Abstract
There are a few comprehensive genetic studies on autism spectrum disorders (ASD) in India. Children of multiple births are valuable for genomics studies of complex disorders such as ASD. We report whole-exome sequencing (WES) in a triplet family in which only one among the triplet has ASD. The objective of this study was to identify potential candidate genes for ASD. Exome DNA was enriched using a twist human customized core exome kit, and paired-end sequencing was performed. Proband-specific de novo variants included 150 single nucleotide polymorphisms (SNPs) and 74 indels. Thirteen SNPs were in exonic regions, 7 of them being missense variations. Seventeen variants were previously reported in ASD. Genes harboring variants have functions in the development and maintenance of the central nervous system and are enriched in biological processes involving cell adhesion. This is the first comprehensive genetic study of a monozygotic triplet in ASD.
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