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<p>After the global approval of atezolizumab plus bevacizumab and chemotherapy as first-line metastatic nonsquamous non-small-cell lung cancer (nsqNSCLC) treatment, the IMpower151 (<a href="https://clinicaltrials.gov/ct2/show/NCT04194203">NCT04194203</a>) trial was conducted in China to address regional differences. Chemotherapy-naive patients with metastatic nsqNSCLC (<i>N</i> = 305) were randomized 1:1 to receive either atezolizumab, bevacizumab, carboplatin and paclitaxel or pemetrexed (ABCPem/Pac; <i>n</i> = 152) or placebo plus bevacizumab, carboplatin and pemetrexed or paclitaxel (BCPem/Pac; <i>n</i> = 153). The primary endpoint was investigator-assessed progression-free survival (INV-PFS); secondary endpoints included subgroup analyses of INV-PFS, independent review facility-assessed PFS, overall survival, and investigator-assessed objective response rate and duration of response per RECIST v.1.1. Most patients (97%) received pemetrexed, and 53% had <i>EGFR</i><sup><i>+</i></sup> tumors. Median INV-PFS for ABCPem/Pac versus BCPem/Pac was 9.5 versus 7.1 months (stratified hazard ratio: 0.84; 95% confidence interval: 0.65, 1.09; <i>P</i> = 0.184). INV-PFS across subgroups and independent review facility-assessed PFS were consistent with INV-PFS in the intention-to-treat population. Median overall survival was 20.7 versus 18.7 months in the ABCPem/Pac versus BCPem/Pac arms, respectively (stratified hazard ratio: 0.93; 95% confidence interval: 0.67, 1.28). Confirmed objective response rate with ABCPem/Pac versus BCPem/Pac was 48% versus 50%, respectively; median duration of response was 11.3 versus 8.3 months. Adverse events of special interest for atezolizumab were observed in 68% (grades 3 and 4: 11%) and 71% (grades 3 and 4: 7%) of patients receiving ABCPem/Pac and BCPem/Pac, respectively. The most common adverse events of special interest for atezolizumab in the ABCPem/Pac and BCPem/Pac arms were hepatitis (driven by laboratory abnormalities; mostly low grade), hypothyroidism and rash. Overall, IMpower151 did not meet its primary endpoint (INV-PFS) in metastatic nsqNSCLC. ABCPem/Pac was generally well tolerated, with no new safety signals. Trial registration number: ClinicalTrials.gov, <a href="https://clinicaltrials.gov/ct2/show/NCT02366143">NCT02366143</a></p>

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Atezolizumab plus bevacizumab and chemotherapy in metastatic nonsquamous NSCLC: the randomized double-blind phase 3 IMpower151 trial

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月16日

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  • Caicun Zhou,
  • Xiaorong Dong,
  • Gongyan Chen,
  • Zhehai Wang,
  • Xianghua Wu,
  • Yu Yao,
  • Yiping Zhang,
  • Ying Cheng,
  • Hongming Pan,
  • Xiaodong Zhang,
  • Jiuwei Cui,
  • Lifeng Wang,
  • Xi Chen,
  • Xiaoling Li,
  • Ziping Wang,
  • Qiming Wang,
  • Jianxing He,
  • Mengzhao Wang,
  • Iris Yan,
  • Li Qian,
  • Miao Xu,
  • Xiayu Huang,
  • Chun Sun,
  • Jun Cai,
  • Qiong Wu,
  • Marcus Ballinger,
  • Monika Kaul,
  • Minu K. Srivastava

摘要

After the global approval of atezolizumab plus bevacizumab and chemotherapy as first-line metastatic nonsquamous non-small-cell lung cancer (nsqNSCLC) treatment, the IMpower151 (NCT04194203) trial was conducted in China to address regional differences. Chemotherapy-naive patients with metastatic nsqNSCLC (N = 305) were randomized 1:1 to receive either atezolizumab, bevacizumab, carboplatin and paclitaxel or pemetrexed (ABCPem/Pac; n = 152) or placebo plus bevacizumab, carboplatin and pemetrexed or paclitaxel (BCPem/Pac; n = 153). The primary endpoint was investigator-assessed progression-free survival (INV-PFS); secondary endpoints included subgroup analyses of INV-PFS, independent review facility-assessed PFS, overall survival, and investigator-assessed objective response rate and duration of response per RECIST v.1.1. Most patients (97%) received pemetrexed, and 53% had EGFR+ tumors. Median INV-PFS for ABCPem/Pac versus BCPem/Pac was 9.5 versus 7.1 months (stratified hazard ratio: 0.84; 95% confidence interval: 0.65, 1.09; P = 0.184). INV-PFS across subgroups and independent review facility-assessed PFS were consistent with INV-PFS in the intention-to-treat population. Median overall survival was 20.7 versus 18.7 months in the ABCPem/Pac versus BCPem/Pac arms, respectively (stratified hazard ratio: 0.93; 95% confidence interval: 0.67, 1.28). Confirmed objective response rate with ABCPem/Pac versus BCPem/Pac was 48% versus 50%, respectively; median duration of response was 11.3 versus 8.3 months. Adverse events of special interest for atezolizumab were observed in 68% (grades 3 and 4: 11%) and 71% (grades 3 and 4: 7%) of patients receiving ABCPem/Pac and BCPem/Pac, respectively. The most common adverse events of special interest for atezolizumab in the ABCPem/Pac and BCPem/Pac arms were hepatitis (driven by laboratory abnormalities; mostly low grade), hypothyroidism and rash. Overall, IMpower151 did not meet its primary endpoint (INV-PFS) in metastatic nsqNSCLC. ABCPem/Pac was generally well tolerated, with no new safety signals. Trial registration number: ClinicalTrials.gov, NCT02366143