ClinicalTrials.gg
CompletedNCT03374254Updated Nov 21, 2024Results posted

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 1 interventional study of Pembrolizumab and Binimetinib in Metastatic Colorectal Cancer, sponsored by Merck Sharp & Dohme LLC. Completed at 14 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-11-21.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 1, Interventional, and Treatment

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Phase
Phase 1
Study type
Interventional
Enrollment
116
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 33 studies testing pembrolizumab in Colorectal Neoplasms — 5 open to participants now, 10 under way, 1 of them phase 3. pembrolizumab · Colorectal Neoplasms.

Enrollment
8th of 33
116 · median 45
Started
2018
with 2 others
Phase 1
5 of 33
none open now
Registered
14th of 33
by date
Lead sponsor
7 of 33
Merck Sharp & Dohme LLC

Among the 33 studies testing pembrolizumab in Colorectal Neoplasms, this one is the 8th largest by enrollment, is one of 3 that started in 2018, is one of 5 in phase 1, and was the 14th registered.

Colorectal Neoplasms

6,545 studies on the registry are indexed under Colorectal Neoplasms; 1,664 are open to participants now.

Browse Colorectal Neoplasms studies →

Open to participants now

5 of the 33 studies testing pembrolizumab in Colorectal Neoplasms are open now, in 4 countries. Recruiting first, the newest first:

By country, each count listing its studies:

All 5 open studies →

About pembrolizumab

pembrolizumab: first FDA approval 2014 (KEYTRUDA), first EMA approval 2015. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 1,181 Colorectal Neoplasms studies recruiting now, 764 (65%) set no upper age limit and 264 (22%) stop at 75 or younger; 48 take children under 18; 123 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 33 studies testing pembrolizumab in Colorectal Neoplasms, or all of them as a file.
02

Study 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).

03

Conditions studied

  • Metastatic Colorectal Cancer

Keywords

  • CRC, MSS, non-MSI-H, PD-1, anti-PD-1, anti PD-1, MEK, MEK inhibitor
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • At least 18 years of age
  • Has a -confirmed, unresectable or (Stage IV American Joint Committee on Cancer [AJCC seventh edition]) colorectal cancer (CRC)
  • Has a locally determined non microsatellite instability high/ proficient mismatch repair (non-MSI-H/pMMR) tumor status
  • Has at least 1 radiologically as defined by 1.1
  • Has an (ECOG) performance status of 0 or 1
  • Has a of at least 3 months
  • Has the ability to swallow and retain oral medication and not have any gastrointestinal abnormalities that might alter absorption.
  • Has adequate organ function
  • Male participants must agree to use during the treatment period and for ≥180 days, after the last dose of study treatment and refrain from donating sperm during this period. Male participants with pregnant partners must agree to use a condom
  • Female participants eligible to participate if not pregnant, not breastfeeding, and is not a woman of (WOCBP) or is a WOCBP who agrees to follow contraceptive guidance during the treatment period and for ≥180 days after the last dose of study treatment

    • Participants for Cohort A:
  • Has been previously treated with fluoropyrimidine, irinotecan, and oxaliplatin

    • Participants for Cohorts B and C:
  • Must not have received prior systemic chemotherapy for Stage IV CRC

    • Participants for Cohorts D and E:
  • Must have been previously treated with 1 including a fluoropyrimidine plus an oxaliplatin-based regimen

    • Participants for Cohorts A, C, and E:
  • Have a 12-lead (ECG) and echocardiogram (ECHO) or multigated acquisition () scan performed by the investigator or other qualified person to evaluate cardiac function prior to enrollment in the study

Exclusion criteria

Exclusion Criteria:

  • Is currently participating and receiving study therapy in a study of an agent or has participated and received study therapy in a study of an investigational agent or has used an investigational device within 28 days of administration of MK-3475
  • Has had chemotherapy, definitive radiation, or biological cancer therapy within 4 weeks (prior to the first dose of study therapy, or has not recovered to (CTCAE) Gr 1 or better from any AEs that were due to cancer therapeutics administered more than 4 weeks earlier
  • Has history of a second , unless potentially curative treatment has been completed with no evidence of malignancy for 2 years
  • Has clinically active central nervous system (CNS) and/or carcinomatous meningitis
  • Has a known , intolerability or to any component of study treatment, including premedication
  • Has any active infection requiring systemic therapy
  • Has a history of (non-infectious) pneumonitis that required or has current pneumonitis
  • Has received prior therapy with compounds targeting programmed death (PD)-1, , PD-L2, or a mitogen-activated protein kinase (MAPK) pathway inhibitor
  • Has an disease that has required systemic treatment in the past 2 years with use of disease modifying agents, corticosteroids, or drugs
  • Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to randomization
  • Has known history of (HIV) infection
  • Has a known history of
  • Has received within 30 days of the planned start of study therapy
  • Has undergone major surgery and has not recovered adequately from any toxicity and/or complications from the intervention prior to starting study therapy
  • Has baseline peripheral neuropathy/paresthesia
  • Has any medical, psychiatric, cognitive, or other conditions that may compromise the participant's ability to understand the participant information, give , comply with the study protocol, or complete the study.
  • Has symptomatic congestive heart failure (CHF)
  • Has a history of acute or chronic pancreatitis
  • Has existing uncontrolled arterial hypertension (systolic blood pressure [SBP] ≥150 mmHg or diastolic blood pressure [DBP] ≥100 mmHg) despite appropriate medical therapy
  • Has a history of thromboembolic or cerebrovascular events within 6 months prior to registration
  • Has neuromuscular disorders associated with an elevated creatine kinase
  • A who has a positive urine pregnancy test within 24 hours before the first dose of study treatment

    • Potential Participants for Cohorts A, C or E who are to Receive Binimetinib:
  • Has a history of, or current, retinal vein occlusion (RVO) or current risk factors for RVO
  • Has retinal degenerative disease

    • Potential Participants for Cohorts A, C, D or E:
  • Has a known history of Gilbert's Syndrome

    • Potential Participants for Cohorts D or E:
  • Has a previous treatment with irinotecan
  • Has plans to use, or is using, any herbal medications/supplements or any medications or foods that are strong inhibitors or inducers of cytochrome P450 3A 4/5 ≤1 week prior to the start of study treatment
Terms in these criteria, in plain language(25)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
116 participants (actual)

Study arms

  • Experimental
    Cohort A Part 1: Pembrolizumab +Binimetinib 30 mg

    Participants in Cohort A will receive pembrolizumab (200 mg) intravenous (IV) every 3 weeks (Q3W) plus binimetinib orally at of 30 mg twice a day (BID) until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Binimetinib

  • Experimental
    Cohort A Part 1: Pembrolizumab +Binimetinib 45 mg

    Participants in Cohort A will receive pembrolizumab (200 mg) IV Q3W plus binimetinib orally at 45 mg BID (Dose Level 2 \[DL2\]) until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Binimetinib

  • Experimental
    Cohort B Part 1: Pembrolizumab + mFOLFOX7

    Participants in Cohort B will receive pembrolizumab (200 mg) IV Q3W plus mFOLFOX7 (oxaliplatin 85 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; fluorouracil \[5-FU\] 2400 mg/m\^2 over 46-48 hours) IV Q2W until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Oxaliplatin · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU]

  • Experimental
    Cohort B Part 2: Pembrolizumab + mFOLFOX

    During Part 2, participants in Cohort B will receive pembrolizumab (200 mg) IV Q3W plus mFOLFOX7 (oxaliplatin 85mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; fluorouracil \[5-FU\] 2400 mg/m\^2 over 46-48 hours) IV Q2W until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Oxaliplatin · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU]

  • Experimental
    Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg

    Participants in Cohort C will receive pembrolizumab 200 mg IV Q3W plus mFOLFOX7 (oxaliplatin 85mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; fluorouracil \[5-FU\] 2400 mg/m\^2 over 46-48 hours) IV Q2W in combination with binimetinib orally at a starting dose of 30 mg BID until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Binimetinib · Drug: Oxaliplatin · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU]

  • Experimental
    Cohort D Part 1: Pembrolizumab + FOLFIRI

    Participants in Cohort D will receive a standard dose (DL1) of pembrolizumab 200 mg IV Q3W plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) IV Q2W until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU] · Drug: Irinotecan

  • Experimental
    Cohort D Part 2: Pembrolizumab + FOLFIRI

    During Part 2, participants in Cohort D will receive pembrolizumab 200 mg IV Q3W plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU] · Drug: Irinotecan

  • Experimental
    Cohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg

    Participants in Cohort E will receive pembrolizumab 200 mg IV Q3W plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) Q2W in combination with binimetinib orally at a starting dose of 30 mg BID until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Binimetinib · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU] · Drug: Irinotecan

  • Experimental
    Cohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg

    During Part 2, participants in Cohort E received pembrolizumab 200 mg IV Q3W plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) Q2W plus binimetinib orally at the starting dose of 45 mg BID until disease progression or discontinuation. Cohort A During Part 2, participants in Cohort E received pembrolizumab 200 mg IV Q3W plus FOLFIRI (irinotecan 180 mg/m\^2; leucovorin \[calcium folinate\] 400 mg/m\^2; 5-FU 2400 mg/m\^2 over 46-48 hours) Q2W plus binimetinib orally at the starting dose of 45 mg BID until disease progression or discontinuation.

    Biological: Pembrolizumab · Drug: Binimetinib · Drug: Leucovorin · Drug: 5-Fluorouracil [5-FU] · Drug: Irinotecan

Interventions

  • BiologicalPembrolizumab

    200 mg Pembrolizumab solution for IV infusion Q3W

    Also known as: MK-3475

  • tablet orally BID at 30 or 45 mg depending upon DLT profile

    Also known as: MEK162, ARRY-162, ARRY-438162

  • 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.

  • 400 mg/m\^2 as IV infusion. Administered Q2W as part of mFOLFOX7 or FOLFIRI cocktail, depending upon allocation.

    Also known as: calcium folinate

  • 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.

  • 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.

06

What researchers measure

Primary outcomes

  1. Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)

    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).

    Time frame: Up to approximately first 28 days of treatment

Secondary outcomes

  1. Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)

    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.

    Time frame: Up to Approximately 64 months

07

Results

Posted Oct 15, 2024

Participant flow

Participant flow — Overall Study
MilestoneCohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg
Started6161516111616911
Treated6141516111616911
Completed000000000
Not completed6161516111616911
Withdrew: Death51613119121167
Withdrew: Lost to follow-up000000200
Withdrew: Sponsor decision102323334
Withdrew: Withdrawal by subject000201000

Outcome measures

PrimaryPercentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)

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).

Time frame:
Up to approximately first 28 days of treatment
Reported as:
Number · Percetange of Participants
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)
Percetange of ParticipantsCohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BID
Percentage of Participants Who Experienced Dose-Limiting Toxicity (DLT)16.7 (4.0 to 39.1)0.0 (0.0 to 10.2)0.0 (0.0 to 9.6)27.3 (13.4 to 45.0)7.1 (1.4 to 19.4)33.3 (17.0 to 53.1)45.5 (28.4 to 63.3)
SecondaryObjective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)

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.

Time frame:
Up to Approximately 64 months
Reported as:
Number · Percentage of participants
Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)
Percentage of participantsCohort ACohort BCohort CCohort DCohort E
Objective Response Rate (ORR) Per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)0.0 (0.0 to 16.8)61.3 (42.2 to 78.2)27.3 (6.0 to 61.0)25.0 (11.5 to 43.4)20.0 (5.7 to 43.7)

Adverse events

Collected over Up to approximately 64 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort A Part 1: Pembrolizumab +Binimetinib 30 mg5/6 (83.3%)1/6 (16.7%)6/6 (100%)
Cohort A Part 1: Pembrolizumab +Binimetinib 45 mg16/16 (100%)7/14 (50%)14/14 (100%)
Cohort B Part 1: Pembrolizumab + mFOLFOX713/15 (86.7%)5/15 (33.3%)15/15 (100%)
Cohort B Part 2: Pembrolizumab + mFOLFOX12/16 (75%)8/16 (50%)16/16 (100%)
Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mg9/11 (81.8%)7/11 (63.6%)11/11 (100%)
Cohort D Part 1: Pembrolizumab + FOLFIRI13/16 (81.3%)6/16 (37.5%)16/16 (100%)
Cohort D Part 2: Pembrolizumab + FOLFIRI11/16 (68.8%)2/16 (12.5%)16/16 (100%)
Cohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mg6/9 (66.7%)5/9 (55.6%)9/9 (100%)
Cohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg7/11 (63.6%)7/11 (63.6%)11/11 (100%)
Most frequent serious events
Showing 10 of 56
Most frequent serious events
EventCohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOXCohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg
Small intestinal obstructionGastrointestinal disorders0/61/140/151/162/111/160/161/90/11
PyrexiaGeneral disorders0/60/140/150/162/111/160/161/91/11
Intestinal obstructionGastrointestinal disorders1/60/140/150/160/110/160/160/90/11
Infusion related reactionInjury, poisoning and procedural complications0/60/141/152/160/110/160/160/91/11
Large intestine perforationGastrointestinal disorders0/60/140/150/161/110/160/161/90/11
VomitingGastrointestinal disorders0/61/140/150/161/110/160/161/91/11
Anal abscessInfections and infestations0/60/140/150/160/110/160/161/91/11
SyncopeNervous system disorders0/60/140/150/160/111/160/161/90/11
Confusional statePsychiatric disorders0/61/140/150/160/110/160/161/90/11
EmbolismVascular disorders0/60/140/150/160/111/160/161/90/11
Most frequent other events
Showing 10 of 478
Most frequent other events
EventCohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOXCohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 45 mg
NauseaGastrointestinal disorders1/67/1411/1512/169/119/167/168/911/11
DiarrhoeaGastrointestinal disorders5/68/1411/158/1610/1113/1612/168/99/11
VomitingGastrointestinal disorders2/67/144/1510/167/117/169/167/98/11
FatigueGeneral disorders4/610/1411/1511/167/119/168/167/97/11
Neuropathy peripheralNervous system disorders0/61/147/1512/168/112/160/161/91/11
Dermatitis acneiformSkin and subcutaneous tissue disorders4/65/143/153/168/112/161/166/95/11
PruritusSkin and subcutaneous tissue disorders1/62/144/157/161/117/164/166/92/11
ConstipationGastrointestinal disorders1/64/147/1510/167/116/163/164/96/11
Abdominal painGastrointestinal disorders2/62/143/152/166/116/1610/163/94/11
AnaemiaBlood and lymphatic system disorders1/62/144/155/163/119/163/165/94/11

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Cohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BIDTotal
Mean55.0 ± 9.359.4 ± 11.355.5 ± 11.650.3 ± 12.054.8 ± 14.156.3 ± 11.752.5 ± 13.857.9 ± 11.448.2 ± 10.454.4 ± 12.1
Sex: Female, Male
Sex: Female, Male(Participants)Cohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BIDTotal
Female1117331155450
Male5581385114766
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Cohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BIDTotal
Hispanic or Latino0111230008
Not Hispanic or Latino615131591316810105
Unknown or Not Reported0010000113
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Cohort A Part 1: Pembrolizumab +Binimetinib 30 mgCohort A Part 1: Pembrolizumab +Binimetinib 45 mgCohort B Part 1: Pembrolizumab + mFOLFOX7Cohort B Part 2: Pembrolizumab + mFOLFOX7Cohort C Part 1: Pembrolizumab + mFOLFOX7 + Binimetinib 30 mgCohort D Part 1: Pembrolizumab + FOLFIRICohort D Part 2: Pembrolizumab + FOLFIRICohort E Part 1: Pembrolizumab + FOLFIRI + Binimetinib 30 mgCohort E Part 1: MK-3475 200 mg Q3W + FOLFIRI Q2W + Binimetinib 45 mg BIDTotal
American Indian or Alaska Native0000000000
Asian1130021109
Native Hawaiian or Other Pacific Islander0000000000
Black or African American1000202016
White41511159141381099
More than one race0010000001
Unknown or Not Reported0001000001
08

Study locations

14 sites
  • City of Hope National Medical Center ( Site 0102)
    Duarte, California 91010, United States
  • Anschutz Medical Campus, Anschutz Cancer Pavilion ( Site 0106)
    Aurora, Colorado 80045, United States
  • Yale Cancer Center ( Site 0108)
    New Haven, Connecticut 06520, United States
  • Moffitt Cancer Center ( Site 0111)
    Tampa, Florida 33612, United States
  • University of Chicago ( Site 0105)
    Chicago, Illinois 60637, United States
  • Rutgers Cancer Institute of New Jersey ( Site 0107)
    New Brunswick, New Jersey 08903-2681, United States
  • UPMC Cancer Center/Hillman Cancer Center ( Site 0113)
    Pittsburgh, Pennsylvania 15232, United States
  • Baylor Scott and White ( Site 0110)
    Temple, Texas 76508, United States
  • Seattle Cancer Care Alliance ( Site 0104)
    Seattle, Washington 98109, United States
  • Northwest Medical Specialties, PLLC ( Site 0101)
    Tacoma, Washington 98405, United States
  • Cross Cancer Institute ( Site 0123)
    Edmonton, Alberta T6G 1Z2, Canada
  • Princess Margaret Cancer Centre ( Site 0122)
    Toronto, Ontario M5G 2M9, Canada
  • Centre Hospitalier de l Universite de Montreal - CHUM ( Site 0124)
    Montreal, Quebec H2X 3E4, Canada
  • Jewish General Hospital ( Site 0121)
    Montreal, Quebec H3T 1E2, Canada
09

References and documents

Publications

  • Chen EX, Kavan P, Tehfe M, Kortmansky JS, Sawyer MB, Chiorean EG, Lieu CH, Polite B, Wong L, Fakih M, Spencer K, Chaves J, Li C, Leconte P, Adelberg D, Kim R. Pembrolizumab Plus Binimetinib With or Without Chemotherapy for MSS/pMMR Metastatic Colorectal Cancer: Outcomes From KEYNOTE-651 Cohorts A, C, and E. Clin Colorectal Cancer. 2024 Jun;23(2):183-193. doi: 10.1016/j.clcc.2024.03.002. Epub 2024 Apr 1. PubMed 38653648 ↗
  • Kim R, Tehfe M, Kavan P, Chaves J, Kortmansky JS, Chen EX, Lieu CH, Wong L, Fakih M, Spencer K, Zhao Q, Predoiu R, Li C, Leconte P, Adelberg D, Chiorean EG. Pembrolizumab Plus mFOLFOX7 or FOLFIRI for Microsatellite Stable/Mismatch Repair-Proficient Metastatic Colorectal Cancer: KEYNOTE-651 Cohorts B and D. Clin Colorectal Cancer. 2024 Jun;23(2):118-127.e6. doi: 10.1016/j.clcc.2024.03.001. Epub 2024 Apr 1. PubMed 38762348 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

Data sharing details ↗ · engagezone.msd.com

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2018 to primary completion in Sep 2021, 42 months.

Results were first posted in Oct 2024, 3 years 1 month after primary completion.

Of 268 industry-sponsored phase 1 interventional studies under Colorectal Neoplasms, half reached primary completion within 47 months of starting (the median), counting those still running; a quarter within 31 and three quarters within 66. This study's 42 months is below that.

Counting every sponsor, half of 434 studies reached it within 48 months; a quarter within 31 and three quarters within 69.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 12, 2017
First posted
Dec 15, 2017
StartActual
Feb 16, 2018
Primary completionActual
Sep 8, 2021
CompletionActual
Jul 18, 2023
Results first posted
Oct 15, 2024
Last update
Nov 21, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 21, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03374254
Collaborators
Array BioPharma
Responsible party
Sponsor
First posted
Dec 15, 2017
Start date
Feb 16, 2018
Primary completion
Sep 8, 2021
Completion
Jul 18, 2023
Results posted
Oct 15, 2024
Last update
Nov 21, 2024

Study contacts

Medical Director
study director · Merck Sharp & Dohme LLC

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: Pembrolizumab · Binimetinib

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