CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 94 enrolled
Drug / intervention
favezelimab/pembrolizumab +2 morebiological
Likely dose
Favezelimab/pembrolizumab 800 mg/200 mg IV infusionAI-extracted
Key inclusion· 7
  • Histologically confirmed metastatic, unresectable colorectal adenocarcinoma
  • Measurable disease per RECIST 1.1
  • Prior treatment with radiographic progression or intolerance to standard therapy
  • Archival (≤5 years) or newly obtained tumor tissue sample for testing
Key exclusion· 10
  • Deficient mismatch repair/microsatellite instability-high (dMMR/MSI-H) tumor status
  • Active CNS metastases, carcinomatous meningitis, or leptomeningeal disease
  • History of acute or chronic pancreatitis
  • Neuromuscular disorders with elevated creatine kinase

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05600309
NCT05600309Phase 3Completed

A Phase 3 Study of MK-4280A (Coformulated Favezelimab [MK-4280] Plus Pembrolizumab [MK-3475]) Versus Standard of Care in Previously Treated Metastatic PD-L1 Positive Colorectal Cancer (KEYFORM-007)

Merck Sharp & Dohme LLC·interventional·Posted Oct 31, 2022·Updated Nov 26, 2025

In Brief

A Phase 3 clinical trial evaluating favezelimab/pembrolizumab, regorafenib, and 1 other intervention for Colorectal Cancer. Completed, enrolled 94 participants across 24 sites.

Detailed Summary

The purpose of this China extension study is to assess the safety and efficacy of coformulated favezelimab/pembrolizumab (MK-4280A) in adult Chinese participants with metastatic colorectal cancer. The study will also compare MK-4280A with the standard of care treatment of regorafenib and TAS-102 (trifluridine and tipiracil). The primary study hypothesis is that coformulated favezelimab/pembrolizumab (MK-4280A) is superior to standard of care with respect to overall survival.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesChina
Collaborators--

Timeline

Phase 3CompletedFinished
2023202420252026
First PostedOct 31, 2022
Enrollment StartJun 14, 2022
Primary CompletionAug 15, 2024
Study CompletionFeb 21, 2025
TodayJul 2, 2026
Enrollment to primary: 2.2 yearsPosted 3.7 years ago

Interventions

favezelimab/pembrolizumabbiological

Coformulated favezelimab/pembrolizumab (800 mg/200 mg), IV infusion

regorafenibdrug

Oral

TAS-102drug

Oral