@article { author = {Nigam, Kumud and Sanyal, Somali and Gupta, Shalini and Gupta, Om Prakash and Mahdi, Abbas Ali and Bhatt, M L B}, title = {Alteration of the Risk of Oral Pre-cancer and Cancer in North India Population by CYP1A1 Polymorphism Genotypes and Haplotype}, journal = {Asian Pacific Journal of Cancer Prevention}, volume = {20}, number = {2}, pages = {345-354}, year = {2019}, publisher = {West Asia Organization for Cancer Prevention (WAOCP), APOCP's West Asia Chapter.}, issn = {1513-7368}, eissn = {2476-762X}, doi = {10.31557/APJCP.2019.20.2.345}, abstract = {Background: The aim of this study was to evaluate any association between CYP1A1 (T6235C and C4887A,A4889G) gene polymorphisms and the risk of oral pre-cancer and cancer. Methods: In the present study, 250 patientswith oral pre-cancer and/or cancer and 250 healthy controls were genotyped for CYP1A1 T6235C, C4887Aand A4889Gpolymorphisms by the PCR-RFLP method. Results: None of the CYP1A1 polymorphisms were associated with the risk ofeither oral cancer or pre cancer. Nor were any links with clinical parameters of oral cancer found. However, among theconsumers of areca nut/pan masala the TC, CA and AG genotypes respectively for the CYP1A1 T6235C,C4887AandA4889G polymorphisms were significantly more frequent in controls compared to cases ( p values for cases vs. controlsof 0.0032, 0.0019 and 0.0009, respectively). Similarly, compared to the haplotype TCA, TAG constituted by CYP1A1T6235C and C4887A and A4889G was more common in controls (6.88%) than in cases (4.07%). Conclusion: Ourresults suggest that genotypes regarding CYP1A1 polymorphisms may modulate the risk of oral cancer and pre-canceramong the areca nut/pan masala consumers. The haplotype may also exert an influence in our north Indian population.}, keywords = {Oral pre cancer and cancer,CYP1A1,PCR-RFLP,gene polymorphism}, url = {https://journal.waocp.org/article_82552.html}, eprint = {https://journal.waocp.org/article_82552_4799f7bcc958a3c1faa5bb39b2f95eae.pdf} }