DLGAP1 and Anxiety: While a genome-wide association study (GWAS) of OCD patients showed associations with two variants of Dlgap1 to have the lowest, subthreshold p-values (Stewart et al. 2013; Wu et al. 2013), Dlgap1 KO mice exhibited only impaired sociability and altered learning performance, but neither OCD-like nor anxiety-like behavior at 2 to 4 months of age in previous studies (Coba et al. 2018).