Haplotype 1 (C/C): The first haplotype, characterized by the C/C genotype of the SNP CYP1A2.163 C.A, was observed in 65 individuals (38.2%) in the bladder cancer patients, while it was present in 102 individuals (60%) in the control group. Here, CYP1A2 is linked to urinary bladder carcinoma.