Genetic Susceptibility to Oral Cancer due to Combined Effects of GSTT1, GSTM1 and CYP1A1 Gene Variants in Tobacco Addicted Patients of Pashtun Ethnicity of Khyber Pakhtunkhwa Province of Pakistan

Zakiullah, Zakiullah; Ahmadullah, Ahmadullah; Khisroon, Muhammad; Saeed, Muhammad; Khan, Ajmal; Khuda, Fazli; Ali, Sajid; Javed, Nabila; Ovais, Muhammad; Masood, Nosheen; Khalil, Nasir Khan; Ismail, Mohammad

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자료유형: 학술저널

저자정보: Zakiullah, Zakiullah (Department of Pharmacy, University of Peshawar) Ahmadullah, Ahmadullah (Department of Zoology, University of Peshawar) Khisroon, Muhammad (Department of Zoology, University of Peshawar) Saeed, Muhammad (Department of Pharmacy, University of Peshawar) Khan, Ajmal (Department of Zoology, University of Peshawar) Khuda, Fazli (Department of Pharmacy, University of Peshawar) Ali, Sajid (Department of Biotechnology, Abdul Wali Khan, University Mardan) Javed, Nabila (Institute of Radiotherapy & Nuclear Medicine, University of Peshawar) Ovais, Muhammad (Centre of Biotechnology & Microbiology, University of Peshawar) Masood, Nosheen (Fatima Jinnah Women University) Khalil, Nasir Khan (Department of Pharmacy, University of Peshawar) Ismail, Mohammad (Department of Pharmacy, University of Peshawar)

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제16권 제3호

발행연도: 2015.1

수록면: 1,145 - 1,150 (6page)

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Associations of GSTT1, GSTM1 and CYP1A1 gene variants with risk of developing oral cancer were evaluated in this study. A case-control study was conducted in Pashtun population of Khyber Pakhtunkhwa province of Pakistan in which 200 hospital based oral cancer cases and 151 population based healthy controls exposed to similar environmental conditions were included. Sociodemographic data were obtained and blood samples were collected with informed consent for analysis. GSTM1 and GSTT1 were analysed through conventional PCR method while specific RT-PCR method was used to detect CYP1A1 polymorphisms. Results were analyzed for conditional logistic regression model by SPSS version 20. The study shows that patients with either GSTM1 or GSTT1 null genotypes have significantly higher risk of oral cancer (adjusted odds (OR): (3.019 (1.861-4.898) and 3.011(1.865-4.862), respectively), which further increased when either one or both null genes were present in combination (adjusted odds (OR): (3.627 (1.981-6.642 and 9.261 (4.495-19.079), respectively). CYP1A1 rs4646903 gene variants individually showed weak association OR: 1.121 (0.717-1.752); however, in the presence of GSTM1 and/or GSTT1 null genotypes further increasing the association (adjusted odds (ORs): 4.576 (2.038-10.273), 5.593 (2.530-12.362) and 16.10 (3.854-67.260 for GSTM/GSTT null and CYP1A1 wild type, GSTM/GSTT either null and CYP1A1 variant alleles, and all 3 gene polymorphisms combinations, respectively). Our findings suggest that presence of GSTM1 and/or GSTT1 null genotypes along with variant alleles of CYP1A1 may be the risk alleles for oral cancer susceptibility in Pashtun population.

#Oral cancer risk #GSTT1 #GSTM1 and CYP1A1 gene variants #Pashtun population #Pakistan

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