Efficacy and Safety of Pembrolizumab (MK-3475) With Platinum Doublet Chemotherapy as Neoadjuvant/Adjuvant Therapy for Participants With Resectable Stage II, IIIA, and Resectable IIIB (T3-4N2) Non-small Cell Lung Cancer (MK-3475-671/KEYNOTE-671)
Phase 3
Active, not recruiting
NCT03425643
| Condition | Non-small Cell Lung Cancer |
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| Phase | Phase 3 |
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| Sponsor | Merck Sharp & Dohme LLC |
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| Status | Active, not recruiting |
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| Enrollment | 797 participants |
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| Interventions | Pembrolizumab, Cisplatin, Gemcitabine, Pemetrexed |
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| Start date | Apr 24, 2018 |
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| Completion date | Jul 10, 2023 |
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| Results posted | Sep 19, 2024 |
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Summary
This trial will evaluate the safety and efficacy of pembrolizumab (MK-3475) in combination with platinum doublet neoadjuvant chemotherapy (NAC) before surgery \[neoadjuvant phase\], followed by pembrolizumab alone after surgery \[adjuvant phase\] in participants with resectable stage II, IIIA, and resectable IIIB (T3-4N2) non-small cell lung cancer (NSCLC). The primary hypotheses of this study are that neoadjuvant pembrolizumab (vs. placebo) in combination with NAC, followed by surgery and adjuvant pembrolizumab (vs. placebo) will improve: 1) event free survival (EFS) by biopsy assessed by local pathologist or by investigator-assessed imaging using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1); and 2) overall survival (OS).
Event Free Survival (EFS)
Up to approximately 5 years · Months
| NAC + Neoadjuvant/Adjuvant Pembrolizumab | 47.2 Months |
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| NAC + Neoadjuvant/Adjuvant Placebo | 18.3 Months |
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| p-value | <0.00001 |
| Hazard Ratio (HR) | 0.59 (95% CI 0.48–0.72) |
Overall Survival (OS)
Up to approximately 5 years · Months
| NAC + Neoadjuvant/Adjuvant Pembrolizumab | NA Months |
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| NAC + Neoadjuvant/Adjuvant Placebo | 52.4 Months |
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| p-value | 0.00517 |
| Hazard Ratio (HR) | 0.72 (95% CI 0.56–0.93) |
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