The results showed that, compared with the control group, the expression of IL-2RG mRNA in patients’ peripheral blood was upregulated (patients vs. controls, median [interquartile range]: 2.080 [3.428–1.046] vs. 0.324 [0.856–0.000], p < 0.0001), suggesting that the altered immune response in schizophrenia might be related to the overexpression of IL-2RG [59]. This evidence concerns the gene IL2RG and schizophrenia.