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Trial · 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)

NCT03374254, Phase 1, Completed, Merck Sharp & Dohme LLC; results first posted 2024-10-15

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. 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). Trials, record NCT03374254. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03374254

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
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)
NCT number
NCT03374254
Status
Completed
Phases
Phase 1
Enrollment
116 participants, actual
Lead sponsor
Merck Sharp & Dohme LLC
Conditions
Metastatic Colorectal Cancer
Interventions
Pembrolizumab, Binimetinib, Oxaliplatin, Leucovorin, 5-Fluorouracil [5-FU], Irinotecan
First posted
2017-12-15
Last updated
2024-11-21
Results first posted
2024-10-15

Source ClinicalTrials.gov

Registered outcomes2

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryPercentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Up to approximately first 28 days of treatment
The occurrence of any of the following toxicities during Part 1 of the study (the first 21 days for Cohort A, first 28 days for Cohorts B,C, D, \& E), if possibly, probably or definitely related to study treatment, was considered a DLT: Grade (Gr) 4 non hematologic toxicity, Gr 4 hematologic toxicity lasting \>7 days, Gr 3 thrombocytopenia, Any non-hematologic AE ≥Gr 3 in severity, Any Gr 3 or Gr 4 non-hematologic laboratory value, Febrile neutropenia Gr 3 or Gr 4, Any prolonged delay in initiating study therapy due to a treatment-related AE that started during the DLT period, Any treatment-related toxicity that causes the participant to discontinue treatment during the DLT period, Missing \>25% of binimetinib doses as a result of drug-related AE(s), Gr 5 toxicity, Cardiac disorders and vascular disorders, Eye disorders (Retinopathy or retinal detachment Gr ≥ 3).
SecondaryObjective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Up to Approximately 64 months
ORR was determined in all participants and was defined as the percentage of participants who had a confirmed Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1 as assessed by Blinded Independent Central Review (BICR). The percentage of participants who experienced CR or PR is presented. Per Protocol, analysis was per cohort.

Outcomes2

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYPercentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Up to approximately first 28 days of treatment
Population based on all participants who received treatment and that were DLT Evaluable in Part 1 of study. These populations included all allocated participants in Part 1 who received at least 1 dose of study intervention according to the study intervention they received.
Percetange of ParticipantsNUMBER
SECONDARYObjective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Up to Approximately 64 months
The analysis population consisted of all evaluable participants for each cohort with a baseline scan with measurable disease by investigator assessment who received at least 1 dose of study treatment. Per protocol, the populations were analyzed by cohort and treatment combination (irrespective of dose); therefore, data by individual dose were not analyzed.
Percentage of participantsNUMBER

Results by group12

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort A Part 1: Pembrolizumab +Binimetinib 30 mg16.780% Confidence Interval 4.0 to 39.1Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort A Part 1: Pembrolizumab +Binimetinib 45 mg0.080% Confidence Interval 0.0 to 10.2Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort B Part 1: Pembrolizumab + mFOLFOX70.080% Confidence Interval 0.0 to 9.6Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg27.380% Confidence Interval 13.4 to 45.0Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort D Part 1: Pembrolizumab + FOLFIRI7.180% Confidence Interval 1.4 to 19.4Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg33.380% Confidence Interval 17.0 to 53.1Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)Cohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BID45.580% Confidence Interval 28.4 to 63.3Percetange of Participants
Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Cohort A0.095% Confidence Interval 0.0 to 16.8Percentage of participants
Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Cohort B61.395% Confidence Interval 42.2 to 78.2Percentage of participants
Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Cohort C27.395% Confidence Interval 6.0 to 61.0Percentage of participants

Participant flow36

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDCohort A Part 1: Pembrolizumab +Binimetinib 30 mg6
Overall StudySTARTEDCohort A Part 1: Pembrolizumab +Binimetinib 45 mg16
Overall StudySTARTEDCohort B Part 1: Pembrolizumab + mFOLFOX715
Overall StudySTARTEDCohort B Part 2: Pembrolizumab + mFOLFOX716
Overall StudySTARTEDCohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg11
Overall StudySTARTEDCohort D Part 1: Pembrolizumab + FOLFIRI16
Overall StudySTARTEDCohort D Part 2: Pembrolizumab + FOLFIRI16
Overall StudySTARTEDCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg9
Overall StudySTARTEDCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg11
Overall StudyTreatedCohort A Part 1: Pembrolizumab +Binimetinib 30 mg6

Adverse events4,806

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherAnaemiaBlood and lymphatic system disordersCohort A Part 1: Pembrolizumab +Binimetinib 30 mg161
otherAnaemiaBlood and lymphatic system disordersCohort A Part 1: Pembrolizumab +Binimetinib 45 mg2142
otherAnaemiaBlood and lymphatic system disordersCohort B Part 1: Pembrolizumab + mFOLFOX74157
otherAnaemiaBlood and lymphatic system disordersCohort B Part 2: Pembrolizumab + mFOLFOX5169
otherAnaemiaBlood and lymphatic system disordersCohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg3114
otherAnaemiaBlood and lymphatic system disordersCohort D Part 1: Pembrolizumab + FOLFIRI91621
otherAnaemiaBlood and lymphatic system disordersCohort D Part 2: Pembrolizumab + FOLFIRI3163
otherAnaemiaBlood and lymphatic system disordersCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg597
otherAnaemiaBlood and lymphatic system disordersCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg4115
otherFebrile neutropeniaBlood and lymphatic system disordersCohort A Part 1: Pembrolizumab +Binimetinib 30 mg060

Adverse event totals27

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityCohort A Part 1: Pembrolizumab +Binimetinib 30 mg56
Total, all-cause mortalityCohort A Part 1: Pembrolizumab +Binimetinib 45 mg1616
Total, all-cause mortalityCohort B Part 1: Pembrolizumab + mFOLFOX71315
Total, all-cause mortalityCohort B Part 2: Pembrolizumab + mFOLFOX1216
Total, all-cause mortalityCohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg911
Total, all-cause mortalityCohort D Part 1: Pembrolizumab + FOLFIRI1316
Total, all-cause mortalityCohort D Part 2: Pembrolizumab + FOLFIRI1116
Total, all-cause mortalityCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg69
Total, all-cause mortalityCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg711
Total, other adverse eventsCohort A Part 1: Pembrolizumab +Binimetinib 30 mg66

Papers2

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
38653648RESULTPubMed
38762348RESULTPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT03374254

GET https://conductscience.org/api/trials/v1/NCT03374254/flow?page=2