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Title: | Genomic imbalances defining novel intellectual disability associated loci | Authors: | Lopes, Fátima Torres, Fátima Soares, Gabriela Barbosa, Mafalda Silva, João Duque, Frederico Rocha, Miguel Sá, Joaquim Oliveira, Guiomar Sá, Maria João Temudo, Teresa Sousa, Susana Marques, Carla Lopes, Sofia Maia Gomes, Catarina Barros, Gisela Jorge, Arminda Rocha, Felisbela Martins, Cecília Mesquita, Sandra Loureiro, Susana Cardoso, Elisa Maria Cálix, Maria José Dias, Andreia Martins, Cristina Mota, Céu R. Antunes, Diana Dupont, Juliette Figueiredo, Sara Figueiroa, Sónia Gama-de-Sousa, Susana Cruz, Sara Sampaio, Adriana Eijk, Paul Weiss, Marjan M. Ylstra, Bauke Rendeiro, Paula Tavares, Purificação Reis-Lima, Margarida Pinto-Basto, Jorge Fortuna, Ana Maria Maciel, Patrícia |
Keywords: | CNVs; CUL4B overexpression; Genotype-phenotype correlation; Neurodevelopment | Issue Date: | 5-Jul-2019 | Publisher: | Springer Nature | Project: | PIC/IC/83026/2007 PIC/IC/83013/2007 SFRH/BD/90167/2012 |
Serial title, monograph or event: | Orphanet Journal of Rare Diseases | Volume: | 14 | Issue: | 1 | Abstract: | Background: High resolution genome-wide copy number analysis, routinely used in clinical diagnosis for several years, retrieves new and extremely rare copy number variations (CNVs) that provide novel candidate genes contributing to disease etiology. The aim of this work was to identify novel genetic causes of neurodevelopmental disease, inferred from CNVs detected by array comparative hybridization (aCGH), in a cohort of 325 Portuguese patients with intellectual disability (ID). Results: We have detected CNVs in 30.1% of the patients, of which 5.2% corresponded to novel likely pathogenic CNVs. For these 11 rare CNVs (which encompass novel ID candidate genes), we identified those most likely to be relevant, and established genotype-phenotype correlations based on detailed clinical assessment. In the case of duplications, we performed expression analysis to assess the impact of the rearrangement. Interestingly, these novel candidate genes belong to known ID-related pathways. Within the 8% of patients with CNVs in known pathogenic loci, the majority had a clinical presentation fitting the phenotype(s) described in the literature, with a few interesting exceptions that are discussed. Conclusions: Identification of such rare CNVs (some of which reported for the first time in ID patients/families) contributes to our understanding of the etiology of ID and for the ever-improving diagnosis of this group of patients. | URI: | https://hdl.handle.net/10316/107198 | ISSN: | 1750-1172 | DOI: | 10.1186/s13023-019-1135-0 | Rights: | openAccess |
Appears in Collections: | FMUC Medicina - Artigos em Revistas Internacionais I&D IBILI - Artigos em Revistas Internacionais |
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