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Biallelic Variants In Pcdhgc4 Cause A Novel Neurodevelopmental Syndrome With Progressive Microcephaly, Seizures, And Joint Anomalies, Maria Iqbal, Reza Maroofian, Büşranur Çavdarlı, Florence Riccardi, Michael Field, Siddharth Banka, Dalal K. Bubshait, Yun Li, Jozef Hertecant, Shahid Mahmood Baig
Biallelic Variants In Pcdhgc4 Cause A Novel Neurodevelopmental Syndrome With Progressive Microcephaly, Seizures, And Joint Anomalies, Maria Iqbal, Reza Maroofian, Büşranur Çavdarlı, Florence Riccardi, Michael Field, Siddharth Banka, Dalal K. Bubshait, Yun Li, Jozef Hertecant, Shahid Mahmood Baig
Department of Biological & Biomedical Sciences
Purpose: We aimed to define a novel autosomal recessive neurodevelopmental disorder, characterize its clinical features, and identify the underlying genetic cause for this condition.
Methods: We performed a detailed clinical characterization of 19 individuals from nine unrelated, consanguineous families with a neurodevelopmental disorder. We used genome/exome sequencing approaches, linkage and cosegregation analyses to identify disease-causing variants, and we performed three-dimensional molecular in silico analysis to predict causality of variants where applicable.
Results: In all affected individuals who presented with a neurodevelopmental syndrome with progressive microcephaly, seizures, and intellectual disability we identified biallelic disease-causing variants in Protocadherin-gamma-C4 (PCDHGC4). Five variants were …