慢性丙型肝炎抗病毒治疗应答独立预测因子的研究

目的 通过对应用不同干扰素(IFN)剂型的大样本慢性丙型肝炎患者的治疗,对可能与IFN疗效相关的因子进行多因素回归分析,探讨慢性丙型肝炎IFN治疗应答的预测因子。方法 对入选聚乙二醇干扰素α-2a治疗慢性丙型肝炎的随机、开放、多中心对照研究的患者随机分组,分别应用聚乙二醇干扰素α-2a和干扰素α-2a治疗24周,停药后随访24周。在用药前对患者血清中的HCV RNA进行定量和基因分型检测,治疗和随访结束时检测血清HCV RNA含量,以HCV RNA阴转作为IFN治疗应答的主要评价指标,并对患者临床特征、病毒学特征进行多因素logistic回归分析。 结果 按意愿治疗分析人群208例,按方案分析人群197例,在对按方案分析人群的分析中,治疗24周结束时,女性、年龄<50岁、非输血感染途径、IFN治疗后复发者、天冬氨酸氨基转移酶/丙氨酸氨基转移酶(AST/ALT)<1、HCV RNA 含量<8×105U/ml,非基因1型HCV感染和聚乙二醇干扰素α-2a治疗患者的病毒应答率分别高于男性、年龄≥50岁、输血感染途径、IFN初治患者、AST/ALT比值≥1、HCV RNA含量≥8×105U/ml、基因1型HCV感染和干扰素α-2a治疗患者的应答率。但随访结束时,AST/ALT≥1和HCV RNA含量≥8×105U/ml患者的持续应答率却大于AST/ALT<1和HCV RNA含量<8 × 105U/ml患者。经多因素logis

The pegasys using and HCV genotype were the independent predictors of the response to antiviral therapy in chronic hepatitis C

OBJECTIVE: To investigate the predictors of IFN therapy in patients with chronic hepatitis C through making the multivariate logistic regression analysis. METHODS: The patients in the opened, randomized and controlled trial were enrolled into two group, pegasys and Roferon-A group, and were given 24 weeks of pegasys (injection of 180 microg a week), and Roferon-A (injection three times of Roferon-A 3 MU a week) therapy, and followed 24 weeks. The HCV RNA content was determined at the time before, end of treatment and at the followed-up. The association of the response to the treatment with the clinical characteristics including age, gender, way of HCV infection, history of IFN treatment, planet count, AST/ALT ratio, HCV RNA level, HCV genotype and treatment drugs was made trough multivariate logistic regression analysis. RESULTS: The PP population containing 197 cases was analyzed. After controlling for age, gender, way of HCV infection, history of IFN treatment, planet count, AST/ALT ratio, HCV RNA level and treatment, the HCV genotype was not predictor of the end of treatment viral response (ETVR) to IFN therapy (OR 0.604, 95% CI 0.271-1.349, P = 0.219), but was the independent predictor of sustained viral response (SVR) (OR 0.408, 95% CI 0.189-0.881, P = 0.023). After controlling for other characteristics, the treatment drug was the predictors of ETVR (OR 0.105, 95% CI 0.052-0.212, P < 0.001) and SVR (OR 0.255, 95% CI 0.123-0.529, P < 0.001). CONCLUSION: The pegasys using and HCV genotype were the independent predictors of the response to antiviral therapy in chronic hepatitis C.