肝细胞癌肝动脉化疗栓塞术的疗效与HBV基因型相关性研究

目的　评估感染不同HBV基因型的肝细胞癌患者在接受相同的肝动脉化疗栓塞术治疗后 ,疗效与预后的差异。方法　对感染HBV的HCC患者进行单纯的肝动脉化疗栓塞术治疗 ,并通过肿瘤缩小率、局部复发率、累计生存率、AFP变化观察疗效。同时采用HBVS基因的PCR产物直接测序法进行HBV基因型分型 ,比较感染不同HBV基因型患者间的疗效差别。结果　经TACE治疗 ,HBVC基因型的HCC患者肿瘤缩小率与B基因型相似 (P =0 .0 99) ;B型的局部复发率低于C型 (P =0 .0 36 ) ;1年累计生存率两者之间无显著差异 ,但B型的 2、3年累计生存率明显高于C型 (P =0 .0 36和P =0 .0 13) ;AFP的变化两组相似 (P >0 .0 5 )。结论　B基因型比C基因型对栓塞治疗有较好的疗效和预后 ,故有望将HBV基因型检测作为指导感染HBV的HCC患者TACE的治疗和预后判断的指标。

The study of correlation between HBV genotype and the response to transcatheter arterial chemoembolization therapy in hepatocellular carcinoma patients

Objective To evaluate the influence of hepatitis B virus(HBV) genotype on response to transcatheter arterial embolization therapy in patients with HBV-related HCC. Methods Transcatheter arterial chemoembolization therapy was conducted in patients with HBV-related HCC and response to embolization therapy were observed according to the tumor necrosis rate, the HCC recurrence rate, the cumulative incidence of survival rate and the change of AFP. The HBV genotype was determined by sequencing directly the polymerase chain reaction products of the HBV S gene. The response of HCC to embolization therapy was compared between patients who were infected with different genotypic HBV. Results The tumor necrosis rate of genotype C patients was similar to that of genotype B patients (P=0.099). The HCC recurrence rate of genotype B was lower than that of genotype C patients (P=0.036). The cumulative incidence of survival rates of 2 and 3 years were significantly higher in the genotype B patients (P=0.036 and P=0.013). There was no difference between the two genotypes, patients in the change of AFP (P>0.05). Conclusions HBV genotype B patients seem to have a better response to embolization therapy as compared to genotype C patients. Determination of HBV genotype may be useful in predicting the outcomes of TACE therapy in HBV-related HCC.