Association of genetic polymorphisms CYP2A6*2 rs1801272 and CYP2A6*9 rs28399433 with tobacco-induced lung Cancer: case-control study in an Egyptian population

BMC Cancer

Nada Ezzeldin¹  Shereen Hamdy Abd Elaziz²  Dalia El-Lebedy²  Mirhane Mohamed Hassan²  Amal Saad-Hussein³  Ahmed El Bastawisy⁴  Amira Darwish⁴ 

[1] Chest Diseases, National Research Center;Clinical Pathology, National Research Center;Environmental Health & Preventive Medicine, National Research Center;Medical Oncology, National Cancer Institute, Cairo University;

关键词: Lung cancer;    CYP2A6;    CYP2A6*2;    CYP2A6*9;    Polymorphism;    Tobacco smoking;   

DOI  :  10.1186/s12885-018-4342-5

来源: DOAJ

【 摘 要 】

Abstract Background Several studies have reported the role of CYP2A6 genetic polymorphisms in smoking and lung cancer risk with some contradictory results in different populations. The purpose of the current study is to assess the contribution of the CYP2A6*2 rs1801272 and CYP2A6*9 rs28399433 gene polymorphisms and tobacco smoking in the risk of lung cancer in an Egyptian population. Methods A case-control study was conducted on 150 lung cancer cases and 150 controls. All subjects were subjected to blood sampling for Extraction of genomic DNA and Genotyping of the CYP2A6 gene SNPs (CYP2A6*2 (1799 T > A) rs1801272 and CYP2A6*9 (− 48 T > G) rs28399433 by Real time PCR. Results AC and CC genotypes were detected in CYP2A6*9; and AT genotype in CYP2A6*2. The frequency of CYP2A6*2 and CYP2A6*9 were 0.7% and 3.7% respectively in the studied Egyptian population. All cancer cases with slow metabolizer variants were NSCLC. Non-smokers represented 71.4% of the CYP2A6 variants. There was no statistical significant association between risk of lung cancer, smoking habits, heaviness of smoking and the different polymorphisms of CYP2A6 genotypes. Conclusion The frequency of slow metabolizers CYP2A6*2 and CYP2A6*9 are poor in the studied Egyptian population. Our findings did not suggest any association between CYP2A6 genotypes and risk of lung cancer.

【 授权许可】

Unknown