Editorial: Exploring Rare Genetic Variation in Pediatric-Onset Obsessive-Compulsive Disorder.

Genetic factors play a central role in the risk for developing obsessive-compulsive disorder (OCD), a finding established through twin, family, and large-scale cohort studies. Current genetic research aims to identify the specific genetic and genomic variants contributing to OCD risk.1 This involves investigating both common genetic variation-studied through genome-wide association studies (GWAS)-and rare genetic and genomic variation-studied through genome/exome sequencing or chromosomal microarray.