IL6 and Familial prostate cancer: The odds ratios (ORs) of prostate cancer were 0.92 (95% confidence interval (CI), 0.89, 0.96; P=1.58×10-05), and 1.12 (95% CI, 1.07, 1.17; P=6.61×10-07) for one standard deviation (SD) increase in genetic susceptibility to IL-1ra, and IL-6 levels, respectively.