NFKB1 and colorectal carcinoma: We have previously shown that carriage of the variant del-allele of the functional ins/del NFKB1/rs28362491 polymorphism is associated with increased risk of CRC and interacted with meat intake in a subset of the current study group [30] in agreement with results from two other studies also reporting increased risk of CRC among variant carriers of the polymorphism among a Malaysian [31] and a Swedish population [32], but not a Chinese study group [32].