HMOX1 and colorectal carcinoma: As shown in Table 2 no association between HMOX1 A-413T and CRC risk was found (TA vs. AA; Incidence rate ratios (IRR) = 1.00% and 95% Confidence Interval (95% CI): 0.86–1.15, p = 0.94, TT vs. AA; incidence rate ratio (IRR) = 1.15, 95% CI: 0.95–1.38, p = 0.15, and TT vs. AA + TA; IRR = 1.15, 95% CI: 0.98–1.36, p = 0.10, respectively, for the fully adjusted estimates (Table 2).