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4. Genotype and clinical care correlations in craniosynostosis: Findings from a cohort of 630 Australian and New Zealand patients

Author

Roscioli, T., Elakis, G., Cox, T. C., Moon, D. J., Venselaar, H., Turner, A. M., Le, T., Hackett, E., Haan, E., Colley, A., Mowat, D., Worgan, L., Kirk, E. P., Sachdev, R., Thompson, E., Gabbett, M., McGaughran, J., Gibson, K., Gattas, M., Freckmann, M-L., Dixon, J., Hoefsloot, L., Field, M., Hackett, A., Kamien, B., Edwards, M., Adès, L. C., Collins, F. A., Wilson, M. J., Savarirayan, R., Tan, T. Y., Amor, D. J., McGIllivray, G., White, S. M., Glass, I. A., David, D. J., Anderson, P. J., Gianoutsos, M., and Buckley, M. F.

Published
2013
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9. Detection of cryptic pathogenic copy number variations and constitutional loss of heterozygosity using high resolution SNP microarray analysis in 117 patients referred for cytogenetic analysis and impact on clinical practice

Author

Bruno, D L, Ganesamoorthy, D, Schoumans, J, Bankier, A, Coman, D, Delatycki, M, Gardner, R J M, Hunter, M, James, P A, Kannu, P, McGillivray, G, Pachter, N, Peters, H, Rieubland, C, Savarirayan, R, Scheffer, I E, Sheffield, L, Tan, T, White, S M, Yeung, A, Bowman, Z, Ngo, C, Choy, K W, Cacheux, V, Wong, L, Amor, D J, and Slater, H R

Published
2009
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10. Genetic or other causation should not change the clinical diagnosis of cerebral palsy

Author

MacLennan, A. H. (Alastair H.), Lewis, S. (Sara), Moreno-De-Luca, A. (Andres), Fahey, M. (Michael), Leventer, R. J. (Richard J.), McIntyre, S. (Sarah), Ben-Pazi, H. (Hilla), Corbett, M. (Mark), Wang, X. (Xiaoyang), Baynam, G. (Gareth), Fehlings, D. (Darcy), Kurian, M. A. (Manju A.), Zhu, C. (Changlian), Himmelmann, K. (Kate), Smithers-Sheedy, H. (Hayley), Wilson, Y. (Yana), Ocaña, C. S. (Carlos Santos), van Eyk, C. (Clare), Badawi, N. (Nadia), Wintle, R. F. (Richard F.), Jacobsson, B. (Bo), Amor, D. J. (David J.), Mallard, C. (Carina), Pérez-Jurado, L. A. (Luis A.), Hallman, M. (Mikko), Rosenbaum, P. J. (Peter J.), Kruer, M. C. (Michael C.), Gecz, J. (Jozef), MacLennan, A. H. (Alastair H.), Lewis, S. (Sara), Moreno-De-Luca, A. (Andres), Fahey, M. (Michael), Leventer, R. J. (Richard J.), McIntyre, S. (Sarah), Ben-Pazi, H. (Hilla), Corbett, M. (Mark), Wang, X. (Xiaoyang), Baynam, G. (Gareth), Fehlings, D. (Darcy), Kurian, M. A. (Manju A.), Zhu, C. (Changlian), Himmelmann, K. (Kate), Smithers-Sheedy, H. (Hayley), Wilson, Y. (Yana), Ocaña, C. S. (Carlos Santos), van Eyk, C. (Clare), Badawi, N. (Nadia), Wintle, R. F. (Richard F.), Jacobsson, B. (Bo), Amor, D. J. (David J.), Mallard, C. (Carina), Pérez-Jurado, L. A. (Luis A.), Hallman, M. (Mikko), Rosenbaum, P. J. (Peter J.), Kruer, M. C. (Michael C.), and Gecz, J. (Jozef)

Abstract

High throughput sequencing is discovering many likely causative genetic variants in individuals with cerebral palsy. Some investigators have suggested that this changes the clinical diagnosis of cerebral palsy and that these individuals should be removed from this diagnostic category. Cerebral palsy is a neurodevelopmental disorder diagnosed on clinical signs, not etiology. All nonprogressive permanent disorders of movement and posture attributed to disturbances that occurred in the developing fetal and infant brain can be described as “cerebral palsy.” This definition of cerebral palsy should not be changed, whatever the cause. Reasons include stability, utility and accuracy of cerebral palsy registers, direct access to services, financial and social support specifically offered to families with cerebral palsy, and community understanding of the clinical diagnosis. Other neurodevelopmental disorders, for example, epilepsy, have not changed the diagnosis when genomic causes are found. The clinical diagnosis of cerebral palsy should remain, should prompt appropriate genetic studies and can subsequently be subclassified by etiology.

Published
2019

12. A craniosynostosis massively parallel sequencing panel study in 309 Australian and New Zealand patients: findings and recommendations

Author

Lee, E., Le, T., Zhu, Y., Elakis, G., Turner, A., Lo, W., Venselaar, H., Verrenkamp, C. -A., Snow, N., Mowat, D., Kirk, E. P., Sachdev, R., Smith, J., Brown, N. J., Wallis, M., Barnett, C., Mckenzie, F., Freckmann, M. -L., Collins, F., Chopra, M., Gregersen, N., Hayes, I., Rajagopalan, S., Tan, T. Y., Stark, Z., Savarirayan, R., Yeung, A., Ades, L., Gattas, M., Gibson, K., Gabbett, M., Amor, D. J., Lattanzi, Wanda, Boyd, S., Haan, E., Gianoutsos, M., Cox, T. C., Buckley, M. F., Roscioli, T., Lattanzi W. (ORCID:0000-0003-3092-4936), Lee, E., Le, T., Zhu, Y., Elakis, G., Turner, A., Lo, W., Venselaar, H., Verrenkamp, C. -A., Snow, N., Mowat, D., Kirk, E. P., Sachdev, R., Smith, J., Brown, N. J., Wallis, M., Barnett, C., Mckenzie, F., Freckmann, M. -L., Collins, F., Chopra, M., Gregersen, N., Hayes, I., Rajagopalan, S., Tan, T. Y., Stark, Z., Savarirayan, R., Yeung, A., Ades, L., Gattas, M., Gibson, K., Gabbett, M., Amor, D. J., Lattanzi, Wanda, Boyd, S., Haan, E., Gianoutsos, M., Cox, T. C., Buckley, M. F., Roscioli, T., and Lattanzi W. (ORCID:0000-0003-3092-4936)

Abstract

Purpose: The craniosynostoses are characterized by premature fusion of one or more cranial sutures. The relative contribution of previously reported genes to craniosynostosis in large cohorts is unclear. Here we report on the use of a massively parallel sequencing panel in individuals with craniosynostosis without a prior molecular diagnosis. Methods: A 20-gene panel was designed based on the genes’ association with craniosynostosis, and clinically validated through retrospective testing of an Australian and New Zealand cohort of 233 individuals with craniosynostosis in whom previous testing had not identified a causative variant within FGFR1-3 hot-spot regions or the TWIST1 gene. An additional 76 individuals were tested prospectively. Results: Pathogenic or likely pathogenic variants in non-FGFR genes were identified in 43 individuals, with diagnostic yields of 14% and 15% in retrospective and prospective cohorts, respectively. Variants were identified most frequently in TCF12 (N = 22) and EFNB1 (N = 8), typically in individuals with nonsyndromic coronal craniosynostosis or TWIST1-negative clinically suspected Saethre–Chotzen syndrome. Clinically significant variants were also identified in ALX4, EFNA4, ERF, and FGF10. Conclusion: These findings support the clinical utility of a massively parallel sequencing panel for craniosynostosis. TCF12 and EFNB1 should be included in genetic testing for nonsyndromic coronal craniosynostosis or clinically suspected Saethre–Chotzen syndrome.

Published
2018

13. Variants in ACTG2 underlie a substantial number of Australasian patients with primary chronic intestinal pseudo-obstruction

Author

Ravenscroft, G., primary, Pannell, S., additional, O'Grady, G., additional, Ong, R., additional, Ee, H. C., additional, Faiz, F., additional, Marns, L., additional, Goel, H., additional, Kumarasinghe, P., additional, Sollis, E., additional, Sivadorai, P., additional, Wilson, M., additional, Magoffin, A., additional, Nightingale, S., additional, Freckmann, M.-L., additional, Kirk, E. P., additional, Sachdev, R., additional, Lemberg, D. A., additional, Delatycki, M. B., additional, Kamm, M. A., additional, Basnayake, C., additional, Lamont, P. J., additional, Amor, D. J., additional, Jones, K., additional, Schilperoort, J., additional, Davis, M. R., additional, and Laing, N. G., additional

Published
2018
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14. Hemispheric cortical dysplasia secondary to a mosaic somatic mutation in MTOR

Author

Leventer, R. J., primary, Scerri, T., additional, Marsh, A. P. L., additional, Pope, K., additional, Gillies, G., additional, Maixner, W., additional, MacGregor, D., additional, Harvey, A. S., additional, Delatycki, M. B., additional, Amor, D. J., additional, Crino, P., additional, Bahlo, M., additional, and Lockhart, P. J., additional

Published
2015
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15. Genotype and clinical care correlations in craniosynostosis : Findings from a cohort of 630 Australian and New Zealand patients

Author

Roscioli, Tony, Elakis, George, Cox, Timothy C., Moon, David J., Venselaar, Hanka, Turner, Anne M., Le, Trang, Hackett, Emma, Haan, Eric, Colley, Alison, Mowat, David, Worgan, Lisa, Kirk, Edwin P., Sachdev, Rani, Thompson, Elizabeth, Gabbett, M., Mcgaughran, J., Gibson, K., Gattas, M., Freckmann, Mary‐Louise, Dixon, Joanne, Hoefsloot, Lies, Field, M., Hackett, Anna, Kamien, B., Edwards, M., Adès, L. C., Collins, F. A., Wilson, M. J., Savarirayan, Ravi, Tan, Tiong Yang, Amor, D. J., McGillivray, George, White, Susan, Glass, I. A., David, David John, Anderson, P. J., Gianoutsos, Mark, Buckley, M. F., Roscioli, Tony, Elakis, George, Cox, Timothy C., Moon, David J., Venselaar, Hanka, Turner, Anne M., Le, Trang, Hackett, Emma, Haan, Eric, Colley, Alison, Mowat, David, Worgan, Lisa, Kirk, Edwin P., Sachdev, Rani, Thompson, Elizabeth, Gabbett, M., Mcgaughran, J., Gibson, K., Gattas, M., Freckmann, Mary‐Louise, Dixon, Joanne, Hoefsloot, Lies, Field, M., Hackett, Anna, Kamien, B., Edwards, M., Adès, L. C., Collins, F. A., Wilson, M. J., Savarirayan, Ravi, Tan, Tiong Yang, Amor, D. J., McGillivray, George, White, Susan, Glass, I. A., David, David John, Anderson, P. J., Gianoutsos, Mark, and Buckley, M. F.

Abstract

Craniosynostosis is one of the most common craniofacial disorders encountered in clinical genetics practice, with an overall incidence of 1 in 2,500. Between 30% and 70% of syndromic craniosynostoses are caused by mutations in hotspots in the fibroblast growth factor receptor (FGFR) genes or in the TWIST1 gene with the difference in detection rates likely to be related to different study populations within craniofacial centers. Here we present results from molecular testing of an Australia and New Zealand cohort of 630 individuals with a diagnosis of craniosynostosis. Data were obtained by Sanger sequencing of FGFR1, FGFR2, and FGFR3 hotspot exons and the TWIST1 gene, as well as copy number detection of TWIST1. Of the 630 probands, there were 231 who had one of 80 distinct mutations (36%). Among the 80 mutations, 17 novel sequence variants were detected in three of the four genes screened. In addition to the proband cohort there were 96 individuals who underwent predictive or prenatal testing as part of family studies. Dysmorphic features consistent with the known FGFR1-3/TWIST1-associated syndromes were predictive for mutation detection. We also show a statistically significant association between splice site mutations in FGFR2 and a clinical diagnosis of Pfeiffer syndrome, more severe clinical phenotypes associated with FGFR2 exon 10 versus exon 8 mutations, and more frequent surgical procedures in the presence of a pathogenic mutation. Targeting gene hot spot areas for mutation analysis is a useful strategy to maximize the success of molecular diagnosis for individuals with craniosynostosis.

Published
2013

16. Relationships between age and epi-genotype of the FMR1 exon 1/intron 1 boundary are consistent with non-random X-chromosome inactivation in FM individuals, with the selection for the unmethylated state being most significant between birth and puberty

Author

Godler, D. E., primary, Inaba, Y., additional, Shi, E. Z., additional, Skinner, C., additional, Bui, Q. M., additional, Francis, D., additional, Amor, D. J., additional, Hopper, J. L., additional, Loesch, D. Z., additional, Hagerman, R. J., additional, Schwartz, C. E., additional, and Slater, H. R., additional

Published
2013
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18. Further molecular and clinical delineation of co-locating 17p13.3 microdeletions and microduplications that show distinctive phenotypes

Author

Bruno, D. L., primary, Anderlid, B. M., additional, Lindstrand, A., additional, van Ravenswaaij-Arts, C., additional, Ganesamoorthy, D., additional, Lundin, J., additional, Martin, C. L., additional, Douglas, J., additional, Nowak, C., additional, Adam, M. P., additional, Kooy, R. F., additional, Van der Aa, N., additional, Reyniers, E., additional, Vandeweyer, G., additional, Stolte-Dijkstra, I., additional, Dijkhuizen, T., additional, Yeung, A., additional, Delatycki, M., additional, Borgstrom, B., additional, Thelin, L., additional, Cardoso, C., additional, van Bon, B., additional, Pfundt, R., additional, de Vries, B. B. A., additional, Wallin, A., additional, Amor, D. J., additional, James, P. A., additional, Slater, H. R., additional, and Schoumans, J., additional

Published
2010
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22. Russell-Silver syndrome due to paternal H19/IGF2 hypomethylation in a patient conceived using intracytoplasmic sperm injection.

Author

Chopra, M., Amor, D. J., Sutton, L., Algar, E., and Mowat, D.

Subjects
*EPIGENESIS, *REPRODUCTIVE technology, *SPERMATOZOA, *MALE infertility, *SYNDROMES
Abstract

Epigenetic alterations at several maternal loci have been associated with imprinting disorders in children conceived using assisted reproductive technologies. To date, epimutations at paternal loci have been observed in the spermatozoa of infertile men, but there is little evidence of paternal epimutations in babies conceived using assisted reproductive treatment. This is a report of a female infant with classic Russell--Silver Syndrome (RSS) who was conceived using intracytoptasmic injection of spermatozoa obtained from testicular aspiration. Methylation studies revealed hypomethylation of the paternatty derived H19/IGF2 focus. As far as is known, this is the second assisted reproduction treatment-conceived patient with classic RSS and this epigenotype. This case provides further evidence that epimutations affecting paternal alleles might be associated with assisted reproductive treatment. [ABSTRACT FROM AUTHOR]

Published
2010
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23. Delineation of the clinical phenotype caused by de novo CLTC variants

Author

Sa, M. J. Nabais, Venselaar, H., Wiel, L., Trimouille, A., Lasseaux, E., Naudion, S., Lacombe, D., Piton, A., Vincent-Delorme, C., Zweier, C., André Reis, Trollmann, R., Ruiz, A., Gabau, E., Vetro, A., Guerrini, R., Bakhtiari, S., Kruer, M., Crompton, K., Amor, D. J., Bijlsma, E. K., Barakat, T. S., Dooren, M. F., Pfundt, R., Gilissen, C., Vries, B. B., Brouwer, A. P., and Koolen, D. A.

24. Germline variants in tumor suppressor FBXW7 lead to impaired ubiquitination and a neurodevelopmental syndrome

Author

Sarah E.M. Stephenson, Gregory Costain, Laura E.R. Blok, Michael A. Silk, Thanh Binh Nguyen, Xiaomin Dong, Dana E. Alhuzaimi, James J. Dowling, Susan Walker, Kimberly Amburgey, Robin Z. Hayeems, Lance H. Rodan, Marc A. Schwartz, Jonathan Picker, Sally A. Lynch, Aditi Gupta, Kristen J. Rasmussen, Lisa A. Schimmenti, Eric W. Klee, Zhiyv Niu, Katherine E. Agre, Ilana Chilton, Wendy K. Chung, Anya Revah-Politi, P.Y. Billie Au, Christopher Griffith, Melissa Racobaldo, Annick Raas-Rothschild, Bruria Ben Zeev, Ortal Barel, Sebastien Moutton, Fanny Morice-Picard, Virginie Carmignac, Jenny Cornaton, Nathalie Marle, Orrin Devinsky, Chandler Stimach, Stephanie Burns Wechsler, Bryan E. Hainline, Katie Sapp, Marjolaine Willems, Ange-line Bruel, Kerith-Rae Dias, Carey-Anne Evans, Tony Roscioli, Rani Sachdev, Suzanna E.L. Temple, Ying Zhu, Joshua J. Baker, Ingrid E. Scheffer, Fiona J. Gardiner, Amy L. Schneider, Alison M. Muir, Heather C. Mefford, Amy Crunk, Elizabeth M. Heise, Francisca Millan, Kristin G. Monaghan, Richard Person, Lindsay Rhodes, Sarah Richards, Ingrid M. Wentzensen, Benjamin Cogné, Bertrand Isidor, Mathilde Nizon, Marie Vincent, Thomas Besnard, Amelie Piton, Carlo Marcelis, Kohji Kato, Norihisa Koyama, Tomoo Ogi, Elaine Suk-Ying Goh, Christopher Richmond, David J. Amor, Jessica O. Boyce, Angela T. Morgan, Michael S. Hildebrand, Antony Kaspi, Melanie Bahlo, Rún Friðriksdóttir, Hildigunnur Katrínardóttir, Patrick Sulem, Kári Stefánsson, Hans Tómas Björnsson, Simone Mandelstam, Manuela Morleo, Milena Mariani, Marcello Scala, Andrea Accogli, Annalaura Torella, Valeria Capra, Mathew Wallis, Sandra Jansen, Quinten Waisfisz, Hugoline de Haan, Simon Sadedin, Sze Chern Lim, Susan M. White, David B. Ascher, Annette Schenck, Paul J. Lockhart, John Christodoulou, Tiong Yang Tan, Stephenson, S. E. M., Costain, G., Blok, L. E. R., Silk, M. A., Nguyen, T. B., Dong, X., Alhuzaimi, D. E., Dowling, J. J., Walker, S., Amburgey, K., Hayeems, R. Z., Rodan, L. H., Schwartz, M. A., Picker, J., Lynch, S. A., Gupta, A., Rasmussen, K. J., Schimmenti, L. A., Klee, E. W., Niu, Z., Agre, K. E., Chilton, I., Chung, W. K., Revah-Politi, A., Au, P. Y. B., Griffith, C., Racobaldo, M., Raas-Rothschild, A., Ben Zeev, B., Barel, O., Moutton, S., Morice-Picard, F., Carmignac, V., Cornaton, J., Marle, N., Devinsky, O., Stimach, C., Wechsler, S. B., Hainline, B. E., Sapp, K., Willems, M., Bruel, A. -L., Dias, K. -R., Evans, C. -A., Roscioli, T., Sachdev, R., Temple, S. E. L., Zhu, Y., Baker, J. J., Scheffer, I. E., Gardiner, F. J., Schneider, A. L., Muir, A. M., Mefford, H. C., Crunk, A., Heise, E. M., Millan, F., Monaghan, K. G., Person, R., Rhodes, L., Richards, S., Wentzensen, I. M., Cogne, B., Isidor, B., Nizon, M., Vincent, M., Besnard, T., Piton, A., Marcelis, C., Kato, K., Koyama, N., Ogi, T., Goh, E. S. -Y., Richmond, C., Amor, D. J., Boyce, J. O., Morgan, A. T., Hildebrand, M. S., Kaspi, A., Bahlo, M., Fridriksdottir, R., Katrinardottir, H., Sulem, P., Stefansson, K., Bjornsson, H. T., Mandelstam, S., Morleo, M., Mariani, M., Scala, M., Accogli, A., Torella, A., Capra, V., Wallis, M., Jansen, S., Weisfisz, Q., de Haan, H., Sadedin, S., Lim, S. C., White, S. M., Ascher, D. B., Schenck, A., Lockhart, P. J., Christodoulou, J., Tan, T. Y., and Human genetics

Subjects
F-box protein, Ubiquitin-Protein Ligase, Proteasome Endopeptidase Complex, F-Box-WD Repeat-Containing Protein 7, Ubiquitin-Protein Ligases, Neurodevelopment, global developmental delay, macrocephaly, Germ Cell, Article, All institutes and research themes of the Radboud University Medical Center, FBXW7, Neurodevelopmental Disorder, Genetics, Humans, hypotonia, Germ-Line Mutation, Genetics (clinical), Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], brain malformation, Ubiquitination, gastrointestinal issue, Germ Cells, intellectual disability, Neurodevelopmental Disorders, epilepsy, Human
Abstract

Neurodevelopmental disorders are highly heterogenous conditions resulting from abnormalities of brain architecture and/or function. FBXW7 (F-box and WD-repeat-domain-containing 7), a recognized developmental regulator and tumor suppressor, has been shown to regulate cell-cycle progression and cell growth and survival by targeting substrates including CYCLIN E1/2 and NOTCH for degradation via the ubiquitin proteasome system. We used a genotype-first approach and global data-sharing platforms to identify 35 individuals harboring de novo and inherited FBXW7 germline monoallelic chromosomal deletions and nonsense, frameshift, splice-site, and missense variants associated with a neurodevelopmental syndrome. The FBXW7 neurodevelopmental syndrome is distinguished by global developmental delay, borderline to severe intellectual disability, hypotonia, and gastrointestinal issues. Brain imaging detailed variable underlying structural abnormalities affecting the cerebellum, corpus collosum, and white matter. A crystal-structure model of FBXW7 predicted that missense variants were clustered at the substrate-binding surface of the WD40 domain and that these might reduce FBXW7 substrate binding affinity. Expression of recombinant FBXW7 missense variants in cultured cells demonstrated impaired CYCLIN E1 and CYCLIN E2 turnover. Pan-neuronal knockdown of the Drosophila ortholog, archipelago, impaired learning and neuronal function. Collectively, the data presented herein provide compelling evidence of an F-Box protein-related, phenotypically variable neurodevelopmental disorder associated with monoallelic variants in FBXW7.

Published
2022
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25. SPEN haploinsufficiency causes a neurodevelopmental disorder overlapping proximal 1p36 deletion syndrome with an episignature of X chromosomes in females

Author

Gilles Morin, Krista Bluske, Nathaniel H. Robin, Laurence Faivre, Manuela Priolo, Dihong Zhou, Evangeline Kurtz-Nelson, Tianyun Wang, Omar Sherbini, Daryl A. Scott, Karen Stals, Fabíola Paoli Monteiro, Kaifang Pang, Sara Cabet, Francesca Clementina Radio, Bruno Dallapiccola, Marjon van Slegtenhorst, Rachel K. Earl, Katheryn Grand, Maria Iascone, Alice S. Brooks, Angelo Selicorni, July K. Jean Cuevas, Paolo Gasparini, Maria Lisa Dentici, Marialetizia Motta, Britt-Marie Anderlid, Kristin Lindstrom, Berrin Monteleone, Andrea Ciolfi, Karin Weiss, Katharina Steindl, Kirsty McWalter, Rosalba Carrozzo, Ruben Boers, Helen Kingston, Kym M. Boycott, Bekim Sadikovic, Laura Schultz-Rogers, Evan E. Eichler, Laura A Cross, Alison M R Castle, Louisa Kalsner, Lucia Pedace, Marijke R. Wevers, John M. Graham, Jessica Sebastian, Antonio Vitobello, Gaetan Lesca, Alexander P.A. Stegmann, Suneeta Madan-Khetarpal, Tahsin Stefan Barakat, Abdallah F. Elias, Teresa Robert Finestra, Adeline Vanderver, Peter D. Turnpenny, Bregje W.M. van Bon, Aida Telegrafi, David J. Amor, Deepali N. Shinde, Pedro A. Sanchez-Lara, Lisenka E.L.M. Vissers, Adam Jackson, Rolph Pfundt, Alessandro Bruselles, Andres Hernandez-Garcia, Karin E. M. Diderich, Flavio Faletra, Dana H. Goodloe, Joanne Baez, Sarit Ravid, Romano Tenconi, Sarah L. Sawyer, Lynn Pais, Bronwyn Kerr, Joost Gribnau, Lauren Carter, Melissa T. Carter, Zhandong Liu, Jennifer L. Kemppainen, Jennifer MacKenzie, Jimmy Holder, Elke de Boer, Margaret Au, Taila Hartley, Carol J Saunders, Luciana Musante, Bert B.A. de Vries, Tania Vertemati Secches, Haley McConkey, Willow Sheehan, Francesca Pantaleoni, Caterina Zanus, Christophe Philippe, Chelsea Roadhouse, Stefania Lo Cicero, Sian Ellard, R. Tanner Hagelstrom, Megha Desai, Fernando Kok, Joset Pascal, Marco Tartaglia, Eric W. Klee, Eva Morava, Michael A. Levy, Peggy Kulch, Lyndon Gallacher, Erica L. Macke, Emilia Stellacci, Siddharth Banka, Kristin G. Monaghan, Anita Rauch, Meghan C. Towne, Kate Chandler, Clinical Genetics, Developmental Biology, Radio, F. C., Pang, K., Ciolfi, A., Levy, M. A., Hernandez-Garcia, A., Pedace, L., Pantaleoni, F., Liu, Z., de Boer, E., Jackson, A., Bruselles, A., Mcconkey, H., Stellacci, E., Lo Cicero, S., Motta, M., Carrozzo, R., Dentici, M. L., Mcwalter, K., Desai, M., Monaghan, K. G., Telegrafi, A., Philippe, C., Vitobello, A., Au, M., Grand, K., Sanchez-Lara, P. A., Baez, J., Lindstrom, K., Kulch, P., Sebastian, J., Madan-Khetarpal, S., Roadhouse, C., Mackenzie, J. J., Monteleone, B., Saunders, C. J., Jean Cuevas, J. K., Cross, L., Zhou, D., Hartley, T., Sawyer, S. L., Monteiro, F. P., Secches, T. V., Kok, F., Schultz-Rogers, L. E., Macke, E. L., Morava, E., Klee, E. W., Kemppainen, J., Iascone, M., Selicorni, A., Tenconi, R., Amor, D. J., Pais, L., Gallacher, L., Turnpenny, P. D., Stals, K., Ellard, S., Cabet, S., Lesca, G., Pascal, J., Steindl, K., Ravid, S., Weiss, K., Castle, A. M. R., Carter, M. T., Kalsner, L., de Vries, B. B. A., van Bon, B. W., Wevers, M. R., Pfundt, R., Stegmann, A. P. A., Kerr, B., Kingston, H. M., Chandler, K. E., Sheehan, W., Elias, A. F., Shinde, D. N., Towne, M. C., Robin, N. H., Goodloe, D., Vanderver, A., Sherbini, O., Bluske, K., Hagelstrom, R. T., Zanus, C., Faletra, F., Musante, L., Kurtz-Nelson, E. C., Earl, R. K., Anderlid, B. -M., Morin, G., van Slegtenhorst, M., Diderich, K. E. M., Brooks, A. S., Gribnau, J., Boers, R. G., Finestra, T. R., Carter, L. B., Rauch, A., Gasparini, P., Boycott, K. M., Barakat, T. S., Graham, J. M., Faivre, L., Banka, S., Wang, T., Eichler, E. E., Priolo, M., Dallapiccola, B., Vissers, L. E. L. M., Sadikovic, B., Scott, D. A., Holder, J. L., Tartaglia, M., MUMC+: DA KG Lab Centraal Lab (9), and RS: FHML non-thematic output

Subjects
0301 basic medicine, SHARP, Male, obesity, genotype-phenotype correlations, Autism Spectrum Disorder, PROTEIN, Chromosome Disorders, Haploinsufficiency, RNA-Binding Protein, PHENOTYPE CORRELATIONS, 1p36, distal 1p36 deletion syndrome, DNA methylome analysis, episignature, neurodevelopmental disorder, proximal 1p36 deletion syndrome, SPEN, X chromosome, Adolescent, Child, Child, Preschool, Chromosome Deletion, Chromosomes, Human, Pair 1, Chromosomes, Human, X, DNA Methylation, DNA-Binding Proteins, Epigenesis, Genetic, Female, Humans, Intellectual Disability, Neurodevelopmental Disorders, Phenotype, RNA-Binding Proteins, Young Adult, 0302 clinical medicine, Neurodevelopmental disorder, Neurodevelopmental Disorder, Intellectual disability, MOLECULAR CHARACTERIZATION, Genetics (clinical), Genetics, DNA methylome analysi, SPLIT-ENDS, Hypotonia, Autism spectrum disorder, MONOSOMY 1P36, Pair 1, medicine.symptom, Rare cancers Radboud Institute for Health Sciences [Radboudumc 9], Human, DNA-Binding Protein, Biology, genotype-phenotype correlation, Chromosomes, 03 medical and health sciences, Genetic, SDG 3 - Good Health and Well-being, Report, REVEALS, medicine, Epigenetics, Preschool, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], 1p36 deletion syndrome, IDENTIFICATION, MUTATIONS, medicine.disease, GENE, 030104 developmental biology, Chromosome Disorder, 030217 neurology & neurosurgery, Epigenesis
Abstract

Contains fulltext : 231702.pdf (Publisher’s version ) (Closed access) Deletion 1p36 (del1p36) syndrome is the most common human disorder resulting from a terminal autosomal deletion. This condition is molecularly and clinically heterogeneous. Deletions involving two non-overlapping regions, known as the distal (telomeric) and proximal (centromeric) critical regions, are sufficient to cause the majority of the recurrent clinical features, although with different facial features and dysmorphisms. SPEN encodes a transcriptional repressor commonly deleted in proximal del1p36 syndrome and is located centromeric to the proximal 1p36 critical region. Here, we used clinical data from 34 individuals with truncating variants in SPEN to define a neurodevelopmental disorder presenting with features that overlap considerably with those of proximal del1p36 syndrome. The clinical profile of this disease includes developmental delay/intellectual disability, autism spectrum disorder, anxiety, aggressive behavior, attention deficit disorder, hypotonia, brain and spine anomalies, congenital heart defects, high/narrow palate, facial dysmorphisms, and obesity/increased BMI, especially in females. SPEN also emerges as a relevant gene for del1p36 syndrome by co-expression analyses. Finally, we show that haploinsufficiency of SPEN is associated with a distinctive DNA methylation episignature of the X chromosome in affected females, providing further evidence of a specific contribution of the protein to the epigenetic control of this chromosome, and a paradigm of an X chromosome-specific episignature that classifies syndromic traits. We conclude that SPEN is required for multiple developmental processes and SPEN haploinsufficiency is a major contributor to a disorder associated with deletions centromeric to the previously established 1p36 critical regions.

Published
2021

26. Variants in the degron of AFF3 are associated with intellectual disability, mesomelic dysplasia, horseshoe kidney, and epileptic encephalopathy

Author

Rhonda E. Schnur, Fabio Sirchia, Olga Levchenko, Caroline Nava, Jane Juusola, Sarah Verheyen, Marketa Vlckova, Lindsay Rhodes, Gregory M. Cooper, Darina Prchalova, Thomas Courtin, Øystein L. Holla, David Kronn, Akemi J. Tanaka, E. Martina Bebin, Tara Funari, Miroslava Hancarova, Ennio Del Giudice, Nicolas Guex, Astrid Eisenkölbl, Dawn L. Earl, Toshiki Takenouchi, Ursula Gruber-Sedlmayr, Sedlácek Z, Sofia Douzgou, Heidelis A. Seebacher, Gerarda Cappuccio, Jasmin Blatterer, Anna Mikhaleva, Dian Donnai, Wendy K. Chung, Else Merckoll, Natasha J Brown, Elizabeth A. Sellars, Stefan Mundlos, Susan M. Hiatt, Giuliana Giannuzzi, Sinje Geuer, Giuseppina Vitiello, Séverine Lorrain, Alexandre Reymond, David J. Amor, Nicolas Chatron, Julien Delafontaine, Martine Doco, Kristian Tveten, Cecilie F. Rustad, Sylvain Pradervand, Delphine Héron, Alfredo Brusco, Elena L. Dadali, Nicola Brunetti-Pierri, Boris Keren, Yuri A. Zarate, Crystle Lee, Joel Charrow, Binnaz Yalcin, Heidi Taska-Tench, Elin Tønne, Tomoko Uehara, Alexander Lavrov, Jennifer Norman, Norine Voisin, Anna C.E. Hurst, Victoria R. Sanders, Ganka Douglas, Diana Johnson, Kenjiro Kosaki, Université de Lausanne = University of Lausanne (UNIL), Cooper Medical School of Rowan University [Camden] (CMSRU), Manchester University NHS Foundation Trust (MFT), University of Manchester [Manchester], HudsonAlpha Institute for Biotechnology [Huntsville, AL], Oslo University Hospital [Oslo], Victorian Clinical Genetics Services [Melbourne, VIC, Australia] (VCGS), Murdoch Children's Research Institute (MCRI), University of Melbourne, Seattle Children’s Hospital, Groupe de Recherche Clinique : Déficience Intellectuelle et Autisme [ CHU Pitié-Salpêtrière AP-HP] (GRC : DIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Research Centre for Medical Genetics [Moscow, Russia] (RCMG), Max Planck Institute for Molecular Genetics (MPIMG), Max-Planck-Gesellschaft, Medical University of Graz, Sheffield Children's NHS Foundation Trust, University of Arkansas at Little Rock, Charles University [Prague] (CU), University Hospital Motol [Prague], University of Alabama at Birmingham [ Birmingham] (UAB), Università degli studi di Torino = University of Turin (UNITO), Azienda Ospedalerio - Universitaria Città della Salute e della Scienza di Torino = University Hospital Città della Salute e della Scienza di Torino, University of Naples Federico II = Università degli studi di Napoli Federico II, Ann & Robert H. Lurie Children's Hospital of Chicago, Swiss Institute of Bioinformatics [Lausanne] (SIB), Hémostase et Remodelage Vasculaire Post-Ischémie (HERVI - EA 3801), Université de Reims Champagne-Ardenne (URCA), GeneDx [Gaithersburg, MD, USA], Johannes Kepler University Linz [Linz] (JKU), Telemark Hospital Trust [Skien, Norway], New York Medical College (NYMC), Integris Pediatric Neurology [Oklahoma City, OK, USA] (IPN), Institute for Maternal and Child Health - IRCCS 'Burlo Garofolo' [Trieste], Keio University School of Medicine [Tokyo, Japan], Columbia University [New York], Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Manchester Centre for Genomic Medicine [Manchester, UK] (MCGM), St Mary's Hospital Manchester-Manchester Academic Health Science Centre (MAHSC), University of Manchester [Manchester]-University of Manchester [Manchester]-Manchester University NHS Foundation Trust (MFT)-Faculty of Biology, Medicine and Health [Manchester, UK], Charité - UniversitätsMedizin = Charité - University Hospital [Berlin], Dupuis, Christine, Voisin, N., Schnur, R. E., Douzgou, S., Hiatt, S. M., Rustad, C. F., Brown, N. J., Earl, D. L., Keren, B., Levchenko, O., Geuer, S., Verheyen, S., Johnson, D., Zarate, Y. A., Hancarova, M., Amor, D. J., Bebin, E. M., Blatterer, J., Brusco, A., Cappuccio, G., Charrow, J., Chatron, N., Cooper, G. M., Courtin, T., Dadali, E., Delafontaine, J., Del Giudice, E., Doco, M., Douglas, G., Eisenkolbl, A., Funari, T., Giannuzzi, G., Gruber-Sedlmayr, U., Guex, N., Heron, D., Holla, O. L., Hurst, A. C. E., Juusola, J., Kronn, D., Lavrov, A., Lee, C., Lorrain, S., Merckoll, E., Mikhaleva, A., Norman, J., Pradervand, S., Prchalova, D., Rhodes, L., Sanders, V. R., Sedlacek, Z., Seebacher, H. A., Sellars, E. A., Sirchia, F., Takenouchi, T., Tanaka, A. J., Taska-Tench, H., Tonne, E., Tveten, K., Vitiello, G., Vlckova, M., Uehara, T., Nava, C., Yalcin, B., Kosaki, K., Donnai, D., Mundlos, S., Brunetti Pierri, N., Chung, W. K., and Reymond, A.

Subjects
Male, Models, Molecular, Hypertrichosis, [SDV]Life Sciences [q-bio], Mesomelic Dysplasia, Transcriptome, Mice, Gene Frequency, Missense mutation, Child, Zebrafish, Genetics (clinical), Genetics, Brain Diseases, 0303 health sciences, biology, Protein Stability, 030305 genetics & heredity, AFF3, AFF4, horseshoe kidney, intellectual disability, mesomelic dysplasia, Nuclear Proteins, Syndrome, Phenotype, Ubiquitin ligase, [SDV] Life Sciences [q-bio], Child, Preschool, Female, Transcriptional Elongation Factors, Adolescent, Mutation, Missense, Osteochondrodysplasias, Article, Evolution, Molecular, Young Adult, 03 medical and health sciences, medicine, Animals, Humans, Amino Acid Sequence, Fused Kidney, 030304 developmental biology, Epilepsy, Infant, Horseshoe kidney, biology.organism_classification, medicine.disease, biology.protein
Abstract

International audience; The ALF transcription factor paralogs, AFF1, AFF2, AFF3, and AFF4, are components of the transcriptional super elongation complex that regulates expression of genes involved in neurogenesis and development. We describe an autosomal dominant disorder associated with de novo missense variants in the degron of AFF3, a nine amino acid sequence important for its binding to ubiquitin ligase, or with de novo deletions of this region. The sixteen affected individuals we identified, along with two previously reported individuals, present with a recognizable pattern of anomalies, which we named KINSSHIP syndrome (KI for horseshoe kidney, NS for Nievergelt/Savarirayan type of mesomelic dysplasia, S for seizures, H for hypertrichosis, I for intellectual disability, and P for pulmonary involvement), partially overlapping the AFF4-associated CHOPS syndrome. Whereas homozygous Aff3 knockout mice display skeletal anomalies, kidney defects, brain malformations, and neurological anomalies, knockin animals modeling one of the microdeletions and the most common of the missense variants identified in affected individuals presented with lower mesomelic limb deformities like KINSSHIP-affected individuals and early lethality, respectively. Overexpression of AFF3 in zebrafish resulted in body axis anomalies, providing some support for the pathological effect of increased amount of AFF3. The only partial phenotypic overlap of AFF3-and AFF4-associated syndromes and the previously published transcriptome analyses of ALF transcription factors suggest that these factors are not redundant and each contributes uniquely to proper development.

Published
2021
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27. Authors' response to: Meeting the challenge of interpreting high-resolution single nucleotide polymorphism array data: does increased diagnostic power outweigh the dilemma of rare variants.

Author

McGillivray G, Bruno DL, Slater HR, and Amor DJ

Subjects
Female, Humans, Pregnancy, Oligonucleotide Array Sequence Analysis methods, Polymorphism, Single Nucleotide, Prenatal Diagnosis methods, Ultrasonography, Prenatal methods, Uniparental Disomy diagnosis
Published
2013
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28. Meeting the challenge of interpreting high-resolution single nucleotide polymorphism array data in prenatal diagnosis: does increased diagnostic power outweigh the dilemma of rare variants?

Author

Ganesamoorthy D, Bruno DL, McGillivray G, Norris F, White SM, Adroub S, Amor DJ, Yeung A, Oertel R, Pertile MD, Ngo C, Arvaj AR, Walker S, Charan P, Palma-Dias R, Woodrow N, and Slater HR

Subjects
Cell Culture Techniques, DNA Copy Number Variations, Female, Humans, Karyotyping, Pregnancy, Prospective Studies, Oligonucleotide Array Sequence Analysis methods, Polymorphism, Single Nucleotide, Prenatal Diagnosis methods, Ultrasonography, Prenatal methods, Uniparental Disomy diagnosis
Abstract

Objective: Several studies have already shown the superiority of chromosomal microarray analysis (CMA) compared with conventional karyotyping for prenatal investigation of fetal ultrasound abnormality. This study used very high-resolution single nucleotide polymorphism (SNP) arrays to determine the impact on detection rates of all clinical categories of copy number variations (CNVs), and address the issue of interpreting and communicating findings of uncertain or unknown clinical significance, which are to be expected at higher frequency when using very high-resolution CMA., Design: Prospective validation study., Setting: Tertiary clinical genetics centre., Population: Women referred for further investigation of fetal ultrasound anomaly., Methods: We prospectively tested 104 prenatal samples using both conventional karyotyping and high-resolution arrays., Main Outcome Measures: The detection rates for each clinical category of CNV., Results: Unequivocal pathogenic CNVs were found in six cases, including one with uniparental disomy (paternal UPD 14). A further four cases had a 'likely pathogenic' finding. Overall, CMA improved the detection of 'pathogenic' and 'likely pathogenic' abnormalities from 2.9% (3/104) to 9.6% (10/104). CNVs of 'unknown' clinical significance that presented interpretational difficulties beyond results from parental investigations were detected in 6.7% (7/104) of samples., Conclusions: Increased detection sensitivity appears to be the main benefit of high-resolution CMA. Despite this, in this cohort there was no significant benefit in terms of improving detection of small pathogenic CNVs. A potential disadvantage is the high detection rate of CNVs of 'unknown' clinical significance. These findings emphasise the importance of establishing an evidence-based policy for the interpretation and reporting of CNVs, and the need to provide appropriate pre- and post-test counselling., (© 2013 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2013 RCOG.)

Published
2013
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29. Pregnancies conceived using assisted reproductive technologies (ART) have low levels of pregnancy-associated plasma protein-A (PAPP-A) leading to a high rate of false-positive results in first trimester screening for Down syndrome.

Author

Amor DJ, Xu JX, Halliday JL, Francis I, Healy DL, Breheny S, Baker HW, and Jaques AM

Subjects
Adolescent, Adult, Amniocentesis, Chorionic Gonadotropin, beta Subunit, Human metabolism, Chorionic Villi Sampling, Down Syndrome epidemiology, False Positive Reactions, Female, Heart embryology, Humans, Middle Aged, Nuchal Translucency Measurement, Pregnancy, Pregnancy Trimester, First blood, Risk Factors, Young Adult, Biomarkers blood, Down Syndrome diagnosis, Pregnancy-Associated Plasma Protein-A metabolism, Prenatal Diagnosis standards, Reproductive Techniques, Assisted
Abstract

Background: First trimester screening (FTS) for Down syndrome combines measurement of nuchal translucency, free beta-human chorionic gonadotrophin and pregnancy-associated plasma protein-A (PAPP-A). The aim of this study was to undertake a detailed analysis of FTS results in singleton pregnancies conceived using assisted reproductive technologies (ART) and non-ART pregnancies., Methods: A record linkage study compared outcomes in 1739 ART-conceived and 50 253 naturally conceived pregnancies., Results: Overall, significantly lower PAPP-A levels were detected in ART pregnancies (0.83 multiples of median, MoM) than in controls (1.00 MoM) (t-test P < 0.001). This difference remained after excluding complicated pregnancies. Analysis of factors affecting PAPP-A levels suggested fresh compared with frozen embryo transfers and use of artificial cycles compared with natural cycles for frozen transfers were associated with lower values. The adjusted odds ratio (AdjOR) for receiving a false-positive result was 1.71 (95% CI 1.44-2.04; P < 0.001) for ART pregnancies compared with non-ART pregnancies, and this leads to a higher AdjOR (1.24, 95% CI 1.03-1.49; P = 0.02) for having a chorionic villous sampling (CVS) or amniocentesis., Conclusions: ART pregnancies have reduced FTS PAPP-A levels leading to an increased likelihood of receiving a false-positive result and having a CVS/amniocentesis. Lower PAPP-A may reflect impairment of early implantation with some forms of ART.

Published
2009
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30. Extending the phenotype of recurrent rearrangements of 16p11.2: deletions in mentally retarded patients without autism and in normal individuals.

Author

Bijlsma EK, Gijsbers AC, Schuurs-Hoeijmakers JH, van Haeringen A, Fransen van de Putte DE, Anderlid BM, Lundin J, Lapunzina P, Pérez Jurado LA, Delle Chiaie B, Loeys B, Menten B, Oostra A, Verhelst H, Amor DJ, Bruno DL, van Essen AJ, Hordijk R, Sikkema-Raddatz B, Verbruggen KT, Jongmans MC, Pfundt R, Reeser HM, Breuning MH, and Ruivenkamp CA

Subjects
Abnormalities, Multiple, Adolescent, Adult, Child, Child, Preschool, Comparative Genomic Hybridization, DNA Mutational Analysis, Family Health, Female, Genetic Testing, Humans, Infant, Learning Disabilities, Male, Speech Disorders, Young Adult, Autistic Disorder genetics, Chromosome Deletion, Chromosomes, Human, Pair 16, Intellectual Disability genetics
Abstract

Array CGH (comparative genomic hybridization) screening of large patient cohorts with mental retardation and/or multiple congenital anomalies (MR/MCA) has led to the identification of a number of new microdeletion and microduplication syndromes. Recently, a recurrent copy number variant (CNV) at chromosome 16p11.2 was reported to occur in up to 1% of autistic patients in three large autism studies. In the screening of 4284 patients with MR/MCA with various array platforms, we detected 22 individuals (14 index patients and 8 family members) with deletions in 16p11.2, which are genomically identical to those identified in the autism studies. Though some patients shared a facial resemblance and a tendency to overweight, there was no evidence for a recognizable phenotype. Autism was not the presenting feature in our series. The assembled evidence indicates that recurrent 16p11.2 deletions are associated with variable clinical outcome, most likely arising from haploinsufficiency of one or more genes. The phenotypical spectrum ranges from MR and/or MCA, autism, learning and speech problems, to a normal phenotype.

Published
2009
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31. Genetic factors in athetoid cerebral palsy.

Author

Amor DJ, Craig JE, Delatycki MB, and Reddihough D

Subjects
Adolescent, Adult, Child, Child, Preschool, Female, Humans, Male, Cerebral Palsy genetics
Abstract

Within the cerebral palsy syndromes, athetosis is most commonly causally associated with serious perinatal complications. Genetic factors are thought to play a lesser role, although the risk of recurrence in siblings has been suggested to be as high as 10%. We have conducted a clinical study of 22 subjects with a diagnosis of athetoid cerebral palsy and a review of the literature aiming to identify instances of familial recurrence of athetoid cerebral palsy. The birth history, family history, and previous investigations of subjects with athetoid cerebral palsy were studied and subjects were clinically examined for evidence of an underlying genetic etiology. Factors suggesting a genetic cause were specifically sought, such as advanced paternal age, progression of symptoms, and associated congenital abnormalities. No subjects in the study group had similarly affected relatives, and additional features suggesting a genetic cause were not observed. A literature search identified 16 instances of familial recurrence of athetoid cerebral palsy. Familial cases were typically associated with significant spasticity, microcephaly, intellectual disability, seizures, and a lack of history of birth asphyxia, and most could be explained by either autosomal-recessive or X-linked-recessive inheritance. The genetic contribution to athetoid cerebral palsy is small, with an overall risk of recurrence in siblings of about 1%. This risk is lower than previously suggested in the literature.

Published
2001
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32. Intermediate form of ablepharon-macrostomia syndrome with CNS abnormalities.

Author

Amor DJ and Savarirayan R

Subjects
Chromosome Banding, Developmental Disabilities genetics, Diagnosis, Differential, Epilepsy genetics, Eyelids abnormalities, Follow-Up Studies, Humans, Infant, Karyotyping, Macrostomia pathology, Male, Abnormalities, Multiple genetics, Central Nervous System abnormalities, Developmental Disabilities physiopathology, Macrostomia complications, Macrostomia genetics
Published
2001
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33. New variant of familial cerebellar ataxia with hypergonadotropic hypogonadism and sensorineural deafness.

Author

Amor DJ, Delatycki MB, Gardner RJ, and Storey E

Subjects
Adolescent, Adult, Atrophy, Cerebellum pathology, Family Health, Female, Gonadotropins blood, Humans, Male, Middle Aged, Cerebellar Ataxia genetics, Hearing Loss, Sensorineural genetics, Hypogonadism genetics
Abstract

Cerebellar ataxia and hypergonadotropic hypogonadism comprise a rare and presumably heterogeneous association. Inheritance in most cases appears to be autosomal recessive, and associated features include deafness, intellectual impairment, and neuropathy. Typically, onset of ataxia is in the first decade and hypogonadism results in primary amenorrhoea in females. We describe two sisters with a previously undescribed pattern of adult onset progressive cerebellar ataxia and secondary amenorrhoea due to hypergonadotropic hypogonadism. Sensorineural deafness with vestibular hypofunction and peripheral sensory impairment were also present, and intellect was normal. Onset of neurological symptoms was in the third decade, with secondary amenorrhoea occurring at the ages of 16 and 32 years, respectively. The association of ataxia and hypergonadotropic hypergonadism has been classified both as a variant of Holmes type ataxia and as a variant of Perrault syndrome, but we suggest the use of a separate category of ataxia with hypergonadotropic hypogonadism., (Copyright Wiley-Liss. Inc.)

Published
2001
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34. Situs inversus totalis and congenital hypoglossia.

Author

Amor DJ and Craig JE

Subjects
Female, Holoprosencephaly classification, Humans, Infant, Situs Inversus complications, Syndrome, Mandible abnormalities, Situs Inversus diagnosis, Tongue abnormalities
Abstract

Hypoglossia is a rare congenital malformation, occurring either as an isolated malformation or in association with other deformities, particularly limb defects. We describe a female infant with congenital hypoglossia, micrognathia and situs inversus. The main complications were airway compromise and feeding difficulties requiring tracheostomy and gastrostomy. Situs inversus and hypoglossia have been reported together on six previous occasions, with all cases being sporadic. Situs inversus-hypoglossia falls into a spectrum of aetiologically non-specific developmental field defects that includes the Aglossia-adactylia spectrum and the Agnathia-holoprosencephaly spectrum. Situs inversus-hypoglossia may represent a mild form of Agnathia-holoprosencephaly.

Published
2001
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35. Autosomal dominant inheritance of scapuloiliac dysostosis.

Author

Amor DJ, Savarirayan R, Bankier A, Jensen F, and Hauser SP

Subjects
Adult, Child, Female, Humans, Ilium diagnostic imaging, Infant, Intestinal Obstruction pathology, Male, Pelvis abnormalities, Pelvis diagnostic imaging, Radiography, Scapula diagnostic imaging, Dysostoses genetics, Genes, Dominant genetics, Ilium abnormalities, Scapula abnormalities
Published
2000

36. Polymicrogyria associated with scalp and limb defects: variant of Adams-Oliver syndrome.

Author

Amor DJ, Leventer RJ, Hayllar S, and Bankier A

Subjects
Brain diagnostic imaging, Child, Child, Preschool, Consanguinity, Female, Genes, Recessive, Humans, Infant, Infant, Newborn, Magnetic Resonance Imaging, Male, Scalp abnormalities, Syndrome, Tomography, X-Ray Computed, Abnormalities, Multiple diagnosis, Brain abnormalities, Limb Deformities, Congenital diagnosis
Abstract

We describe cortical malformations in two siblings who also had features of Adams-Oliver syndrome (AOS, MIM 100300). The parents were first cousins and showed no signs of either disorder, suggesting autosomal recessive inheritance. Psychomotor delay was present in both sibs, and cerebral imaging was indicative of polymicrogyria (PMG). One sib had aplasia cutis congenita of the scalp and transverse limb defects, and the other had short fingers and toes and also developed lymphedema of the right leg. CNS abnormalities and lymphatic abnormalities are rare manifestations of AOS, and we suggest that these sibs have a rare variant of AOS with probable recessive inheritance.

Published
2000
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37. New case of Cole-Carpenter syndrome.

Author

Amor DJ, Savarirayan R, Schneider AS, and Bankier A

Subjects
Craniofacial Abnormalities diagnostic imaging, Craniofacial Abnormalities pathology, Craniosynostoses diagnostic imaging, Craniosynostoses pathology, Eye Abnormalities, Female, Growth Disorders congenital, Humans, Infant, Infant, Newborn, Osteogenesis Imperfecta congenital, Osteogenesis Imperfecta diagnostic imaging, Radiography, Syndrome, Osteogenesis Imperfecta pathology
Abstract

We describe a girl with a severe progressive type of osteogenesis imperfecta, in association with multisutural craniosynostosis, growth failure, and craniofacial findings including ocular proptosis, marked frontal bossing, midface hypoplasia, and micrognathia. Collagen analysis was normal. These features are consistent with the diagnosis of Cole-Carpenter syndrome. This report provides further evidence for the existence of this rare genetic entity.

Published
2000
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38. Pseudotrisomy 13 syndrome in siblings.

Author

Amor DJ and Woods CG

Subjects
Fatal Outcome, Female, Fetal Death, Genes, Recessive, Humans, Infant, Newborn, Male, Nuclear Family, Polydactyly genetics, Chromosome Aberrations, Chromosome Disorders, Chromosomes, Human, Pair 13, Family Health, Holoprosencephaly genetics, Trisomy genetics
Abstract

We describe a brother and sister who both had holoprosencephaly, polydactyly, cardiac lesions and a normal karyotype. The parents were first cousins and a diagnosis of pseudotrisomy 13 syndrome is suggested. This report provides further support that the inheritance of pseudotrisomy 13 syndrome is autosomal recessive.

Published
2000
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39. High frequency of t(12;21) in childhood acute lymphoblastic leukemia detected by RT-PCR.

Author

Amor DJ, Algar EM, Slater HR, and Smith PJ

Subjects
Child, Child, Preschool, DNA Primers chemistry, Female, Gene Expression Regulation, Neoplastic, Humans, Male, Precursor Cell Lymphoblastic Leukemia-Lymphoma drug therapy, Precursor Cell Lymphoblastic Leukemia-Lymphoma pathology, Reverse Transcriptase Polymerase Chain Reaction, Treatment Outcome, Chromosomes, Human, Pair 12 genetics, Chromosomes, Human, Pair 21 genetics, DNA, Neoplasm analysis, Precursor Cell Lymphoblastic Leukemia-Lymphoma genetics, Translocation, Genetic genetics
Abstract

Recently, a new recurrent translocation, t(12;21)(p13;q22), has been identified in B-cell lineage acute lymphoblastic leukemia (ALL). The translocation results in the fusion of two known genes, ETV6/TEL(12p13) and AML1(21q22), both of which have been shown to be involved in other hematological malignancies. The t(12;21) is virtually undetectable by routine cytogenetics, but the chimeric transcript ETV6-AML1 has been detected in childhood ALL by molecular techniques in up to 36% of cases, making it the most common genetic abnormality in these patients. It has been shown to be associated with a B-precursor phenotype and an excellent prognosis. We tested 66 diagnostic pediatric ALL samples by reverse transcription polymerase chain reaction (RT-PCR) and found evidence of the t(12;21) in 22 (33%). None of these had previously been identified as harboring the t(12;21), although six had karyotypic abnormalities involving either 12p13 or 21q22. ETV6-AML1 expression defined a subgroup of patients characterised by an age of between two and 12 years, B-lineage immunophenotype and non-hyperdiploid DNA content. Our data further support the importance of molecular diagnostic methods in the identification of clinically distinct subgroups of patients with ALL.

Published
1998
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