ARG S1PR1 expression was significantly higher in Type 2 schizophrenia compared to controls (t = 2.20, p = 0.021) and Type 1 schizophrenia (t = 2.47, p = 0.012), but there was no difference between controls and Type 1 schizophrenia (t = 0.65, p = 0.525). Here, S1PR1 is linked to schizophrenia.