GRIN2B and schizophrenia: As a result of this analysis, associations of four polymorphisms, GRIN2A rs9788936 (p = 0.001), GRIN2A rs8057394 (p = 0.011), GRIN2B rs7313149 (p = 0.016), and SLC1A2 rs12361171 (p = 0.040) with the intensity of symptoms in schizophrenia were identified.