Lack of association of CYP1A1 polymorphism with prostate cancer susceptibility of Tunisian men.

Cytochrome P450 (CYP)1A1 gene polymorphism has been shown to be associated with several diseases. In this study, we evaluated the association between the polymorphism in the cytochrome P-450 (CYP)1A1 (CYP1A1) gene and genetic susceptibility to prostate cancer (PCa) in Tunisian men. One hundred and thirty eight PCa patients and the same number of controls were enrolled in this study. All DNA samples from peripheral blood leucocytes were genotyped for genetic polymorphism of the CYP1A1 gene using the polymerase chain reaction-restriction fragment length polymorphism method. The polymorphism in PCa patients was also analyzed according to age at diagnosis, tobacco use, cancer stage, and grade (Gleason score). The prevalence of CYP1A1 variants (w1m1 and m1m1) was similar in PCa patients and controls (15.22% vs. 17.39%, p=0.624 and 2.17%, respectively). No significant difference in the frequency distribution of CYP1A1 polymorphism was observed between PCa patients and controls. Furthermore, we were unable to demonstrate any significant association between the studied CYP1A1 polymorphism, age, tobacco use, and tumor parameters of aggressiveness at diagnosis.