Risk of prostate cancer development between participants with prostate-specific antigen levels > 4 ng/mL and < 4ng/mL assessed by IL-13 cytokine concentrations and schistosomiasis status was insignificant X2 (4, n = 66) = 3.996 p = 0.406 (Table 3). The gene discussed is IL13; the disease is Familial prostate cancer.