Study of Pembrolizumab (MK-3475) as First-Line Monotherapy and Combination Therapy for Treatment of Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (MK-3475-062/KEYNOTE-062)
Summary
This is a study of pembrolizumab (MK-3475) as first-line treatment for participants with advanced gastric or gastroesophageal junction (GEJ) adenocarcinoma. Participants whose tumors express programmed death-ligand 1 (PD-L1) will be randomly assigned to one of the three treatment arms of the study: pembrolizumab as monotherapy \[pembro mono\], pembrolizumab plus standard of care (SOC) chemotherapy with cisplatin plus 5-fluorouracil (5-FU) or capecitabine \[pembro combo\], or placebo plus SOC chemotherapy with cisplatin plus 5-fluorouracil (5-FU) or capecitabine \[SOC\]. The primary study hypotheses are that pembrolizumab in combination with SOC chemotherapy is superior to SOC chemotherapy alone in terms of Progression-free Survival (PFS) and Overall Survival (OS) in participants with PD-L1 Combined Positive Score (CPS) ≥1, pembrolizumab in combination with SOC chemotherapy is superior to SOC chemotherapy alone in terms of OS in participants with PD-L1 CPS ≥10, pembrolizumab monotherapy is non-inferior to SOC chemotherapy alone in terms of OS in participants with PD-L1 CPS ≥1, and pembrolizumab monotherapy is superior to SOC chemotherapy alone in terms of OS in participants with PD-L1 CPS ≥1 and in participants with PD-L1 CPS ≥10.
Timeline
- Start
- 2015-07-31
- Primary completion
- 2019-03-26
- Completion
- 2022-06-06
Outcome
Mixed primary results
registry Pembrolizumab + SOC Chemotherapy (Pembro Combo) vs Placebo + SOC Chemotherapy (SOC); p = 0.03918; Hazard Ratio (HR) 0.84 NCT02494583 ↗
registry Pembrolizumab + SOC Chemotherapy (Pembro Combo) vs Placebo + SOC Chemotherapy (SOC); p = 0.15804; Hazard Ratio (HR) 0.85 NCT02494583 ↗
registry Pembrolizumab Monotherapy (Pembro Mono) vs Placebo + SOC Chemotherapy (SOC); p = 0.01491; Hazard Ratio (HR) 0.69 NCT02494583 ↗
Publications
- Janjigian YY, Cecchini M, Shitara K, Enzinger PC, Wainberg ZA, Chau I, Satoh T, Lee J, Nebozhyn M, Loboda A, Kobie J, Vajdi A, Shih CS, Cristescu R, Cao ZA. Genomic Landscape of Late-Stage Gastric Cancer: Analysis From KEYNOTE-059, KEYNOTE-061, and KEYNOTE-062 Studies. JCO Precis Oncol. 2025 Mar;9:e2400456. doi: 10.1200/PO-24-00456. Epub 2025 Mar 21.
- Muro K, Shitara K, Yamaguchi K, Yoshikawa T, Satake H, Hara H, Sugimoto N, Machida N, Goto M, Kawakami H, Amagai K, Omuro Y, Esaki T, Hironaka S, Nishina T, Komatsu Y, Matsubara H, Shiratori S, Han S, Satoh T, Ohtsu A. Efficacy of Pembrolizumab Monotherapy in Japanese Patients with Advanced Gastric or Gastroesophageal Junction Cancer. J Gastrointest Cancer. 2023 Sep;54(3):951-961. doi: 10.1007/s12029-023-00920-9. Epub 2023 Apr 10.
- Satake H, Lee KW, Chung HC, Lee J, Yamaguchi K, Chen JS, Yoshikawa T, Amagai K, Yeh KH, Goto M, Chao Y, Lam KO, Han SR, Shiratori S, Shah S, Shitara K. Pembrolizumab or pembrolizumab plus chemotherapy versus standard of care chemotherapy in patients with advanced gastric or gastroesophageal junction adenocarcinoma: Asian subgroup analysis of KEYNOTE-062. Jpn J Clin Oncol. 2023 Mar 7;53(3):221-229. doi: 10.1093/jjco/hyac188.
- Lee KW, Van Cutsem E, Bang YJ, Fuchs CS, Kudaba I, Garrido M, Chung HC, Lee J, Castro HR, Chao J, Wainberg ZA, Cao ZA, Aurora-Garg D, Kobie J, Cristescu R, Bhagia P, Shah S, Tabernero J, Shitara K, Wyrwicz L. Association of Tumor Mutational Burden with Efficacy of Pembrolizumab+/-Chemotherapy as First-Line Therapy for Gastric Cancer in the Phase III KEYNOTE-062 Study. Clin Cancer Res. 2022 Aug 15;28(16):3489-3498. doi: 10.1158/1078-0432.CCR-22-0121.
- Chao J, Fuchs CS, Shitara K, Tabernero J, Muro K, Van Cutsem E, Bang YJ, De Vita F, Landers G, Yen CJ, Chau I, Elme A, Lee J, Ozguroglu M, Catenacci D, Yoon HH, Chen E, Adelberg D, Shih CS, Shah S, Bhagia P, Wainberg ZA. Assessment of Pembrolizumab Therapy for the Treatment of Microsatellite Instability-High Gastric or Gastroesophageal Junction Cancer Among Patients in the KEYNOTE-059, KEYNOTE-061, and KEYNOTE-062 Clinical Trials. JAMA Oncol. 2021 Jun 1;7(6):895-902. doi: 10.1001/jamaoncol.2021.0275.
- Shitara K, Van Cutsem E, Bang YJ, Fuchs C, Wyrwicz L, Lee KW, Kudaba I, Garrido M, Chung HC, Lee J, Castro HR, Mansoor W, Braghiroli MI, Karaseva N, Caglevic C, Villanueva L, Goekkurt E, Satake H, Enzinger P, Alsina M, Benson A, Chao J, Ko AH, Wainberg ZA, Kher U, Shah S, Kang SP, Tabernero J. Efficacy and Safety of Pembrolizumab or Pembrolizumab Plus Chemotherapy vs Chemotherapy Alone for Patients With First-line, Advanced Gastric Cancer: The KEYNOTE-062 Phase 3 Randomized Clinical Trial. JAMA Oncol. 2020 Oct 1;6(10):1571-1580. doi: 10.1001/jamaoncol.2020.3370.
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Pembrolizumab | Monoclonal antibody | 200 mg | Intravenous |
| Background | Capecitabine | Small molecule | 1000 mg/m2 | Oral |
| Background | Cisplatin | Other / unclassified | 80 mg/m2 | Intravenous |
| Background | fluorouracil | Small molecule | 800 mg/m2 | Intravenous |