MDM2 and urinary bladder cancer: For the T309G polymorphism of the MDM2 gene, sensitivity analysis revealed a significant association between SNP rs2279744 and bladder cancer occurrence when the study of Gangwar et al. 2010 was removed: G vs. T (OR= 1.30; 95% CI [1.07; 1.57]), GG vs. GT+TT (OR= 1.53; 95% CI [1.10; 2.11]), GG vs. GT (OR=1.44; 95% CI [1.02; 2.02]), GG vs. TT (OR= 1.88; 95% CI [1.25; 2.82]).