ClinicalTrials.gg
CompletedNCT02563002Updated Oct 3, 2024Results posted

Study of Pembrolizumab (MK-3475) vs Standard Therapy in Participants With Microsatellite Instability-High (MSI-H) or Mismatch Repair Deficient (dMMR) Stage IV Colorectal Carcinoma (MK-3475-177/KEYNOTE-177)

A Phase 3 interventional study of mFOLFOX6 and FOLFIRI in Colorectal Carcinoma, sponsored by Merck Sharp & Dohme LLC. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-10-03.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Treatment

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Phase 3
Study type
Interventional
Enrollment
307
Allocation
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
5th of 33
307 · median 45
Started
2015
with 6 others
Phase 3
4 of 33
none open now
Registered
9th 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 5th largest by enrollment, is one of 7 that started in 2015, is one of 4 in phase 3, and was the 9th 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.

Was this useful?
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

In this study, participants with stage IV Microsatellite Instability-High (MSI-H) or Mismatch Repair Deficient (dMMR) colorectal carcinoma (CRC) will be randomly assigned to receive either pembrolizumab or the Investigator's choice of 1 of 6 standard of care (SOC) chemotherapy regimens for the treatment of advanced colorectal carcinoma. The primary study hypothesis is that pembrolizumab will prolong progression-free survival (PFS) or overall survival (OS) compared to current SOC chemotherapy.

03

Conditions studied

  • Colorectal Carcinoma

Keywords

  • Programmed Cell Death Receptor 1 (PD-1)
  • Programmed Cell Death Receptor Ligand 1 (PD-L1, PDL1)
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

  • Locally confirmed dMMR or MSI-H stage IV colorectal carcinoma
  • (ECOG) performance status of 0 or 1 within 10 days prior to study start
  • of at least 3 months
  • Female participants of must be willing to use adequate for the course of the study starting with the first dose of study medication through 180 days after the last dose of standard of care (SOC) therapy or 120 days after the last pembrolizumab dose
  • Male participants must agree to use adequate contraception for the course of the study starting with the first dose of study medication through 180 days after the last dose of study medication for chemotherapy arm (no contraception requirement for pembrolizumab [MK-3475] arm)
  • Adequate organ function

Exclusion criteria

Exclusion Criteria:

  • Has received prior systemic therapy for Stage IV colorectal cancer. May have received prior chemotherapy for colorectal cancer as long as it was completed at least 6 months prior to randomization on this study
  • Currently participating and receiving treatment in another study, or participated in a study of an agent and received treatment, or used an investigational device within 4 weeks of randomization
  • Active disease that has required systemic treatment in past 2 years
  • Diagnosis of immunodeficiency or receiving systemic therapy or any other form of therapy within 7 days prior to randomization on this study
  • Radiation therapy within 4 weeks prior to randomization on this study and not recovered to baseline from adverse events due to radiation therapy
  • Known active central nervous system (CNS) and/or carcinomatous meningitis
  • Major surgical procedure, open or significant traumatic injury within 28 days prior to randomization on this study
  • Has received prior therapy with an (e.g., anti-programmed cell death [PD]-1, anti-PD ligand 1 [L1], anti-PD-L2 agent, or anti-cytotoxic T-lymphocyte-associated protein 4 [CTLA-4] agent, etc.)
  • Another that is progressing or requires active treatment with the exception of non-melanomatous skin cancer that has undergone potentially curative therapy and in situ cervical carcinoma
  • Received a live or a within 30 days of planned start of study medication
  • Known history of (HIV), or C
  • Known history of, or any evidence of interstitial lung disease or active, non-infectious pneumonitis
  • Known history of active tuberculosis (Bacillus tuberculosis [TB])
  • Active infection requiring systemic therapy
  • Known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the study
  • Pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 180 days after the last dose of SOC (for male and female participants) or 120 days after the last dose of pembrolizumab (for female participants only)
Terms in these criteria, in plain language(17)

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.

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.

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.

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.

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.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

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.

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.

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.

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.

Metastases

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

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

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.

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.

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.

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.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
307 participants (actual)

Study arms

  • Experimental
    Pembrolizumab

    Participants receive pembrolizumab 200 mg intravenously (IV) on Day 1 of each 21-day cycle (Q3W) for up to 35 treatments (approximately 2 years). Participants that have stopped the initial course of pembrolizumab and have stable disease but progress after discontinuation can initiate a second course of pembrolizumab for up to 17 cycles (approximately 1 year additional).

    Biological: Pembrolizumab

  • Active comparator
    Standard of Care (SOC)

    Participants receive 1 of 6 possible standard chemotherapy regimens: mFOLFOX6, or mFOLFOX6+bevacizumab 5 mg/kg IV on Day 1 of each 2-week cycle, or mFOLFOX6+cetuximab 400 mg/m\^2 IV over 2 hours then 250 mg/m\^2 over 1 hour weekly in each 2-week cycle, or FOLFIRI, or FOLFIRI+bevacizumab 5 mg/kg IV on Day 1 of each 2-week cycle, or FOLFIRI+cetuximab 400 mg/m\^2 IV over 2 hours then 250 mg/m\^2 over 1 hour weekly in each 2-week cycle. Participants with documented disease progression following chemotherapy can crossover to receive pembrolizumab for up to 35 cycles (approximately 2 years). Participants that have stopped pembrolizumab and have stable disease but progress after discontinuation can initiate a second course of pembrolizumab for up to 17 cycles (approximately 1 year additional).

    Drug: mFOLFOX6 · Drug: FOLFIRI · Biological: Pembrolizumab · Biological: Bevacizumab · Biological: Cetuximab

Interventions

  • DrugmFOLFOX6

    Regimen consists of oxaliplatin 85 mg/m\^2 IV on Day 1, leucovorin 400 mg/m\^2 or levoleucovorin 200 mg/m\^2 IV on Day 1, 5-fluorouracil (5-FU) 400 mg/m\^2 IV bolus on Day 1 and then 1200 mg/m\^2/day IV over 2 days for total dose of 2400 mg/m\^2 in each 2-week cycle

  • DrugFOLFIRI

    Regimen consists of irinotecan 180 mg/m\^2 IV on Day 1, leucovorin 400 mg/m\^2 or levoleucovorin 200 mg/m\^2 IV on Day 1, 5-FU 400 mg/m\^2 IV bolus on Day 1 and then 1200 mg/m\^2/day IV over 2 days for total dose of 2400 mg/m\^2 in each 2-week cycle

  • BiologicalPembrolizumab

    IV infusion

    Also known as: MK-3475, SCH 900475, KEYTRUDA®

  • BiologicalBevacizumab

    IV infusion

  • BiologicalCetuximab

    IV infusion

06

What researchers measure

Primary outcomes

  1. Progression-Free Survival (PFS) Per RECIST1.1 As Assessed by Central Imaging Vendor

    PFS was defined as the time from randomization to the first documented disease progression (PD) per RECIST 1.1 based on blinded central imaging vendor review or death due to any cause, whichever occurs first. Per RECIST 1.1, PD was defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum had to demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions was also considered PD. Hazards ratio (HR) and associated 95% confidence intervals (CIs) from a Cox proportional hazard model with Efron's method of tie handling and with a single treatment covariate was presented for the first course study treatment per protocol.

    Time frame: Up to approximately 59 months

  2. Overall Survival (OS)

    OS was defined as the time from randomization to death due to any cause. Participants without documented death at the time of analysis were censored at the date of last known contact. HR and associated 95% CIs from a Cox proportional hazard model with Efron's method of tie handling and with a single treatment covariate was presented for the first course study treatment per protocol.

    Time frame: Up to approximately 59 months

Secondary outcomes

  1. Overall Response Rate (ORR) Per RECIST1.1 as Assessed by Central Imaging Vendor

    ORR was defined as the percentage of the participants who experienced a 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) and was assessed using RECIST 1.1 as assessed by the central imaging vendor. The percentage of participants who experienced a CR or PR was presented for the first course of study treatment per protocol.

    Time frame: Up to approximately 59 months

  2. Number of Participants Who Experienced an Adverse Event (AE)

    An AE was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a study treatment and which does not necessarily have to have a causal relationship with this treatment. An AE could be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change infrequency and/or intensity) of a preexisting condition that was temporally associated with the use of study treatment, was also an AE. The number of participants who experienced at least one AE was presented for the first course study treatment per protocol.

    Time frame: Up to approximately 59 months

  3. Number of Participants Who Discontinued Study Treatment Due to an AE

    An AE was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a study treatment and which does not necessarily have to have a causal relationship with this treatment. An AE could be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change infrequency and/or intensity) of a preexisting condition that was temporally associated with the use of study treatment, was also an AE. The number of participants who discontinued study treatment due to an AE was presented for the first course study treatment per protocol.

    Time frame: Up to approximately 59 months

07

Results

Posted Mar 16, 2022

Participant flow

Participant flow — Overall Study
MilestonePembrolizumabStandard of Care (SOC)
Started153154
Treated153143
Received second course of pembrolizumab125
Switched over to pembrolizumab07
Completed00
Not completed153154
Withdrew: Death7287
Withdrew: Lost to follow-up50
Withdrew: Physician decision02
Withdrew: Withdrawal by subject210
Withdrew: Sponsor decision7455

Outcome measures

PrimaryProgression-Free Survival (PFS) Per RECIST1.1 As Assessed by Central Imaging Vendor

PFS was defined as the time from randomization to the first documented disease progression (PD) per RECIST 1.1 based on blinded central imaging vendor review or death due to any cause, whichever occurs first. Per RECIST 1.1, PD was defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum had to demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions was also considered PD. Hazards ratio (HR) and associated 95% confidence intervals (CIs) from a Cox proportional hazard model with Efron's method of tie handling and with a single treatment covariate was presented for the first course study treatment per protocol.

Time frame:
Up to approximately 59 months
Reported as:
Median · Months
Progression-Free Survival (PFS) Per RECIST1.1 As Assessed by Central Imaging Vendor
MonthsPembrolizumabStandard of Care (SOC)
Progression-Free Survival (PFS) Per RECIST1.1 As Assessed by Central Imaging Vendor16.5 (5.4 to 38.1)8.2 (6.1 to 10.2)
Statistical analysis
  • Pembrolizumab vs Standard of Care (SOC) · Log Rank · p = 0.0001 · Hazard ratio (hr): 0.59 · 95% CI 0.45 to 0.79Based on Cox regression model with Efron's method of tie handling with treatment as a covariate.
PrimaryOverall Survival (OS)

OS was defined as the time from randomization to death due to any cause. Participants without documented death at the time of analysis were censored at the date of last known contact. HR and associated 95% CIs from a Cox proportional hazard model with Efron's method of tie handling and with a single treatment covariate was presented for the first course study treatment per protocol.

Time frame:
Up to approximately 59 months
Reported as:
Median · Months
Overall Survival (OS)
MonthsPembrolizumabStandard of Care (SOC)
Overall Survival (OS)NA (49.2 to NA)36.7 (27.6 to NA)
Statistical analysis
  • Pembrolizumab vs Standard of Care (SOC) · Log Rank · p = 0.0359 · Hazard ratio (hr): 0.74 · 95% CI 0.53 to 1.03Based on Cox regression model with Efron's method of tie handling with treatment as a covariate.
SecondaryOverall Response Rate (ORR) Per RECIST1.1 as Assessed by Central Imaging Vendor

ORR was defined as the percentage of the participants who experienced a 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) and was assessed using RECIST 1.1 as assessed by the central imaging vendor. The percentage of participants who experienced a CR or PR was presented for the first course of study treatment per protocol.

Time frame:
Up to approximately 59 months
Reported as:
Number · Percentage of Participants
Overall Response Rate (ORR) Per RECIST1.1 as Assessed by Central Imaging Vendor
Percentage of ParticipantsPembrolizumabStandard of Care (SOC)
Overall Response Rate (ORR) Per RECIST1.1 as Assessed by Central Imaging Vendor45.1 (37.1 to 53.3)33.1 (25.8 to 41.1)
Statistical analysis
  • Pembrolizumab vs Standard of Care (SOC) · Miettinen & Nurminen method · p = 0.0159 (One-sided p-value based on Miettinen \& Nurminen method.) · Difference in percentage: 12.0 · 95% CI 1.0 to 22.6Based on Miettinen \& Nurminen method.
SecondaryNumber of Participants Who Experienced an Adverse Event (AE)

An AE was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a study treatment and which does not necessarily have to have a causal relationship with this treatment. An AE could be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change infrequency and/or intensity) of a preexisting condition that was temporally associated with the use of study treatment, was also an AE. The number of participants who experienced at least one AE was presented for the first course study treatment per protocol.

Time frame:
Up to approximately 59 months
Reported as:
Count of participants · Participants
Number of Participants Who Experienced an Adverse Event (AE)
ParticipantsPembrolizumabStandard of Care (SOC)
Number of Participants Who Experienced an Adverse Event (AE)149142
SecondaryNumber of Participants Who Discontinued Study Treatment Due to an AE

An AE was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a study treatment and which does not necessarily have to have a causal relationship with this treatment. An AE could be any unfavourable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change infrequency and/or intensity) of a preexisting condition that was temporally associated with the use of study treatment, was also an AE. The number of participants who discontinued study treatment due to an AE was presented for the first course study treatment per protocol.

Time frame:
Up to approximately 59 months
Reported as:
Count of participants · Participants
Number of Participants Who Discontinued Study Treatment Due to an AE
ParticipantsPembrolizumabStandard of Care (SOC)
Number of Participants Who Discontinued Study Treatment Due to an AE2120

Adverse events

Collected over Up to approximately 91 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pembrolizumab First Course68/153 (44.4%)62/153 (40.5%)145/153 (94.8%)
Standard of Care (SOC) First Course58/154 (37.7%)76/143 (53.1%)142/143 (99.3%)
SOC Switched Over to Pembrolizumab30/57 (52.6%)27/57 (47.4%)53/57 (93%)
Pembrolizumab Second Course4/12 (33.3%)3/12 (25%)11/12 (91.7%)
SOC Switched Over to Pembrolizumab-Second Course2/5 (40%)1/5 (20%)4/5 (80%)
Most frequent serious events
Showing 10 of 178
Most frequent serious events
EventPembrolizumab First CourseStandard of Care (SOC) First CourseSOC Switched Over to PembrolizumabPembrolizumab Second CourseSOC Switched Over to Pembrolizumab-Second Course
Acute kidney injuryRenal and urinary disorders3/1532/1433/570/121/5
Adrenal insufficiencyEndocrine disorders2/1530/1430/571/120/5
COVID-19Infections and infestations0/1530/1430/571/120/5
HypoglycaemiaMetabolism and nutrition disorders0/1530/1430/571/120/5
Tumour painNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/1530/1430/571/120/5
DiarrhoeaGastrointestinal disorders4/1539/1431/570/120/5
Small intestinal obstructionGastrointestinal disorders2/1535/1433/570/120/5
Abdominal painGastrointestinal disorders7/1532/1432/570/120/5
Febrile neutropeniaBlood and lymphatic system disorders1/1536/1430/570/120/5
PneumoniaInfections and infestations3/1532/1432/570/120/5
Most frequent other events
Showing 10 of 107
Most frequent other events
EventPembrolizumab First CourseStandard of Care (SOC) First CourseSOC Switched Over to PembrolizumabPembrolizumab Second CourseSOC Switched Over to Pembrolizumab-Second Course
DiarrhoeaGastrointestinal disorders65/15389/14317/572/120/5
NauseaGastrointestinal disorders47/15385/14316/571/120/5
FatigueGeneral disorders58/15370/1439/572/120/5
Decreased appetiteMetabolism and nutrition disorders36/15357/1432/571/120/5
VomitingGastrointestinal disorders33/15353/14312/570/120/5
ConstipationGastrointestinal disorders26/15345/14313/570/120/5
StomatitisGastrointestinal disorders10/15343/1434/570/120/5
HeadacheNervous system disorders21/15322/14317/570/120/5
Abdominal painGastrointestinal disorders34/15341/1438/570/120/5
PruritusSkin and subcutaneous tissue disorders25/15312/14315/570/121/5

Baseline characteristics

All randomized participants

Age, Continuous
Age, Continuous(Years)PembrolizumabStandard of Care (SOC)Total
Mean61.9 ± 14.960.6 ± 14.861.2 ± 14.8
Sex: Female, Male
Sex: Female, Male(Participants)PembrolizumabStandard of Care (SOC)Total
Female8272154
Male7182153
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)PembrolizumabStandard of Care (SOC)Total
Hispanic or Latino111021
Not Hispanic or Latino128131259
Unknown or Not Reported141327
Race (NIH/OMB)
Race (NIH/OMB)(Participants)PembrolizumabStandard of Care (SOC)Total
American Indian or Alaska Native000
Asian242650
Native Hawaiian or Other Pacific Islander000
Black or African American9514
White113116229
More than one race000
Unknown or Not Reported7714
08

Study locations

No study locations are listed for this record.

09

References and documents

Publications

  • Diaz LA Jr, Shiu KK, Kim TW, Jensen BV, Jensen LH, Punt C, Smith D, Garcia-Carbonero R, Benavides M, Gibbs P, de la Fourchardiere C, Rivera F, Elez E, Le DT, Yoshino T, Zhong WY, Fogelman D, Marinello P, Andre T; KEYNOTE-177 Investigators. Pembrolizumab versus chemotherapy for microsatellite instability-high or mismatch repair-deficient metastatic colorectal cancer (KEYNOTE-177): final analysis of a randomised, open-label, phase 3 study. Lancet Oncol. 2022 May;23(5):659-670. doi: 10.1016/S1470-2045(22)00197-8. Epub 2022 Apr 12. PubMed 35427471 ↗
  • Andre T, Amonkar M, Norquist JM, Shiu KK, Kim TW, Jensen BV, Jensen LH, Punt CJA, Smith D, Garcia-Carbonero R, Sevilla I, De La Fouchardiere C, Rivera F, Elez E, Diaz LA Jr, Yoshino T, Van Cutsem E, Yang P, Farooqui M, Le DT. Health-related quality of life in patients with microsatellite instability-high or mismatch repair deficient metastatic colorectal cancer treated with first-line pembrolizumab versus chemotherapy (KEYNOTE-177): an open-label, randomised, phase 3 trial. Lancet Oncol. 2021 May;22(5):665-677. doi: 10.1016/S1470-2045(21)00064-4. Epub 2021 Apr 1. PubMed 33812497 ↗
  • Andre T, Shiu KK, Kim TW, Jensen BV, Jensen LH, Punt C, Smith D, Garcia-Carbonero R, Benavides M, Gibbs P, de la Fouchardiere C, Rivera F, Elez E, Bendell J, Le DT, Yoshino T, Van Cutsem E, Yang P, Farooqui MZH, Marinello P, Diaz LA Jr; KEYNOTE-177 Investigators. Pembrolizumab in Microsatellite-Instability-High Advanced Colorectal Cancer. N Engl J Med. 2020 Dec 3;383(23):2207-2218. doi: 10.1056/NEJMoa2017699. PubMed 33264544 ↗

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 Nov 2015 to primary completion in Feb 2021, 62 months.

Results were first posted in Mar 2022, 1 year after primary completion.

Of 69 industry-sponsored phase 3 interventional studies under Colorectal Neoplasms, half reached primary completion within 43 months of starting (the median), counting those still running; a quarter within 26 and three quarters within 54. This study's 62 months is above that.

Counting every sponsor, half of 175 studies reached it within 50 months; a quarter within 35 and three quarters within 79.

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

Registered
Sep 28, 2015
First posted
Sep 29, 2015
StartActual
Nov 30, 2015
Primary completionActual
Feb 19, 2021
CompletionActual
Jul 17, 2023
Results first posted
Mar 16, 2022
Last update
Oct 3, 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 Oct 3, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02563002
Responsible party
Sponsor
First posted
Sep 29, 2015
Start date
Nov 30, 2015
Primary completion
Feb 19, 2021
Completion
Jul 17, 2023
Results posted
Mar 16, 2022
Last update
Oct 3, 2024

Study contacts

Medical Director
study director · Merck Sharp & Dohme LLC

Oversight

Data monitoring committee
Yes
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 Sep 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Pembrolizumab

Start the discussion