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AIM: To assess the associations of human leukocyte antigen (HLA) class Ⅱ DQB1*0301 and/or DRB1*1101 allele with spontaneous hepatitis C virus (HCV) clearance by meta-analysis of individual dataset from all studies published till date.METHODS: To clarify the impact of HLA class Ⅱ polymorphisms on viral clearance, we performed a metaanalysis of the published data from 11 studies comparing the frequencies of DQB1*0301 and DRB1*1101 alleles in individuals with spontaneous resolution to those with persistent infection. As we identified the heterogeneity between studies, summary statistical data were calculated based on a random-effect model.RESULTS: Meta-analyses yielded summary estimatesodds ratio (OR) of 2.36 [95%CI (1.62, 3.43), P