GRIK2 and psychiatric disorder: These differentially edited genes, especially those with missense editing, such as glutamate receptor, ionotropic, kainate 2 (Grik2, p.M620V), filamin A (Flna, p.S2331G) and capicua transcriptional repressor (Cic, p.E2270G), were mainly involved in abnormal social behaviour and neurodevelopmental and psychiatric disorders.