NOD2 and urinary bladder cancer: The frequency of the c.3020insC allele in the consecutive series of bladder cancer patients was significantly different compared to the control population, the characteristics of the patients with and without the c.c.3020insC allele are presented in Table 2, 63 (8.9%) patients carried the NOD2 variant (OR = 1.4; 95% CI 1.01–1.90; p = 0.04).