Whole exome-trio analysis reveals rare variants associated with Congenital Pouch Colon

Abstract

Anorectal malformations (ARM) are individually common but Congenital Pouch Colon (CPC), a rare anorectal anomaly causes a dilated pouch in genitourinary tract. We have earlier attempted to understand the clinical genetic makeup of CPC and identified genes responsible for the disease using whole exome sequencing (WES). Here we report our studies of CPC, by identifying de novo heterozygous missense mutations in 16 proband-parent trios and further discover variants of unknown significance which could provide insights into CPC manifestation and its etiology. Our study confirms candidate mutations in genes, viz. C7orf57, C10orf120, C9orf84 and MUC16, CTC1 particularly emphasizing the role of hypothetical genes or open reading frames causing this developmental disorder. Variant validation revealed disease causing mutations associated with CPC and genitourinary diseases which could close the gaps of surgery in bringing intervention in therapies.