In a prospective Danish study, carriers of the NFKB1 -94 deletion and the ABCB1 intron 3 C-rs3789243-T variant alleles were at 1.45 and 1.55-fold higher risk of CRC, respectively, than carriers of the corresponding homozygous wildtype (95%CI 1.10–1.92, P = 0.03 and 95%CI 1.12–2.06, P = 0.03, respectively) [3], [13]. This evidence concerns the gene ABCB1 and colorectal carcinoma.