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1. Mortality by age, gene and gender in carriers of pathogenic mismatch repair gene variants receiving surveillance for early cancer diagnosis and treatment: a report from the prospective Lynch syndrome database

Author

Dominguez-Valentin, Mev, Haupt, Saskia, Seppälä, Toni T., Sampson, Julian R., Sunde, Lone, Bernstein, Inge, Jenkins, Mark A., Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Balaguer, Francesc, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John-Paul, Sijmons, Rolf, Laghi, Luigi, Della Valle, Adriana, Heinimann, Karl, Dębniak, Tadeusz, Fruscio, Robert, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Katz, Lior H., Laish, Ido, Vainer, Elez, Vaccaro, Carlos, Carraro, Dirce Maria, Monahan, Kevin, Half, Elizabeth, Stakelum, Aine, Winter, Des, Kennelly, Rory, Gluck, Nathan, Sheth, Harsh, Abu-Freha, Naim, Greenblatt, Marc, Rossi, Benedito Mauro, Bohorquez, Mabel, Cavestro, Giulia Martina, Lino-Silva, Leonardo S., Horisberger, Karoline, Tibiletti, Maria Grazia, Nascimento, Ivana do, Thomas, Huw, Rossi, Norma Teresa, Apolinário da Silva, Leandro, Zaránd, Attila, Ruiz-Bañobre, Juan, Heuveline, Vincent, Mecklin, Jukka-Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Peltomäki, Päivi, Therkildsen, Christina, Madsen, Mia Gebauer, Burgdorf, Stefan Kobbelgaard, Hopper, John L., Win, Aung Ko, Haile, Robert W., Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Schröck, Evelin, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, Redler, Silke, Büttner, Reinhard, Weitz, Jürgen, Pineda, Marta, Duenas, Nuria, Vidal, Joan Brunet, Moreira, Leticia, Sánchez, Ariadna, Hovig, Eivind, Nakken, Sigve, Green, Kate, Lalloo, Fiona, Hill, James, Crosbie, Emma, Mints, Miriam, Goldberg, Yael, Tjandra, Douglas, ten Broeke, Sanne W., Kariv, Revital, Rosner, Guy, Advani, Suresh H., Thomas, Lidiya, Shah, Pankaj, Shah, Mithun, Neffa, Florencia, Esperon, Patricia, Pavicic, Walter, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia Alejandra, Moslein, Gabriela, and Moller, Pål

Published
2023
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2. Colorectal cancer incidences in Lynch syndrome: a comparison of results from the prospective lynch syndrome database and the international mismatch repair consortium

Author

Møller, Pål, Seppälä, Toni, Dowty, James G., Haupt, Saskia, Dominguez-Valentin, Mev, Sunde, Lone, Bernstein, Inge, Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John-Paul, Sijmons, Rolf, Laghi, Luigi, Valle, Adriana Della, Heinimann, Karl, Half, Elizabeth, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Scott, Rodney J., Katz, Lior, Laish, Ido, Vainer, Elez, Vaccaro, Carlos Alberto, Carraro, Dirce Maria, Gluck, Nathan, Abu-Freha, Naim, Stakelum, Aine, Kennelly, Rory, Winter, Des, Rossi, Benedito Mauro, Greenblatt, Marc, Bohorquez, Mabel, Sheth, Harsh, Tibiletti, Maria Grazia, Lino-Silva, Leonardo S., Horisberger, Karoline, Portenkirchner, Carmen, Nascimento, Ivana, Rossi, Norma Teresa, da Silva, Leandro Apolinário, Thomas, Huw, Zaránd, Attila, Mecklin, Jukka-Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepisto, Anna, Peltomäki, Päivi, Therkildsen, Christina, Lindberg, Lars Joachim, Thorlacius-Ussing, Ole, von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, de Vargas, Aída Falcón, Latchford, Andrew, Gerdes, Anne-Marie, Backman, Ann-Sofie, Guillén-Ponce, Carmen, Snyder, Carrie, Lautrup, Charlotte K., Amor, David, Palmero, Edenir, Stoffel, Elena, Duijkers, Floor, Hall, Michael J., Hampel, Heather, Williams, Heinric, Okkels, Henrik, Lubiński, Jan, Reece, Jeanette, Ngeow, Joanne, Guillem, Jose G., Arnold, Julie, Wadt, Karin, Monahan, Kevin, Senter, Leigha, Rasmussen, Lene J., van Hest, Liselotte P., Ricciardiello, Luigi, Kohonen-Corish, Maija R. J., Ligtenberg, Marjolijn J. L., Southey, Melissa, Aronson, Melyssa, Zahary, Mohd N., Samadder, N. Jewel, Poplawski, Nicola, Hoogerbrugge, Nicoline, Morrison, Patrick J., James, Paul, Lee, Grant, Chen-Shtoyerman, Rakefet, Ankathil, Ravindran, Pai, Rish, Ward, Robyn, Parry, Susan, Dębniak, Tadeusz, John, Thomas, van Overeem Hansen, Thomas, Caldés, Trinidad, Yamaguchi, Tatsuro, Barca-Tierno, Verónica, Garre, Pilar, Cavestro, Giulia Martina, Weitz, Jürgen, Redler, Silke, Büttner, Reinhard, Heuveline, Vincent, Hopper, John L., Win, Aung Ko, Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., ten Broeke, Sanne W., Hovig, Eivind, Nakken, Sigve, Pineda, Marta, Dueñas, Nuria, Brunet, Joan, Green, Kate, Lalloo, Fiona, Newton, Katie, Crosbie, Emma J., Mints, Miriam, Tjandra, Douglas, Neffa, Florencia, Esperon, Patricia, Kariv, Revital, Rosner, Guy, Pavicic, Walter Hernán, Kalfayan, Pablo, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia, Moslein, Gabriela, Ahadova, Aysel, Kloor, Matthias, Sampson, Julian R., and Jenkins, Mark A.

Published
2022
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3. Colorectal cancer incidences in Lynch syndrome: a comparison of results from the prospective lynch syndrome database and the international mismatch repair consortium

Author

Maller, Pål, Seppälä, Toni, Dowty, James G., Haupt, Saskia, Dominguez-Valentin, Mev, Sunde, Lone, Bernstein, Inge, Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John-Paul, Sijmons, Rolf, Laghi, Luigi, Valle, Adriana Della, Heinimann, Karl, Half, Elizabeth, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Scott, Rodney J., Katz, Lior, Laish, Ido, Vainer, Elez, Vaccaro, Carlos Alberto, Carraro, Dirce Maria, Gluck, Nathan, Abu-Freha, Naim, Stakelum, Aine, Kennelly, Rory, Winter, Des, Rossi, Benedito Mauro, Greenblatt, Marc, Bohorquez, Mabel, Sheth, Harsh, Tibiletti, Maria Grazia, Lino-Silva, Leonardo S., Horisberger, Karoline, Portenkirchner, Carmen, Nascimento, Ivana, Rossi, Norma Teresa, da Silva, Leandro Apolinário, Thomas, Huw, Zaránd, Attila, Mecklin, Jukka-Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepisto, Anna, Peltomäki, Päivi, Therkildsen, Christina, Lindberg, Lars Joachim, Thorlacius-Ussing, Ole, von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, de Vargas, Aída Falcón, Latchford, Andrew, Gerdes, Anne-Marie, Backman, Ann-Sofie, Guillén-Ponce, Carmen, Snyder, Carrie, Lautrup, Charlotte K., Amor, David, Palmero, Edenir, Stoffel, Elena, Duijkers, Floor, Hall, Michael J., Hampel, Heather, Williams, Heinric, Okkels, Henrik, LubiÅski, Jan, Reece, Jeanette, Ngeow, Joanne, Guillem, Jose G., Arnold, Julie, Wadt, Karin, Monahan, Kevin, Senter, Leigha, Rasmussen, Lene J., van Hest, Liselotte P., Ricciardiello, Luigi, Kohonen-Corish, Maija R. J., Ligtenberg, Marjolijn J. L., Southey, Melissa, Aronson, Melyssa, Zahary, Mohd N., Samadder, N. Jewel, Poplawski, Nicola, Hoogerbrugge, Nicoline, Morrison, Patrick J., James, Paul, Lee, Grant, Chen-Shtoyerman, Rakefet, Ankathil, Ravindran, Pai, Rish, Ward, Robyn, Parry, Susan, DÄbniak, Tadeusz, John, Thomas, van Overeem Hansen, Thomas, Caldés, Trinidad, Yamaguchi, Tatsuro, Barca-Tierno, Verónica, Garre, Pilar, Cavestro, Giulia Martina, Weitz, Jürgen, Redler, Silke, Büttner, Reinhard, Heuveline, Vincent, Hopper, John L., Win, Aung Ko, Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., ten Broeke, Sanne W., Hovig, Eivind, Nakken, Sigve, Pineda, Marta, Dueéas, Nuria, Brunet, Joan, Green, Kate, Lalloo, Fiona, Newton, Katie, Crosbie, Emma J., Mints, Miriam, Tjandra, Douglas, Neffa, Florencia, Esperon, Patricia, Kariv, Revital, Rosner, Guy, Pavicic, Walter Hernán, Kalfayan, Pablo, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia, Moslein, Gabriela, Ahadova, Aysel, Kloor, Matthias, Sampson, Julian R., and Jenkins, Mark A.

Subjects
EPUB (Standard) -- Comparative analysis, Colonoscopy -- Comparative analysis, Colorectal cancer -- Comparative analysis, Health
Abstract

Objective To compare colorectal cancer (CRC) incidences in carriers of pathogenic variants of the MMR genes in the PLSD and IMRC cohorts, of which only the former included mandatory colonoscopy surveillance for all participants. Methods CRC incidences were calculated in an intervention group comprising a cohort of confirmed carriers of pathogenic or likely pathogenic variants in mismatch repair genes (path_MMR) followed prospectively by the Prospective Lynch Syndrome Database (PLSD). All had colonoscopy surveillance, with polypectomy when polyps were identified. Comparison was made with a retrospective cohort reported by the International Mismatch Repair Consortium (IMRC). This comprised confirmed and inferred path_MMR carriers who were first- or second-degree relatives of Lynch syndrome probands. Results In the PLSD, 8,153 subjects had follow-up colonoscopy surveillance for a total of 67,604 years and 578 carriers had CRC diagnosed. Average cumulative incidences of CRC in path_MLH1 carriers at 70 years of age were 52% in males and 41% in females; for path_MSH2 50% and 39%; for path_MSH6 13% and 17% and for path_PMS2 11% and 8%. In contrast, in the IMRC cohort, corresponding cumulative incidences were 40% and 27%; 34% and 23%; 16% and 8% and 7% and 6%. Comparing just the European carriers in the two series gave similar findings. Numbers in the PLSD series did not allow comparisons of carriers from other continents separately. Cumulative incidences at 25 years were < 1% in all retrospective groups. Conclusions Prospectively observed CRC incidences (PLSD) in path_MLH1 and path_MSH2 carriers undergoing colonoscopy surveillance and polypectomy were higher than in the retrospective (IMRC) series, and were not reduced in path_MSH6 carriers. These findings were the opposite to those expected. CRC point incidence before 50 years of age was reduced in path_PMS2 carriers subjected to colonoscopy, but not significantly so. Keywords: Lynch Syndrome, Epidemiology, Prevention, Penetrance, Colorectal cancer, Segregation analysis, Prospective, Incidence, Over-diagnosis, Colonoscopy, Author(s): Pål Maller[sup.1], Toni Seppälä[sup.2,3,4], James G. Dowty[sup.5], Saskia Haupt[sup.6,7], Mev Dominguez-Valentin[sup.1], Lone Sunde[sup.8,9], Inge Bernstein[sup.10,11], Christoph Engel[sup.12], Stefan Aretz[sup.13], Maartje Nielsen[sup.14], Gabriel Capella[sup.15], Dafydd Gareth Evans[sup.16], John Burn[sup.17], Elke [...]

Published
2022
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4. Mortality by age, gene and gender in carriers of pathogenic mismatch repair gene variants receiving surveillance for early cancer diagnosis and treatment:a report from the prospective Lynch syndrome database

Author

Dominguez-Valentin, Mev, Haupt, Saskia, Seppälä, Toni T., Sampson, Julian R., Sunde, Lone, Bernstein, Inge, Jenkins, Mark A., Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Balaguer, Francesc, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John Paul, Sijmons, Rolf, Laghi, Luigi, Della Valle, Adriana, Heinimann, Karl, Dębniak, Tadeusz, Fruscio, Robert, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Katz, Lior H., Laish, Ido, Vainer, Elez, Vaccaro, Carlos, Carraro, Dirce Maria, Monahan, Kevin, Half, Elizabeth, Stakelum, Aine, Winter, Des, Kennelly, Rory, Gluck, Nathan, Sheth, Harsh, Abu-Freha, Naim, Greenblatt, Marc, Rossi, Benedito Mauro, Bohorquez, Mabel, Cavestro, Giulia Martina, Lino-Silva, Leonardo S., Horisberger, Karoline, Tibiletti, Maria Grazia, Nascimento, Ivana do, Thomas, Huw, Rossi, Norma Teresa, Apolinário da Silva, Leandro, Zaránd, Attila, Ruiz-Bañobre, Juan, Heuveline, Vincent, Mecklin, Jukka Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Peltomäki, Päivi, Therkildsen, Christina, Madsen, Mia Gebauer, Burgdorf, Stefan Kobbelgaard, Hopper, John L., Win, Aung Ko, Haile, Robert W., Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Schröck, Evelin, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, Redler, Silke, Büttner, Reinhard, Weitz, Jürgen, Pineda, Marta, Duenas, Nuria, Vidal, Joan Brunet, Moreira, Leticia, Sánchez, Ariadna, Hovig, Eivind, Nakken, Sigve, Green, Kate, Lalloo, Fiona, Hill, James, Crosbie, Emma, Mints, Miriam, Goldberg, Yael, Tjandra, Douglas, ten Broeke, Sanne W., Kariv, Revital, Rosner, Guy, Advani, Suresh H., Thomas, Lidiya, Shah, Pankaj, Shah, Mithun, Neffa, Florencia, Esperon, Patricia, Pavicic, Walter, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia Alejandra, Moslein, Gabriela, Moller, Pål, Dominguez-Valentin, Mev, Haupt, Saskia, Seppälä, Toni T., Sampson, Julian R., Sunde, Lone, Bernstein, Inge, Jenkins, Mark A., Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Balaguer, Francesc, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John Paul, Sijmons, Rolf, Laghi, Luigi, Della Valle, Adriana, Heinimann, Karl, Dębniak, Tadeusz, Fruscio, Robert, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Katz, Lior H., Laish, Ido, Vainer, Elez, Vaccaro, Carlos, Carraro, Dirce Maria, Monahan, Kevin, Half, Elizabeth, Stakelum, Aine, Winter, Des, Kennelly, Rory, Gluck, Nathan, Sheth, Harsh, Abu-Freha, Naim, Greenblatt, Marc, Rossi, Benedito Mauro, Bohorquez, Mabel, Cavestro, Giulia Martina, Lino-Silva, Leonardo S., Horisberger, Karoline, Tibiletti, Maria Grazia, Nascimento, Ivana do, Thomas, Huw, Rossi, Norma Teresa, Apolinário da Silva, Leandro, Zaránd, Attila, Ruiz-Bañobre, Juan, Heuveline, Vincent, Mecklin, Jukka Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepistö, Anna, Peltomäki, Päivi, Therkildsen, Christina, Madsen, Mia Gebauer, Burgdorf, Stefan Kobbelgaard, Hopper, John L., Win, Aung Ko, Haile, Robert W., Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Schröck, Evelin, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, Redler, Silke, Büttner, Reinhard, Weitz, Jürgen, Pineda, Marta, Duenas, Nuria, Vidal, Joan Brunet, Moreira, Leticia, Sánchez, Ariadna, Hovig, Eivind, Nakken, Sigve, Green, Kate, Lalloo, Fiona, Hill, James, Crosbie, Emma, Mints, Miriam, Goldberg, Yael, Tjandra, Douglas, ten Broeke, Sanne W., Kariv, Revital, Rosner, Guy, Advani, Suresh H., Thomas, Lidiya, Shah, Pankaj, Shah, Mithun, Neffa, Florencia, Esperon, Patricia, Pavicic, Walter, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia Alejandra, Moslein, Gabriela, and Moller, Pål

Abstract

Background The Prospective Lynch Syndrome Database (PLSD) collates information on carriers of pathogenic or likely pathogenic MMR variants (path_MMR) who are receiving medical follow-up, including colonoscopy surveillance, which aims to the achieve early diagnosis and treatment of cancers. Here we use the most recent PLSD cohort that is larger and has wider geographical representation than previous versions, allowing us to present mortality as an outcome, and median ages at cancer diagnoses for the first time. Methods The PLSD is a prospective observational study without a control group that was designed in 2012 and updated up to October 2022. Data for 8500 carriers of path_MMR variants from 25 countries were included, providing 71,713 years of follow up. Cumulative cancer incidences at 65 years of age were combined with 10-year crude survival following cancer, to derive estimates of mortality up to 75 years of age by organ, gene, and gender. Findings Gynaecological cancers were more frequent than colorectal cancers in path_MSH2, path_MSH6 and path_PMS2 carriers [cumulative incidence: 53.3%, 49.6% and 23.3% at 75 years, respectively]. Endometrial, colon and ovarian cancer had low mortality [8%, 13% and 15%, respectively] and prostate cancers were frequent in male path_MSH2 carriers [cumulative incidence: 39.7% at 75 years]. Pancreatic, brain, biliary tract and ureter and kidney and urinary bladder cancers were associated with high mortality [83%, 66%, 58%, 27%, and 29%, respectively]. Among path_MMR carriers undergoing colonoscopy surveillance, particularly path_MSH2 carriers, more deaths followed non-colorectal Lynch syndrome cancers than colorectal cancers. Interpretation In path_MMR carriers undergoing colonoscopy surveillance, non-colorectal Lynch syndrome cancers were associated with more deaths than were colorectal cancers. Reducing deaths from non-colorectal cancers presents a key challenge in contemporary medical ca, Background: The Prospective Lynch Syndrome Database (PLSD) collates information on carriers of pathogenic or likely pathogenic MMR variants (path_MMR) who are receiving medical follow-up, including colonoscopy surveillance, which aims to the achieve early diagnosis and treatment of cancers. Here we use the most recent PLSD cohort that is larger and has wider geographical representation than previous versions, allowing us to present mortality as an outcome, and median ages at cancer diagnoses for the first time. Methods: The PLSD is a prospective observational study without a control group that was designed in 2012 and updated up to October 2022. Data for 8500 carriers of path_MMR variants from 25 countries were included, providing 71,713 years of follow up. Cumulative cancer incidences at 65 years of age were combined with 10-year crude survival following cancer, to derive estimates of mortality up to 75 years of age by organ, gene, and gender. Findings: Gynaecological cancers were more frequent than colorectal cancers in path_MSH2, path_MSH6 and path_PMS2 carriers [cumulative incidence: 53.3%, 49.6% and 23.3% at 75 years, respectively]. Endometrial, colon and ovarian cancer had low mortality [8%, 13% and 15%, respectively] and prostate cancers were frequent in male path_MSH2 carriers [cumulative incidence: 39.7% at 75 years]. Pancreatic, brain, biliary tract and ureter and kidney and urinary bladder cancers were associated with high mortality [83%, 66%, 58%, 27%, and 29%, respectively]. Among path_MMR carriers undergoing colonoscopy surveillance, particularly path_MSH2 carriers, more deaths followed non-colorectal Lynch syndrome cancers than colorectal cancers. Interpretation: In path_MMR carriers undergoing colonoscopy surveillance, non-colorectal Lynch syndrome cancers were associated with more deaths than were colorectal cancers. Reducing deaths from non-colorectal cancers presents a key challenge in contemporary medical care in Lynch syndrome. Funding: We ac

Published
2023

5. Genetic Characterization in High-Risk Individuals from a Low-Resource City of Peru

Author

Zavaleta, Elizabeth, primary, Solis, Nelly, additional, Palacios, Maria Isabel, additional, Zevallos-Escobar, Liz Elva, additional, Corales, Edison Vasquez, additional, Bazo-Alvarez, Juan Carlos, additional, Dominguez-Barrera, Constantino, additional, Campos, Anthony, additional, Wernhoff, Patrik, additional, Ekstrøm, Per Olaf, additional, Møller, Pål, additional, Visnovska, Tina, additional, Hovig, Eivind, additional, Balazar-Palacios, Janina, additional, Alvarez-Valenzuela, Karin, additional, Nakken, Sigve, additional, and Dominguez-Valentin, Mev, additional

Published
2022
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6. Additional file 1 of Colorectal cancer incidences in Lynch syndrome: a comparison of results from the prospective lynch syndrome database and the international mismatch repair consortium

Author

Møller, Pål, Seppälä, Toni, Dowty, James G., Haupt, Saskia, Dominguez-Valentin, Mev, Sunde, Lone, Bernstein, Inge, Engel, Christoph, Aretz, Stefan, Nielsen, Maartje, Capella, Gabriel, Evans, Dafydd Gareth, Burn, John, Holinski-Feder, Elke, Bertario, Lucio, Bonanni, Bernardo, Lindblom, Annika, Levi, Zohar, Macrae, Finlay, Winship, Ingrid, Plazzer, John-Paul, Sijmons, Rolf, Laghi, Luigi, Valle, Adriana Della, Heinimann, Karl, Half, Elizabeth, Lopez-Koestner, Francisco, Alvarez-Valenzuela, Karin, Scott, Rodney J., Katz, Lior, Laish, Ido, Vainer, Elez, Vaccaro, Carlos Alberto, Carraro, Dirce Maria, Gluck, Nathan, Abu-Freha, Naim, Stakelum, Aine, Kennelly, Rory, Winter, Des, Rossi, Benedito Mauro, Greenblatt, Marc, Bohorquez, Mabel, Sheth, Harsh, Tibiletti, Maria Grazia, Lino-Silva, Leonardo S., Horisberger, Karoline, Portenkirchner, Carmen, Nascimento, Ivana, Rossi, Norma Teresa, da Silva, Leandro Apolinário, Thomas, Huw, Zaránd, Attila, Mecklin, Jukka-Pekka, Pylvänäinen, Kirsi, Renkonen-Sinisalo, Laura, Lepisto, Anna, Peltomäki, Päivi, Therkildsen, Christina, Lindberg, Lars Joachim, Thorlacius-Ussing, Ole, von Knebel Doeberitz, Magnus, Loeffler, Markus, Rahner, Nils, Steinke-Lange, Verena, Schmiegel, Wolff, Vangala, Deepak, Perne, Claudia, Hüneburg, Robert, de Vargas, Aída Falcón, Latchford, Andrew, Gerdes, Anne-Marie, Backman, Ann-Sofie, Guillén-Ponce, Carmen, Snyder, Carrie, Lautrup, Charlotte K., Amor, David, Palmero, Edenir, Stoffel, Elena, Duijkers, Floor, Hall, Michael J., Hampel, Heather, Williams, Heinric, Okkels, Henrik, Lubiński, Jan, Reece, Jeanette, Ngeow, Joanne, Guillem, Jose G., Arnold, Julie, Wadt, Karin, Monahan, Kevin, Senter, Leigha, Rasmussen, Lene J., van Hest, Liselotte P., Ricciardiello, Luigi, Kohonen-Corish, Maija R. J., Ligtenberg, Marjolijn J. L., Southey, Melissa, Aronson, Melyssa, Zahary, Mohd N., Samadder, N. Jewel, Poplawski, Nicola, Hoogerbrugge, Nicoline, Morrison, Patrick J., James, Paul, Lee, Grant, Chen-Shtoyerman, Rakefet, Ankathil, Ravindran, Pai, Rish, Ward, Robyn, Parry, Susan, Dębniak, Tadeusz, John, Thomas, van Overeem Hansen, Thomas, Caldés, Trinidad, Yamaguchi, Tatsuro, Barca-Tierno, Verónica, Garre, Pilar, Cavestro, Giulia Martina, Weitz, Jürgen, Redler, Silke, Büttner, Reinhard, Heuveline, Vincent, Hopper, John L., Win, Aung Ko, Lindor, Noralane, Gallinger, Steven, Le Marchand, Loïc, Newcomb, Polly A., Figueiredo, Jane, Buchanan, Daniel D., Thibodeau, Stephen N., ten Broeke, Sanne W., Hovig, Eivind, Nakken, Sigve, Pineda, Marta, Dueñas, Nuria, Brunet, Joan, Green, Kate, Lalloo, Fiona, Newton, Katie, Crosbie, Emma J., Mints, Miriam, Tjandra, Douglas, Neffa, Florencia, Esperon, Patricia, Kariv, Revital, Rosner, Guy, Pavicic, Walter Hernán, Kalfayan, Pablo, Torrezan, Giovana Tardin, Bassaneze, Thiago, Martin, Claudia, Moslein, Gabriela, Ahadova, Aysel, Kloor, Matthias, Sampson, Julian R., and Jenkins, Mark A.

Abstract

Additional file 1.

Published
2022
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7. Identificación de las alteraciónes genéticas y genómicas presentes en los tumores desmoide, comparación con el cáncer correctal

Author

Alvarez-Valenzuela, Karin Pamela, Carvallo De S Q, María del Pilar, López-K, Francisco, and Pontificia Universidad Católica de Chile

Abstract

La Poliposis Adenomatosa Familiar (P AF) es uno de los principales síndromes hereditarios de predisposición al desarrollo de cáncer colorrectal, causada por mutaciones en la línea germinal (heredada) en el gen supresor de tumores APC (5q22-21). Estos pacientes, además de cáncer colorrectal, pueden desarrollar una variedad de manifestaciones extracolónicas en diferentes tejidos y órganos que incluye los pólipos en el estómago e intestino delgado, anomalías dentales, cáncer de tiroides y tumores desmoide, entre otros. Entre estas manifestaciones, los tumores desmoide son los más importantes, ya que éstos constituyen la segunda causa de muerte en estos pacientes. Los tumores desmoide se caracterizan por la proliferación descontrolada de fibroblastos, localmente invasivos, con una alta tasa de recurrencia y sin un tratamiento efectivo a la fecha. Aunque el crecimiento de estos tumores puede llegar a ser muy agresivo, éstos son considerados como tumores benignos, debido a que no son capaces de diseminar a distancia (metástasis). De esta forma, los tumores desmoide pueden transformarse en un desafío clínico importante, debido a lo cual una caracterización genético molecular es de alta relevancia para mejorar el conocimiento de la o las vías genéticas involucradas en su desarrollo y para la creación de futuras aproximaciones terapéuticas. La etiología de los tumores desmoide en pacientes con P AF ha sido relacionada con mutaciones en el gen APC, debido a que entre el 1 O y 19% de los pacientes P AF desarrolla estos tumores. El conocimiento molecular involucrado en la progresión de estos tumores es escaso; existen pocos trabajos que analicen alteraciones genéticas en genes específicos. A nivel genómico, estos tumores han sido estudiados principalmente mediante cariotipo, los cuales han demostrado trisomías de los cromosomas 8 y 20. Tres estudios genómicos mediante Hibridación Genómica Comparativa en cromosomas metafásicos o con sondas BACs, han demostrado que alrededor del25-35% de los tumores presenta alteraciones en los cromosomas lq, 7p, 9p y 20, producto de ganancias, y en los cromosomas 6, 6q, 5q, 4q y 13q, que constituyen pérdidas. Distinto es el caso del cáncer colorrectal, para el cual existe un amplio conocimiento sobre las vías genéticas involucradas. Un modelo genético descrito por Fearon y Vogelstein en 1990, muestra los principales cambios genéticos que guían a la transformación del cáncer colorrectal. Estos cambios genéticos involucran a APC (5q22-21), K-ras (12p), DCC (18q) y P53 (17p ). Los loci APC, DCC y P53 corresponden a genes supresores de tumores, afectados por deleciones genómicas, en tanto, que mutaciones puntuales en K-ras conllevan a una activación constitutiva de esta proteína. Dado que los pacientes con P AF con mutaciones en el gen APC pueden desarrollar ambos tipos de tumores, nos propusimos comparar las alteraciones genéticas y genómicas presentes en los tumores desmoide con aquellas descritas para los tumores colorrectales. Nos planteamos como hipótesis que los tumores desmoide de pacientes con Poliposis Adenomatosa Familiar, presentan diferentes alteraciones genéticas y genómicas de aquellas descritas en el desarrollo del cáncer colorrectal. El objetivo general fue determinar alteraciones en genes específicos descritos para la P AF y definir las alteraciones genómicas presentes en los tumores desmoide, comparándolas con aquellas descritas en el cáncer colorrectal. Para cumplir con este objetivo se seleccionaron seis pacientes pertenecientes a cinco familias con mutación germinal en el gen APC identificada, todos estos pacientes desarrollaron tumores desmoide además de la poliposis colónica (tumores colorrectales). Desde estos seis pacientes se colectaron biopsias de los tumores desmoide, a partir de las cuales se extrajo el DNA genómico tumoral. En primer lugar, se evaluó el mecanismo de inactivación del alelo normal del gen APC en el tumor desmoide de cada paciente, a través de deleción genómica o mutación somática. La deleción fue estudiada mediante el uso de cuatro marcadores genéticos STR (short tandem repeat) aledaños al gen APC, o bien, mediante un marcador alélico interno (mutación de la línea germinal). Este último marcador además nos permitirá discriminar entre los alelas normal y mutado. Las mutaciones somáticas fueron estudiadas en los exones 1-14 y fragmentos C-I del exón 15 del gen APC mediante el análisis de SSCP (single strand conformation polymorphism). Además, en los tumores desmoide se estudió la expresión de ~-catenina mediante inmunohistoquímica. En segundo lugar, se evaluaron deleciones genómicas del gen p53 y locus DCC mediante el uso de marcadores STR aledaños a estas regiones, además de mutaciones puntuales somáticas en los codones 12, 13 y 61 en el protoncogen K-ras mediante secuenciación de DNA. En tercer lugar, se evaluaron alteraciones genómicas en los tumores desmoide mediante la técnica de hibridación genómica comparativa en microarreglos de DNA (array-CGH). Nuestros hallazgos sobre la inactivación somática del gen APC, deleción o mutación, en tumores desmoide asociados a P AF demostró que dos tumores presentan pérdida del alelo normal, dos tumores presentan pérdida del alelo mutado y finalmente en dos tumores desconocemos el mecanismo involucrado en la inactivación de la copia normal de APC. La pérdida de la copia normal concuerda con lo descrito por la hipótesis de del "segundo evento" de Knudson, en tanto que la pérdida del alelo mutado constituyó un hallazgo no esperado. Esto último no refleja la inactivación del alelo normal, lo cual sugiere la existencia de otro mecanismo que inactiva la copia normal del gen APC, que podría corresponder a un "tercer evento" en APC, distinto a lo descrito por Knudson. El estudio de 0-catenina mediante inmunohistoquímica sugiere una actividad anormal de la proteína APC en los seis tumores, los cuales mostraron una expresión heterogénea entre ellos. El estudio de los genes candidatos del modelo de Vogelstein, K-ras, DCC y P53, reveló que éstos no se encuentran mutados en los tumores desmoide. Estos hallazgos sugieren que los genes que participan en el desarrollo de los tumores desmoide son diferentes de aquellos involucrados en el desarrollo de los tumores colorrectales. Por otra parte, identificamos un gran número de alteraciones cromosomales previamente no publicados en los tumores desmoide. Dentro de estas alteraciones, encontramos una deleción presente en el 100% de los tumores localizada en el cromosoma 2q32.1, además de ganancias en las regiones cromosómicas 3p21.31-p21.1, 6p22.2, 6p21.33, 6p21.1 , llq12.3, 14qll.2, 16p13.3, 17q25.3 y 19q13.42-q13.43 en el 83% de los tumores. Estas regiones incluyen un total de 572 genes candidatos, a partir de los cuales se pueden escoger genes supresores de tumores o protoncogenes que sean relevantes en el desarrollo de los tumores desmoide. La comparación de los perfiles genómicos obtenidos en los tumores desmoide con aquellos descritos en la literatura para los adenomas y el cáncer colorrectal demostró diferencias entre los tipos de alteraciones, sugiriendo que los mecanismos de progresión de ambos tumores es diferente. El agrupamiento jerárquico de los perfiles genómicos de los tumores desmoide reveló tres grupos que se diferencian por el número de alteraciones cromosomales identificadas. Estos grupos correlacionan con la localización del tumor y con la expresión de 0-catenina en el tumor. En conclusión, a pesar de que el desarrollo de los tumores desmoide en pacientes P AF comparten el mismo gen de predisposición que el cáncer colorrectal, los tumores desmoide presentan diferencias claras con los tumores colorrectales, indicando que los principales mecamsmos descritos para el cáncer colorrectal no son compartidos con los tumores desmoide. Doctor en Ciencias Biológicas Mención en Biología Celular y Molecular TERMINADA PFCHA-Becas 175p. PFCHA-Becas

Published
2011

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