KAT6A Syndrome: genotype-phenotype correlation in 76 patients with pathogenic KAT6A variants
| Autor: | Kennedy, Joanna, Goudie, David, Blair, Edward, Chandler, Kate, Joss, Shelagh, McKay, Victoria, Green, Andrew, Armstrong, Ruth, Lees, Melissa, Kamien, Benjamin, Hopper, Bruce, Tan, Tiong Yang, Yap, Patrick, Stark, Zornitza, Okamoto, Nobuhiko, Miyake, Noriko, Matsumoto, Naomichi, Macnamara, Ellen, Murphy, Jennifer L, McCormick, Elizabeth, Hakonarson, Hakon, Falk, Marni J, Li, Dong, Blackburn, Patrick, Klee, Eric, Babovic-Vuksanovic, Dusica, Schelley, Susan, Hudgins, Louanne, Kant, Sarina, Isidor, Bertrand, Cogne, Benjamin, Bradbury, Kimberley, Williams, Mark, Patel, Chirag, Heussler, Helen, Duff-Farrier, Celia, Lakeman, Phillis, Scurr, Ingrid, Kini, Usha, Elting, Mariet, Reijnders, Margot, Schuurs-Hoeijmakers, Janneke, Wafik, Mohamed, Blomhoff, Anne, Ruivenkamp, Claudia AL, Nibbeling, Esther, Dingemans, Alexander JM, Douine, Emilie D, Nelson, Stanley F, DDD Study, Hempel, Maja, Bierhals, Tatjana, Lessel, Davor, Johannsen, Jessika, Arboleda, Valerie A, Newbury-Ecob, Ruth |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male KAT6A syndrome Genotype Adolescent Developmental Disabilities Intellectual and Developmental Disabilities (IDD) Clinical Sciences Young Adult genetic diagnosis Rare Diseases Clinical Research Intellectual Disability chromatin modifiers Genetics Humans Protein Isoforms 2.1 Biological and endogenous factors Exome Aetiology Child Preschool Genetic Association Studies DDD Study Histone Acetyltransferases Pediatric Genetics & Heredity Prevention Infant Brain Disorders Phenotype intellectual disability Mutation Microcephaly Female Chromosome Deletion Digestive Diseases phenotypic spectrum |
| Zdroj: | Genetics in medicine : official journal of the American College of Medical Genetics, vol 21, iss 4 |
| Popis: | PurposePathogenic variantsin KAT6A have recently been identified as a cause of syndromic developmental delay. Within 2 years, the number of patients identified with pathogenic KAT6A variants has rapidly expanded and the full extent and variability of the clinical phenotype has not been reported.MethodsWe obtained data for patients with KAT6A pathogenic variants through three sources: treating clinicians, an online family survey distributed through social media, and a literature review.ResultsWe identified 52 unreported cases, bringing the total number of published cases to 76. Our results expand the genotypic spectrum of pathogenic variants to include missense and splicing mutations. We functionally validated a pathogenic splice-site variant and identified a likely hotspot location for de novo missense variants. The majority of clinical features in KAT6A syndrome have highly variable penetrance. For core features such as intellectual disability, speech delay, microcephaly, cardiac anomalies, and gastrointestinal complications, genotype- phenotype correlations show that late-truncating pathogenic variants (exons 16-17) are significantly more prevalent. We highlight novel associations, including an increased risk of gastrointestinal obstruction.ConclusionOur data expand the genotypic and phenotypic spectrum for individuals with genetic pathogenic variants in KAT6A and we outline appropriate clinical management. |
| Databáze: | OpenAIRE |
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