GRM3 and schizophrenia: Recent transcriptome-wide association studies of schizophrenia based on eQTL identified in adult human brain provide evidence for altered expression of several synaptic plasticity genes in association with genetic risk for schizophrenia, including CLCN3 (80), GABRA2 (82), and LRP8 (83) in the adult frontal cortex (60) and GRM3 (84) and CACNA1C (81) in the adult dentate gyrus (85).