GRIA2 and schizophrenia: As regards to transcripts, we found that GRIA2 and Homer1 levels resulted significantly lower in the hippocampus of schizophrenia patients, compared with non-psychiatric controls from ANCOVA models (adjusted means [95% CI]; GRIA2: CTRL = 1.1 [0.7–1.8], SCZ = 0.5 [0.3–0.7] arbitrary units, F(1,36) = 6.226, p = 0.017; Homer1: CTRL = 1.3 [0.9–1.8], SCZ = 0.7 [0.5–0.9] arbitrary units, F(1,36) = 6.787, p = 0.013; Fig. 2e′, l′, Supplementary Table 4), while no significant alterations were reported in the levels of the other hippocampal and cortical mRNAs detected (Fig. 2, Supplementary Table 4).