NFKB1 and colorectal carcinoma: ABCB1 C3435T homozygous C-allele carriers, ABCB1 C-rs3789243-T T-allele carriers and NFKB1 -94 deletion carriers were at high risk of CRC by meat intake (P for interaction = 0.02, 0.01, and 0.03, respectively).