GRIA2 and attention deficit-hyperactivity disorder: Furthermore, Alkelai et al. reported in 2021 [99] a de novo stop variant in the GRIA2 gene (c.1522 G>T (p.Glu508Ter) in a 10-year-old female with behavioral abnormalities, obsessive-compulsive disorder (OCD), ADHD, aggressive behavior, schizophrenia, and early life motor and language delay.