstract

Purpose: We assessed the associations between population-based polygenic risk scores (PRS) for breast (BC) or epithelial ovarian cancer (EOC) with cancer risks for BRCA1 and BRCA2 pathogenic variant carriers. Methods: Retrospective cohort data on 18,935 BRCA1 and 12,339 BRCA2 female pathogenic variant carriers of European ancestry were available. Three versions of a 313 single-nucleotide polymorphism (SNP) BC PRS were evaluated based on whether they predict overall, estrogen receptor (ER)–negative, or ER-positive BC, and two PRS for overall or high-grade serous EOC. Associations were validated in a prospective cohort. Results: The ER-negative PRS showed the strongest association with BC risk for BRCA1 carriers (hazard ratio [HR] per standard deviation = 1.29 [95% CI 1.25–1.33], P = 3×10−72). For BRCA2, the strongest association was with overall BC PRS (HR = 1.31 [95% CI 1.27–1.36], P = 7×10−50). HR estimates decreased significantly with age and there was evidence for differences in associations by predicted variant effects on protein expression. The HR estimates were smaller than general population estimates. The high-grade serous PRS yielded the strongest associations with EOC risk for BRCA1 (HR = 1.32 [95% CI 1.25–1.40], P = 3×10−22) and BRCA2 (HR = 1.44 [95% CI 1.30–1.60], P = 4×10−12) carriers. The associations in the prospective cohort were similar. Conclusion: Population-based PRS are strongly associated with BC and EOC risks for BRCA1/2 carriers and predict substantial absolute risk differences for women at PRS distribution extremes.

20. Association of breast cancer risk in BRCA1 and BRCA2 mutation carriers with genetic variants showing differential allelic expression: identification of a modifier of breast cancer risk at locus 11q22.3

Author

Hamdi, Yosr, Soucy, Penny, Kuchenbaeker, Karoline B, Pastinen, Tomi, Droit, Arnaud, Lemaçon, Audrey, Adlard, Julian, Aittomäki, Kristiina, Andrulis, Irene L, Arason, Adalgeir, Arnold, Norbert, Arun, Banu K, Azzollini, Jacopo, Bane, Anita, Barjhoux, Laure, Barrowdale, Daniel, Benitez, Javier, Berthet, Pascaline, Blok, Marinus J, Bobolis, Kristie, Bonadona, Valérie, Bonanni, Bernardo, Bradbury, Angela R, Brewer, Carole, Buecher, Bruno, Buys, Saundra S, Caligo, Maria A, Chiquette, Jocelyne, Chung, Wendy K, Claes, Kathleen BM, Daly, Mary B, Damiola, Francesca, Davidson, Rosemarie, De La Hoya, Miguel, De Leeneer, Kim, Diez, Orland, Ding, Yuan Chun, Dolcetti, Riccardo, Domchek, Susan M, Dorfling, Cecilia M, Eccles, Diana, Eeles, Ros, Einbeigi, Zakaria, Ejlertsen, Bent, EMBRACE, Engel, Christoph, Gareth Evans, D, Feliubadalo, Lidia, Foretova, Lenka, Fostira, Florentia, Foulkes, William D, Fountzilas, George, Friedman, Eitan, Frost, Debra, Ganschow, Pamela, Ganz, Patricia A, Garber, Judy, Gayther, Simon A, GEMO Study Collaborators, Gerdes, Anne-Marie, Glendon, Gord, Godwin, Andrew K, Goldgar, David E, Greene, Mark H, Gronwald, Jacek, Hahnen, Eric, Hamann, Ute, Hansen, Thomas VO, Hart, Steven, Hays, John L, HEBON, Hogervorst, Frans BL, Hulick, Peter J, Imyanitov, Evgeny N, Isaacs, Claudine, Izatt, Louise, Jakubowska, Anna, James, Paul, Janavicius, Ramunas, Jensen, Uffe Birk, John, Esther M, Joseph, Vijai, Just, Walter, Kaczmarek, Katarzyna, Karlan, Beth Y, KConFab Investigators, Kets, Carolien M, Kirk, Judy, Kriege, Mieke, Laitman, Yael, Laurent, Maïté, Lazaro, Conxi, Leslie, Goska, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Loman, Niklas, Loud, Jennifer T, Manoukian, Siranoush, Mariani, Milena, Mazoyer, Sylvie, McGuffog, Lesley, Meijers-Heijboer, Hanne EJ, Meindl, Alfons, Miller, Austin, Montagna, Marco, Mulligan, Anna Marie, Nathanson, Katherine L, Neuhausen, Susan L, Nevanlinna, Heli, Nussbaum, Robert L, Olah, Edith, Olopade, Olufunmilayo I, Ong, Kai-Ren, Oosterwijk, Jan C, Osorio, Ana, Papi, Laura, Park, Sue Kyung, Pedersen, Inge Sokilde, Peissel, Bernard, Segura, Pedro Perez, Peterlongo, Paolo, Phelan, Catherine M, Radice, Paolo, Rantala, Johanna, Rappaport-Fuerhauser, Christine, Rennert, Gad, Richardson, Andrea, Robson, Mark, Rodriguez, Gustavo C, Rookus, Matti A, Schmutzler, Rita Katharina, Sevenet, Nicolas, Shah, Payal D, Singer, Christian F, Slavin, Thomas P, Snape, Katie, Sokolowska, Johanna, Sønderstrup, Ida Marie Heeholm, Southey, Melissa, Spurdle, Amanda B, Stadler, Zsofia, Stoppa-Lyonnet, Dominique, Sukiennicki, Grzegorz, Sutter, Christian, Tan, Yen, Tea, Muy-Kheng, Teixeira, Manuel R, Teulé, Alex, Teo, Soo-Hwang, Terry, Mary Beth, Thomassen, Mads, Tihomirova, Laima, Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda Ewart, Tung, Nadine, Van Den Ouweland, Ans MW, Van Der Luijt, Rob B, Van Engelen, Klaartje, Van Rensburg, Elizabeth J, Varon-Mateeva, Raymonda, Wappenschmidt, Barbara, Wijnen, Juul T, Rebbeck, Timothy, Chenevix-Trench, Georgia, Offit, Kenneth, Couch, Fergus J, Nord, Silje, Easton, Douglas F, Antoniou, Antonis C, and Simard, Jacques

Subjects
Genetic modifiers, Risk, Heterozygote, Chromosomes, Human, Pair 11, Genes, BRCA2, Quantitative Trait Loci, BRCA1 and BRCA2 mutation carriers, Genes, BRCA1, Gene Expression, Genetic Variation, Breast Neoplasms, 3. Good health, Breast cancer, Mutation, Genetic susceptibility, Biomarkers, Tumor, Humans, Cis-regulatory variants, Female, Genetic Predisposition to Disease, skin and connective tissue diseases, Differential allelic expression, Alleles
Abstract

PURPOSE: Cis-acting regulatory SNPs resulting in differential allelic expression (DAE) may, in part, explain the underlying phenotypic variation associated with many complex diseases. To investigate whether common variants associated with DAE were involved in breast cancer susceptibility among BRCA1 and BRCA2 mutation carriers, a list of 175 genes was developed based of their involvement in cancer-related pathways. METHODS: Using data from a genome-wide map of SNPs associated with allelic expression, we assessed the association of ~320 SNPs located in the vicinity of these genes with breast and ovarian cancer risks in 15,252 BRCA1 and 8211 BRCA2 mutation carriers ascertained from 54 studies participating in the Consortium of Investigators of Modifiers of BRCA1/2. RESULTS: We identified a region on 11q22.3 that is significantly associated with breast cancer risk in BRCA1 mutation carriers (most significant SNP rs228595 p = 7 × 10-6). This association was absent in BRCA2 carriers (p = 0.57). The 11q22.3 region notably encompasses genes such as ACAT1, NPAT, and ATM. Expression quantitative trait loci associations were observed in both normal breast and tumors across this region, namely for ACAT1, ATM, and other genes. In silico analysis revealed some overlap between top risk-associated SNPs and relevant biological features in mammary cell data, which suggests potential functional significance. CONCLUSION: We identified 11q22.3 as a new modifier locus in BRCA1 carriers. Replication in larger studies using estrogen receptor (ER)-negative or triple-negative (i.e., ER-, progesterone receptor-, and HER2-negative) cases could therefore be helpful to confirm the association of this locus with breast cancer risk.

21. Polygenic risk scores and breast and epithelial ovarian cancer risks for carriers of BRCA1 and BRCA2 pathogenic variants

Author

Barnes, Daniel R., Rookus, Matti A., McGuffog, Lesley, Leslie, Goska, Mooij, Thea M., Dennis, Joe, Mavaddat, Nasim, Adlard, Julian, Ahmed, Munaza, Aittomäki, Kristiina, Andrieu, Nadine, Andrulis, Irene L., Arnold, Norbert, Arun, Banu K., Azzollini, Jacopo, Balmaña, Judith, Barkardottir, Rosa B., Barrowdale, Daniel, Benitez, Javier, Berthet, Pascaline, Białkowska, Katarzyna, Blanco, Amie M., Blok, Marinus J., Bonanni, Bernardo, Boonen, Susanne E., Borg, Åke, Bozsik, Aniko, Bradbury, Angela R., Brennan, Paul, Brewer, Carole, Brunet, Joan, Buys, Saundra S., Caldés, Trinidad, Caligo, Maria A., Campbell, Ian, Christensen, Lise Lotte, Chung, Wendy K., Claes, Kathleen B. M., Colas, Chrystelle, Collonge-Rame, Marie-Agnès, Cook, Jackie, Daly, Mary B., Davidson, Rosemarie, De La Hoya, Miguel, De Putter, Robin, Delnatte, Capucine, Devilee, Peter, Diez, Orland, Ding, Yuan Chun, Domchek, Susan M., Dorfling, Cecilia M., Dumont, Martine, Eeles, Ros, Ejlertsen, Bent, Engel, Christoph, Evans, D. Gareth, Faivre, Laurence, Foretova, Lenka, Fostira, Florentia, Friedlander, Michael, Friedman, Eitan, Frost, Debra, Ganz, Patricia A., Garber, Judy, Gehrig, Andrea, Gerdes, Anne-Marie, Gesta, Paul, Giraud, Sophie, Glendon, Gord, Godwin, Andrew K., Goldgar, David E., González-Neira, Anna, Greene, Mark H., Gschwantler-Kaulich, Daphne, Hahnen, Eric, Hamann, Ute, Hanson, Helen, Hentschel, Julia, Hogervorst, Frans B. L., Hooning, Maartje J., Horvath, Judit, Hu, Chunling, Hulick, Peter J., Imyanitov, Evgeny N., Isaacs, Claudine, Izatt, Louise, Izquierdo, Angel, Jakubowska, Anna, James, Paul A., Janavicius, Ramunas, John, Esther M., Joseph, Vijai, Karlan, Beth Y., Kast, Karin, Koudijs, Marco, Kruse, Torben A., Kwong, Ava, Laitman, Yael, Lasset, Christine, Lazaro, Conxi, Lester, Jenny, Lesueur, Fabienne, Liljegren, Annelie, Loud, Jennifer T., Lubiński, Jan, Mai, Phuong L., Manoukian, Siranoush, Mari, Véronique, Mebirouk, Noura, Meijers-Heijboer, Hanne E. J., Meindl, Alfons, Mensenkamp, Arjen R., Miller, Austin, Montagna, Marco, Mouret-Fourme, Emmanuelle, Mukherjee, Semanti, Mulligan, Anna Marie, Nathanson, Katherine L., Neuhausen, Susan L., Nevanlinna, Heli, Niederacher, Dieter, Nielsen, Finn Cilius, Nikitina-Zake, Liene, Noguès, Catherine, Olah, Edith, Olopade, Olufunmilayo I., Ong, Kai-Ren, O’Shaughnessy-Kirwan, Aoife, Osorio, Ana, Ott, Claus-Eric, Papi, Laura, Park, Sue K., Parsons, Michael T., Pedersen, Inge Sokilde, Peissel, Bernard, Peixoto, Ana, Peterlongo, Paolo, Pfeiler, Georg, Phillips, Kelly-Anne, Prajzendanc, Karolina, Pujana, Miquel Angel, Radice, Paolo, Ramser, Juliane, Ramus, Susan J., Rantala, Johanna, Rennert, Gad, Risch, Harvey A., Robson, Mark, Rønlund, Karina, Salani, Ritu, Schuster, Hélène, Senter, Leigha, Shah, Payal D., Sharma, Priyanka, Side, Lucy E., Singer, Christian F., Slavin, Thomas P., Soucy, Penny, Southey, Melissa C., Spurdle, Amanda B., Steinemann, Doris, Steinsnyder, Zoe, Stoppa-Lyonnet, Dominique, Sutter, Christian, Tan, Yen Yen, Teixeira, Manuel R., Teo, Soo Hwang, Thull, Darcy L., Tischkowitz, Marc, Tognazzo, Silvia, Toland, Amanda E., Trainer, Alison H., Tung, Nadine, Van Engelen, Klaartje, Van Rensburg, Elizabeth J., Vega, Ana, Vierstraete, Jeroen, Wagner, Gabriel, Walker, Lisa, Wang-Gohrke, Shan, Wappenschmidt, Barbara, Weitzel, Jeffrey N., Yadav, Siddhartha, Yang, Xin, Yannoukakos, Drakoulis, Zimbalatti, Dario, Offit, Kenneth, Thomassen, Mads, Couch, Fergus J., Schmutzler, Rita K., Simard, Jacques, Easton, Douglas F., Chenevix-Trench, Georgia, Antoniou, Antonis C., Antoniou, Antonis, Easton, Douglas, Side, Lucy, Spurdle, Amanda, Blok, Marinus, Hogervorst, Frans, Hooning, Maartje, Mensenkamp, Arjen, Meijers-Heijboer, Hanne, Rookus, Matti, and Engelen, Klaartje Van

Subjects
breast cancer, ovarian cancer, endocrine system diseases, BRCA1/2, article, genetics, PRS, 3. Good health
Abstract

Purpose: We assessed the associations between population-based polygenic risk scores (PRS) for breast (BC) or epithelial ovarian cancer (EOC) with cancer risks for BRCA1 and BRCA2 pathogenic variant carriers. Methods: Retrospective cohort data on 18,935 BRCA1 and 12,339 BRCA2 female pathogenic variant carriers of European ancestry were available. Three versions of a 313 single-nucleotide polymorphism (SNP) BC PRS were evaluated based on whether they predict overall, estrogen receptor (ER)–negative, or ER-positive BC, and two PRS for overall or high-grade serous EOC. Associations were validated in a prospective cohort. Results: The ER-negative PRS showed the strongest association with BC risk for BRCA1 carriers (hazard ratio [HR] per standard deviation = 1.29 [95% CI 1.25–1.33], P = 3×10−72). For BRCA2, the strongest association was with overall BC PRS (HR = 1.31 [95% CI 1.27–1.36], P = 7×10−50). HR estimates decreased significantly with age and there was evidence for differences in associations by predicted variant effects on protein expression. The HR estimates were smaller than general population estimates. The high-grade serous PRS yielded the strongest associations with EOC risk for BRCA1 (HR = 1.32 [95% CI 1.25–1.40], P = 3×10−22) and BRCA2 (HR = 1.44 [95% CI 1.30–1.60], P = 4×10−12) carriers. The associations in the prospective cohort were similar. Conclusion: Population-based PRS are strongly associated with BC and EOC risks for BRCA1/2 carriers and predict substantial absolute risk differences for women at PRS distribution extremes.

22. Characterization of an Italian Founder Mutation in the RING-Finger Domain of BRCA1.

Author

Caleca, Laura, Putignano, Anna Laura, Colombo, Mara, Congregati, Caterina, Sarkar, Mohosin, Magliery, Thomas J., Ripamonti, Carla B., Foglia, Claudia, Peissel, Bernard, Zaffaroni, Daniela, Manoukian, Siranoush, Tondini, Carlo, Barile, Monica, Pensotti, Valeria, Bernard, Loris, Papi, Laura, and Radice, Paolo

Subjects
*CANCER genetics, *ITALIANS, *GENETIC mutation, *REVERSE transcriptase polymerase chain reaction, *MESSENGER RNA, *GREEN fluorescent protein, *DISEASES
Abstract

The identification of founder mutations in cancer predisposing genes is important to improve risk assessment in geographically defined populations, since it may provide specific targets resulting in cost-effective genetic testing. Here, we report the characterization of the BRCA1 c.190T>C (p.Cys64Arg) mutation, mapped to the RING-finger domain coding region, that we detected in 43 hereditary breast/ovarian cancer (HBOC) families, for the large part originating from the province of Bergamo (Northern Italy). Haplotype analysis was performed in 21 families, and led to the identification of a shared haplotype extending over three BRCA1-associated marker loci (0.4 cM). Using the DMLE+2.2 software program and regional population demographic data, we were able to estimate the age of the mutation to vary between 3,100 and 3,350 years old. Functional characterization of the mutation was carried out at both transcript and protein level. Reverse transcriptase-PCR analysis on lymphoblastoid cells revealed expression of full length mRNA from the mutant allele. A green fluorescent protein (GFP)-fragment reassembly assay showed that the p.Cys64Arg substitution prevents the binding of the BRCA1 protein to the interacting protein BARD1, in a similar way as proven deleterious mutations in the RING-domain. Overall, 55 of 83 (66%) female mutation carriers had a diagnosis of breast and/or ovarian cancer. Our observations indicate that the BRCA1 c.190T>C is a pathogenic founder mutation present in the Italian population. Further analyses will evaluate whether screening for this mutation can be suggested as an effective strategy for the rapid identification of at-risk individuals in the Bergamo area. [ABSTRACT FROM AUTHOR]

Published
2014
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