NCT03374254

Safety and Efficacy of Pembrolizumab (MK-3475) Plus Binimetinib Alone or Pembrolizumab Plus Chemotherapy With or Without Binimetinib in Metastatic Colorectal Cancer (mCRC) Participants (MK-3475-651/KEYNOTE-651)

A Phase 1b Multi-cohort Study of the Combination of Pembrolizumab (MK-3475) Plus Binimetinib Alone or the Combination of Pembrolizumab Plus Chemotherapy With or Without Binimetinib in Participants With Metastatic Colorectal Cancer (KEYNOTE-651)

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 116 (actual)
• Sponsor: Merck Sharp & Dohme LLC · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine safety and tolerability and to establish a preliminary recommended Phase 2 dose (RP2D) for the following combinations: pembrolizumab plus binimetinib (Cohort A), pembrolizumab plus mFOLFOX7 (oxaliplatin 85 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; fluorouracil \[5-FU\] 2400 mg/m\^2) (Cohort B), pembrolizumab plus mFOLFOX7 and binimetinib (Cohort C), pembrolizumab plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\]400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) (Cohort D), and pembrolizumab plus FOLFIRI and binimetinib (Cohort E).

Conditions

• Metastatic Colorectal Cancer

Interventions

Type	Name	Description
BIOLOGICAL	Pembrolizumab	200 mg Pembrolizumab solution for IV infusion Q3W
DRUG	Binimetinib	tablet orally BID at 30 or 45 mg depending upon DLT profile
DRUG	Oxaliplatin	85 mg/m\^2 as IV infusion. Administered Q2W as part of mFOLFOX7 cocktail. Dose may be de-escalated to 70 mg/m\^2 if the standard dose of mFOLFOX7 is deemed too toxic per mTPI, based upon occurrence of DLTs.
DRUG	Leucovorin	400 mg/m\^2 as IV infusion. Administered Q2W as part of mFOLFOX7 or FOLFIRI cocktail, depending upon allocation.
DRUG	5-Fluorouracil [5-FU]	2400 mg/m\^2 over 46-48 hours as IV infusion. Administered Q2W as part of mFOLFOX7 or FOLFIRI cocktail, depending upon allocation. Dose may be de-escalated to 2000 mg/m\^2 if the standard dose of mFOLFOX7 or FOLFIRI is deemed too toxic per mTPI, based upon occurrence of DLTs.
DRUG	Irinotecan	180 mg/m\^2 as IV infusion. Administered Q2W as part of FOLFIRI cocktail. Dose may be de-escalated to 150 mg/m\^2 if the standard dose of FOLFIRI is deemed too toxic per mTPI, based upon occurrence of DLTs.

Timeline

• Start date: 2018-02-16
• Primary completion: 2021-09-08
• Completion: 2023-07-18
• First posted: 2017-12-15
• Last updated: 2024-11-21
• Results posted: 2024-10-15

Locations

14 sites across 2 countries: United States, Canada

Regulatory

• FDA-regulated drug study