Finally, in a gene-set study for high-confidence interactions (51), the DLGAP1 and GRIK2 revealed a pattern of association and pointed to the possible role of DLGAP1 and GRIK2 interactors in the etiology of OCD, including genes such as Neuronal Differentiation 6 (NEUROD6) gene, Synaptic Vesicle Glycoprotein 2A gene (SV2A), Glutamate Ionotropic Receptor AMPA Type Subunit 4 gene (GRIA4), and Solute Carrier Family 1 Member 2 gene (SLC1A2). Here, GRIA4 is linked to Compulsive behaviors.