Study on the Association of XRCC1 Gene rs72484243 Polymorphisms with Increased Laryngeal Cancer Risk

Objective: To study the association of X-ray repair cross-complementing group 1 (XRCC1) gene polymorphisms with increased laryngeal cancer risk. Methods: A total of 120 individuals, comprising 60 patients with laryngeal squamous cell carcinoma (LSCC), and 60 healthy volunteers participated were selected. Blood samples were taken and analyzed, and 4 XRCC1 polymorphisms (rs145135970, rs1799780, rs25489, and rs72484243) were genotyped. Results: Gender, age, body mass index (BMI), and smoking habits were shown to be the high-risk factors for LSCC. Genotype and allele distributions for the 4 polymorphisms differed significantly between both groups (P < 0.05). Furthermore, carriers with the rs72484243GTGT- allele exhibited an increased risk of LSCC relative to those who had the rs145135970 GTGTGTGTGTGTGT- allele, the rs1799780 G-A allele, or the rs25489 C-T allele, as determined by binary logistic regression analysis (OR = 2.74, 95% CI: 1.27–5.91, P = 0.01), after accounting for possible co-factors like sex, age, BMI, drinking and smoking behavior, and special diet requirements. In addition, a TA haplotype and a GTGTGTGTGTGTGTTG haplotype were linked to LSCC in Chinese populations in a haploid association study of 4 SNP loci in the XRCC1 gene (P = 0.05 OR = 1.36, 95% CI = 1.1228–1.6406). Conclusion: Genetic polymorphisms of the XRCC1 gene at the rs72484243 site were correlated with an elevated risk of LSCC among the Xinjiang population.