Furthermore, Schwarz et al. analyzed the relationship between IL-2 and susceptibility genes for schizophrenia and found that there was a significant association between the IL-2–330TT genotype and schizophrenia in 230 patients with schizophrenia (χ2 = 7.418, df = 2 and p = 0.024) [57]. This evidence concerns the gene IL2 and schizophrenia.