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1、mBC 一线治疗mBC二线贝伐珠单抗在晚期乳腺癌治疗领域的研究历程紫紫杉杉醇醇多多西西他他赛赛蒽蒽环环类类卡卡培培他他滨滨紫杉类紫杉类非紫杉类非紫杉类E21001L Pac20072007AVADO1LDoce20082008RIBBON-11LChemo20092009RIBBON-22LChemo20092009l紫杉类紫杉类非紫杉类非紫杉类标准化疗方案标准化疗方案l一线一线二线二线标准标准化疗化疗方案方案主要终点指标主要终点指标: PFS: PFS其他终点指标其他终点指标: ORR: ORR、OSOS、生活质量、安全性、生活质量、安全性 未经系统性治疗的局部复发/转移性乳腺癌N=722分
2、层因子:无病间期 (是否大于24个月)转移灶数目(是否大于3个)既往接受过辅助化疗ER状态(+/-/未知)紫杉醇a紫杉醇a + 贝伐珠单抗10 mg/kg q2w治疗至疾病进展*治疗至疾病进展*不允许交叉a a 90 mg/m2 每周一次连续3周,4周为一个周期Miller et al. NEJM 2007E2100:贝伐珠单抗联合紫杉醇一线治疗mBC的III期研究中位随访期试验组 41.6个月对照组 43.5个月11.411.4061218243036PFS估计HR=0.483p0.0001紫杉醇(n=354)紫杉醇+贝伐珠单抗(n=368)PFS (研究者判断) 5.85.811.311.
3、3HR=0.421p0.0001PFS(独立审评)a5.85.8月1.00.80.60.40.20.0a a 基于90%患者的可获得的影像学档案Gray et al. JCO 2009E2100:贝伐珠单抗联合紫杉醇 PFS延长一倍患者比例, %22%50%研究者评估独立数据审查a a 基线状态时存在可测量疾病的患者Klencke et al. ASCO 2008患者比例, %23%紫杉醇紫杉醇+贝伐珠单抗48%p0.0001紫杉醇紫杉醇+贝伐珠单抗p0.0001E2100:客观缓解率提高一倍HR(95%CL)Number of metastatic sites 24 months296426
4、0.580.50(0.420.79)(0.380.67)ER status Positive Negative4462650.590.44(0.440.78)(0.310.61)ER/PR/HER2 combined Negative All others2324900.490.57(0.340.70)(0.440.75)Prior adjuvant chemotherapy Yes No4752470.470.70(0.360.61)(0.491.01)Prior taxane therapy Yes No1425800.330.60(0.200.54)(0.470.76)Prior ant
5、hracycline therapy Yes No3643580.460.64(0.340.62)(0.470.86)PaclitaxelPaclitaxelbetterbetter*IRF assessmentGray et al. JCO 20095E2100:PFS获益在各亚组保持一致0.20.51 2 5TotalAvastin + paclitaxel Avastin + paclitaxel betterbetter0.80.60.40.20.01.0543630604842018241260.80.60.40.25436306048421824126*Post-hocHR=0.8
6、69 (95% CI 0.7221.046)Log-rank p=0.1374紫杉醇+贝伐珠单抗组(n=368)中位生存期:26.5个月紫杉醇组(n=354)中位生存期:24.8个月OS estimateMonthsAvastin SmPC 2009; Cameron EJC Suppl 2008; Roche data on file 2007E2100:一年生存率提高p=0.017*p=0.017*74.0%74.0%81.4%81.4%E2100:不增加化疗副作用 安全性良好Miles 2008; Roche data on file 20073/4级副反应发生率*, %紫杉醇 (n=3
7、48)贝伐珠单抗+ 紫杉醇 (n=363)3级4级3级4级感觉神经病变17.00.623.70.6疲劳 4.90.310.50.2感染 + 3/4级中性粒细胞减少 1.10.3 2.8 0高血压 1.4 015.40.6动脉血栓0 0 1.11.9静脉血栓 2.32.0 2.80.3出血 0.30 1.70.6蛋白尿 00 1.91.1左心室功能衰竭 00 1.90.3*Includes NCI AdEERS mandatory collection in the Avastin plus paclitaxel arm only which does not allow a valid comparison between the two armsEvents were double counted where applicable Two additional patients died from myocardial infarction in the Avastin plus paclitaxel arm