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慢性丙型肝炎.ppt

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Slide *. Biochemical and Histologic Responses: Definitions A biochemical response to treatment is the normalization of previously elevated ALT levels.1 A sustained biochemical response is defined as normal serum ALT levels at the end of follow-up (24 weeks posttreatment). Patients who exhibit a biochemical response during therapy do not necessarily attain a virological response (ie, HCV RNA clearance); nevertheless, the long-term prognosis (8 to 11 years posttherapy) of these patients has been reported to be as good as that of virological responders.2 A histologic response refers to an improvement (ie, decrease) of at least 2 points in the 22-point Knodell Histologic Activity Index (HAI) score at the end of follow-up (24 weeks posttreatment).3 1. Perry CM, Jarvis B. Drugs. 2001;61:2263-2288. 2. Shindo M et al. Hepatology. 2001;33:1299-1302. 3. Heathcote EJ et al. N Engl J Med. 2000;343:1673-1680. 生化应答:血清 ALT 恢复正常; 组织学应答:在随访期(治疗结束后 24 周)结束时整个组织学活性指数(HAI)评分(Knodell评分系统2)改善 ≥2 分。 PEG干扰素治疗丙肝改善肝脏组织学:无论是否取得持续病毒学反应,PEG干扰素治疗均可改善肝脏组织学;取得持续病毒学反应的病人PEG干扰素的组织学改善率高于普通干扰素,高达83%;PEG干扰素治疗无病毒学反应的病人有47%取得了组织学改善。 根据Marcellin P, et al.研究,提出个体化疗程(RGT)理论模型:各种因素综合影响产生个体化差异,宿主因素、病毒因素、疾病因素、治疗因素。在治疗过程中,根据HCVRNA首次转阴的时间,调整疗程,即所谓的风琴效应。 个体化疗程(RGT)研究设计:Am J 2009年提出,以4周RVR为标准,延长44周,标准疗程48周;以HCVRNA转阴时间为起点,延长疗程44周,作为总的疗程。 PEG干扰素治疗基因1型高载量:小结:基因1型丙肝的标准疗程为48周, SVR 40-50%,根据HCV RNA阴性时间制定应答指导的个体化疗程(RGT), 使RNA阴性时间持续44周, 显著提高第16-24周HCV RNA 才转阴患者的SVR。 Poynard T et al 2009年发表的EPIC3 研究,建立的再治疗的新规则,基因1型患者如果获得cEVR,则疗程48周;如果未获得cEVR,则停止治疗或改为小剂量(小剂量佩乐能(0.5?g/kg/周)维持治疗。 EPIC3研究新发现,小剂量佩乐能(0.5?g/kg/周)单药维持治疗: 在总临床事件发生上,与观察对照组无差别; 但可显著减少肝功失代偿相关临床事件; 显著减少门脉曲张患者的临床事件; 结论:小剂量佩乐能维持治疗可能阻止门静脉高压症进展,减少曲张静脉破裂出血事件的发生。 Slide *. Independent Host Factors Associated With SVR in Combination Therapy With 派罗欣? (Peginterferon Alfa-2a [40KD]) Among independent host factors predictive of achieving an SVR with 派罗欣? (peginterferon alfa-2a [40KD]) therapy, the strongest association by a large margin is seen for HCV genotype (non-1 vs
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