To date, a number of molecular epidemiological studies have been done to evaluate the association between CYP1A2*F, CYP1B1 Leu432Val, Asn453Ser, and Arg48Gly polymorphisms and colorectal cancer risk in diverse populations [15]–[29], [31], [32], [34]–[39]. This evidence concerns the gene CYP1A2 and colorectal cancer.