Study of Pemetrexed+Platinum Chemotherapy With or Without Pembrolizumab (MK-3475) in Participants With First Line Metastatic Nonsquamous Non-small Cell Lung Cancer (MK-3475-189/KEYNOTE-189)-Japan Extension Study

Summary

This is a Japan Extension Study of Global Study MK-3475-189 (NCT02578680). This is an efficacy and safety study of pembrolizumab (MK-3475) combined with pemetrexed/platinum chemotherapy versus pemetrexed/platinum chemotherapy alone in adult Japanese participants with advanced or metastatic nonsquamous non-small cell lung cancer (NSCLC) who have not previously received systemic therapy for advanced disease. Participants will be randomly assigned to receive pembrolizumab combined with pemetrexed/platinum (Investigators choice of cisplatin or carboplatin), OR pemetrexed/platinum (Investigators choice of cisplatin or carboplatin). With Amendment 11 (effective date 31-Jan-2022), once the study objectives have been met or the study has ended, participants will be discontinued from this study and will be enrolled in an extension study to continue protocol-defined assessments and treatment. The primary hypothesis is that pembrolizumab in combination with pemetrexed/platinum chemotherapy prolongs Progression-Free Survival (PFS) and Overall Survival (OS) compared to pemetrexed/platinum chemotherapy alone.

Timeline

Start

2016-02-22

Primary completion

2019-05-20

Completion

2023-06-22

Outcome

Mixed primary results

registry p = 0.12511; Hazard Ratio (HR) 0.62 (95% CI 0.27 to 1.42); Log Rank NCT03950674 ↗

registry p = 0.03127; Hazard Ratio (HR) 0.29 (95% CI 0.07 to 1.15); Log Rank NCT03950674 ↗

Publications

• Results Horinouchi H, Nogami N, Saka H, Nishio M, Tokito T, Takahashi T, Kasahara K, Hattori Y, Ichihara E, Adachi N, Noguchi K, Souza F, Kurata T. Pembrolizumab plus pemetrexed-platinum for metastatic nonsquamous non-small-cell lung cancer: KEYNOTE-189 Japan Study. Cancer Sci. 2021 Aug;112(8):3255-3265. doi: 10.1111/cas.14980. Epub 2021 Jun 15.
• Gadgeel SM, Rodriguez-Abreu D, Halmos B, Garassino MC, Kurata T, Cheng Y, Jensen E, Shamoun M, Rajagopalan K, Paz-Ares L. Pembrolizumab Plus Chemotherapy for Metastatic NSCLC With Programmed Cell Death Ligand 1 Tumor Proportion Score Less Than 1%: Pooled Analysis of Outcomes After Five Years of Follow-Up. J Thorac Oncol. 2024 Aug;19(8):1228-1241. doi: 10.1016/j.jtho.2024.04.011. Epub 2024 Apr 18.
• Cheng Y, Yang JC, Okamoto I, Zhang L, Hu J, Wang D, Hu C, Zhou J, Wu L, Cao L, Liu J, Zhang H, Sun H, Wang Z, Gao H, Yan Y, Xiao S, Lin J, Pietanza MC, Kurata T. Pembrolizumab plus chemotherapy for advanced non-small-cell lung cancer without tumor PD-L1 expression in Asia. Immunotherapy. 2023 Sep;15(13):1029-1044. doi: 10.2217/imt-2023-0043. Epub 2023 Jul 19.
• Rolfo C, Hess LM, Jen MH, Peterson P, Li X, Liu H, Lai Y, Sugihara T, Kiiskinen U, Vickers A, Summers Y. External control cohorts for the single-arm LIBRETTO-001 trial of selpercatinib in RET+ non-small-cell lung cancer. ESMO Open. 2022 Aug;7(4):100551. doi: 10.1016/j.esmoop.2022.100551. Epub 2022 Aug 2.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	Pembrolizumab	Monoclonal antibody	200 mg	Intravenous
Background	Carboplatin	Small molecule	5 unknown	Intravenous
Background	Cisplatin	Other / unclassified	75 mg/m2	Intravenous
Background	Dexamethasone	Small molecule	4 mg	Oral
Background	Pemetrexed	Small molecule	500 mg/m2	Intravenous

Indications