BACKGROUND:This was a prospective phase II study of cisplatin and bortezomib (CB) in the first line treatment of malignant pleural mesothelioma (MPM) with validation of progression free survival rate at 18 weeks (PFSR-18)(1) as primary end-point. METHODS:Chemotherapy-naïve patients with histologically proven MPM and performance status (PS) 0/1, were treated with cisplatin 75 mg/m(2) on day 1 and bortezomib 1.3mg/m(2) on days 1, 4, 8, 11 every 3 weeks. The primary end-point validation utilised the landmark method. RESULTS:Between 2007 and 2010 82 patients were entered. PFSR-18 was 53% (80% confidence intervals, CIs, 42-64%). The overall survival (OS) was 13.5 months (95% CI 10.5-15) with 56% (95% CI 44-66%) alive at 1 year. The median PFS was 5.1months (95% CI 3.3-6.5) and the response rate was 28.4% (95% CI 18.9-39.5%). The most frequent grade 3-4 toxicities were hyponatremia (46%), hypokalaemia (17%), fatigue (12.2%), thrombocytopenia (11%), neutropenia (9.7%) and neurotoxicity (motor, sensory, other: 1.2%, 8.5%, 2.4%). There were two toxic deaths (32 and 74days) due to acute pneumonitis and cardiac arrest. End-point validation showed that patients with no progression/progression at 18 weeks had median OS of 16.9/11.9 months, respectively. Hazard ratio was 0.46 (CI 0.32-0.67), logrank test and C-index were 0.007 and 0.60. CONCLUSION:The 50% PFSR-18 for CB was contained within the 80% CI for (42-64%). Therefore the null hypothesis could not be rejected. Accordingly this combination does not warrant further investigation. PFSR-18 was confirmed as a strong predictor of survival.

译文

背景:本研究为顺铂和硼替佐米(CB)在恶性胸膜间皮瘤(MPM)一线治疗中的前瞻性II期研究,以18周无进展生存率(PFSR-18)(1)为主要终点,观点。
方法:未经化学疗法治疗且经组织学证实为MPM且表现状态(PS)为0/1的患者,在第1天接受顺铂75 mg / m(2),在第1,4,8天接受硼替佐米1.3mg / m(2)的治疗。 ,每3周11个。主要的终点验证利用了地标方法。
结果:2007年至2010年间,共纳入82例患者。 PFSR-18为53%(80%置信区间,CI为42-64%)。总体生存期(OS)为13.5个月(95%CI 10.5-15),其中56%(95%CI 44-66%)在1年时还活着。 PFS中位数为5.1个月(95%CI为3.3-6.5),缓解率为28.4%(95%CI为18.9-39.5%)。 3-4级最常见的毒性反应是低钠血症(46%),低血钾症(17%),疲劳(12.2%),血小板减少症(11%),中性粒细胞减少症(9.7%)和神经毒性(运动,感觉,其他:1.2%, 8.5%,2.4%)。由于急性肺炎和心脏骤停,有两次中毒死亡(分别为32天和74天)。终点验证显示,在18周时无进展/进展的患者的OS中位数分别为16.9 / 11.9个月。危险比为0.46(CI 0.32-0.67),对数秩检验和C指数分别为0.007和0.60。
结论:CB的50%PFSR-18包含在80%的CI中(42-64%)。因此,原假设不能被拒绝。因此,这种组合不值得进一步研究。 PFSR-18被证实是生存的有力预测指标。

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