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Efficacy and Safety Study of Pembrolizumab (MK-3475) Versus Paclitaxel in Asian Participants With Advanced Gastric or Gastroesophageal Junction Adenocarcinoma Who Progressed After First-line Therapy With Platinum and Fluoropyrimidine (MK-3475-063/KEYNOTE-063)

Gastroesophageal Junction Adenocarcinoma Clinical Trial

Official title:
A Phase III, Randomized, Open-label Clinical Trial of Pembrolizumab (MK-3475) Versus Paclitaxel in Asian Subjects With Advanced Gastric or Gastroesophageal Junction Adenocarcinoma Who Progressed After First-Line Therapy With Platinum and Fluoropyrimidine

Clinical Trial Summary

The study will compare the efficacy and safety of treatment with pembrolizumab (MK-3475) versus paclitaxel in Asian, programmed death-ligand 1 (PD-L1) positive participants with advanced gastric or gastroesophageal junction (GEJ) adenocarcinoma who have progressed after failure of any combination chemotherapy containing a platinum and a fluoropyrimidine agent. The primary study hypotheses are that pembrolizumab prolongs Overall Survival (OS) compared to paclitaxel and that pembrolizumab prolongs Progression-free Survival (PFS) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) assessed by blinded central radiologists' review compared to paclitaxel.

Clinical Trial Description

Once the participant has achieved the study objective or the study has ended, the participant will be discontinued from the study and may be enrolled in an extension study to continue protocol-defined assessments and treatment. Enrollment in the extension study will be conditional on participant consent. Treatment with pembrolizumab or paclitaxel will continue until documented disease progression, unacceptable adverse event(s), intercurrent illness that prevents further administration of treatment, investigator's decision to discontinue the participant, participant withdraws consent, pregnancy of the participant, participant receives 35 administrations (approximately 2 years) of pembrolizumab, or administrative reasons requiring cessation of treatment. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03019588
Study type Interventional
Source Merck Sharp & Dohme LLC
Contact
Status Terminated
Phase Phase 3
Start date February 16, 2017
Completion date June 29, 2021
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