Queensland University of Technology, Princess Alexandra Hospital, Brisbane, Australia.
Broadstreet HEOR, 201-343 Railway St, Vancouver BC, Canada.
Lung Cancer. 2023 Mar;177:11-20. doi: 10.1016/j.lungcan.2023.01.006. Epub 2023 Jan 11.
To quantify the long-term comparative efficacy and safety of nivolumab in combination with ipilimumab (NIVO + IPI) relative to other immunotherapy (IO)-based regimens and chemotherapy in patients with first-line advanced non-small cell lung cancer (aNSCLC).
Phase 3 randomized controlled-trials (RCTs) with minimum 3-year follow-up evaluating IO-based regimens approved for first-line aNSCLC were identified via systematic literature review. Analytic populations were defined by levels of PD-L1 expression and histology. Due to presence of proportional hazards violations, time-varying hazard ratios (HRs) of overall survival (OS) and progression-free survival (PFS) were estimated via Bayesian fractional polynomial network meta-analysis. For safety endpoints, odds ratios (ORs) were estimated using indirect treatment comparisons (ITCs).
CheckMate 227, KEYNOTE-189, KEYNOTE-407, KEYNOTE-024, KEYNOTE-042, and IMpower150 were included in the base case analysis. For OS and PFS, HRs of NIVO + IPI relative to other IO-based regimens trended downward over time across analytic populations. The 36-month OS HRs of NIVO + IPI versus comparators were: 0.69 (95 % credible interval: 0.47, 1.00) versus pembrolizumab + chemotherapy and 0.65 (0.45, 0.93) versus atezolizumab + bevacizumab + chemotherapy in the non-squamous and PD-L1 all-comers population; 0.73 (0.53, 1.02) versus pembrolizumab + chemotherapy in the squamous and PD-L1 all-comers population; and 1.05 (0.83, 1.32) versus pembrolizumab in the mixed histology and PD-L1 ≥ 50 % population. For PFS, 36-month HR point estimates ranged from 0.46 to 0.85 (only statistically significant versus pembrolizumab + chemotherapy in the squamous population; 0.46 [0.31, 0.69]). Adverse events (AEs) leading to discontinuation were not statistically significantly different between NIVO + IPI and pembrolizumab + chemotherapy, nor between NIVO + IPI and pembrolizumab monotherapy, although treatment-related grade ≥ 3 AEs were higher with NIVO + IPI than pembrolizumab monotherapy (OR = 2.21 [1.30, 3.75]).
This study indicates trends towards long-term benefit with NIVO + IPI compared with other IO-based combinations, with manageable toxicities.
通过贝叶斯分数多项式网络荟萃分析,定量评估纳武利尤单抗联合伊匹单抗(NIVO+IPI)与其他免疫治疗(IO)方案和化疗一线治疗晚期非小细胞肺癌(aNSCLC)的长期比较疗效和安全性。
通过系统文献回顾,确定了具有至少 3 年随访的评估一线 aNSCLC 中 IO 方案的 III 期随机对照试验(RCT)。分析人群根据 PD-L1 表达和组织学水平定义。由于存在比例风险违反,通过贝叶斯分数多项式网络荟萃分析估计总生存期(OS)和无进展生存期(PFS)的时变风险比(HR)。对于安全性终点,使用间接治疗比较(ITC)估计比值比(OR)。
在基础案例分析中,纳入了 CheckMate 227、KEYNOTE-189、KEYNOTE-407、KEYNOTE-024、KEYNOTE-042 和 IMpower150 试验。对于 OS 和 PFS,NIVO+IPI 与其他 IO 方案的 HR 随时间呈下降趋势。NIVO+IPI 与对照组相比的 36 个月 OS HR 为:非鳞状细胞和 PD-L1 所有患者人群中,0.69(95%可信区间:0.47,1.00)对比帕博利珠单抗+化疗,0.65(0.45,0.93)对比阿替利珠单抗+贝伐珠单抗+化疗;鳞状细胞和 PD-L1 所有患者人群中,0.73(0.53,1.02)对比帕博利珠单抗+化疗;混合组织学和 PD-L1≥50%人群中,1.05(0.83,1.32)对比帕博利珠单抗。对于 PFS,36 个月 HR 点估计值范围为 0.46 至 0.85(仅在鳞状细胞人群中与帕博利珠单抗+化疗有统计学意义;0.46 [0.31,0.69])。NIVO+IPI 与帕博利珠单抗+化疗之间,以及 NIVO+IPI 与帕博利珠单抗单药治疗之间,导致停药的不良事件(AE)无统计学显著差异,但与帕博利珠单抗单药治疗相比,NIVO+IPI 治疗相关的≥3 级 AE 更高(OR=2.21 [1.30,3.75])。
这项研究表明,与其他 IO 联合方案相比,NIVO+IPI 具有长期获益趋势,且毒性可管理。