PPARG and colorectal carcinoma: When compared with the PPARG rs3856806 CC genotype, the PPARG rs3856806 TT, and TT/CT genotypes also indicate an increased CRC risk (crude OR = 1.56, 95% CI 1.09–2.23 for TT vs. CC, P = 0.015; crude OR = 1.20, 95% CI 1.02–1.42 for TT/CT vs. CC, P = 0.033).