ARID2 and attention deficit-hyperactivity disorder: Rare copy number variation in TRIM32 gene and single nucleotide polymorphism of TRIM31 gene are the drivers of ADHD development.310 Mutation in a SWI/SNF chromatin remodeling complex protein ARID2, has been found in the patients with ADHD.311 Analyzing whole-genome sequencing data from 272 patient samples, Zhou et al.312 showed that one of the top candidate genes that are linked with ADHD is KMT2D.