Genetic Polymorphisms in CD35 Gene Contribute to the Susceptibility and Prognosis of Hepatocellular Carcinoma
Abstract CD35, an important molecule implicated in inflammation and immunity, has been reported to contribute to several cancers. However, very few studies have investigated the relationship between CD35 polymorphisms and hepatocellular carcinoma (HCC). This study was conducted to investigate the association of tag SNPs in CD35 gene with HCC susceptibility and postoperative recurrence, attempting to illuminate the interaction of gene-environment in HCC. A total of 1233 Chinese Han people were recruited in this study, including 647 healthy controls and 586 HCC cases. Six Tag SNPs (rs10494885, rs2296160, rs3737002, rs3849266, rs669117, rs7525160) of CD35 were selected using HaploView 4.2 program and were genotyped by matrix assisted laser desorption ionization time of flight mass spectrometry method (MALDI-TOF-MS). Overall, mutation genotypes CC/CG of CD35 rs7525160 significantly increased the risk of HCC. Through stratification analysis, CD35 rs7525160 CC/CG genotypes were found to increase HCC risk in younger than 65 years patients, and was closely related to the pathological type of poor prognosis of HCC. Cox proportional hazard ratio model analysis unraveled rs7525160 CC/CG genotype remained a significant independent risk factor for postoperative recurrence of HCC. In conclusion, CD35 rs7525160 polymorphism may contribute to susceptibility and prognosis of HCC in Chinese Han population.