A Study of Pembrolizumab (MK-3475) in Combination With Chemotherapy or Immunotherapy in Participants With Non-small Cell Lung Cancer (MK-3475-021/KEYNOTE-021)
CompletedPhase 1, PHASE2Results postedLast updated 8 November 2022
What this trial tests
Phase 1, PHASE2 trial testing Pembrolizumab in Non-small Cell Lung Carcinoma in 267 participants. Completed in 18 October 2021.
18 and older, any sex, with Non-small Cell Lung Carcinoma. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Part 2 Cohorts G+ and G-: Objective Response Rate (ORR)Primary· Up to approximately 2 years
ORR was defined as the percentage of participants in the analysis population who had 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) per Response Criteria in Solid Tumors version 1.1 (RECIST 1.1) as assessed by blinded independent central review (BICR).
Group
Value
95% CI
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
55.0
41.6 – 67.9
Part 2 Cohort G- (Placebo+Pe+C)
28.6
17.9 – 41.3
Part 2 Cohorts D4 and H: Objective Response Rate (ORR)Primary· Up to approximately 2 years
For participants who demonstrated a confirmed response (Complete Response \[CR\]: Disappearance of all target lesions or Partial Response \[PR\]: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1. Per RECIST 1.1, DOR was defined as the time from first documented evidence of CR or PR until disease progression or death. DOR was assessed by BICR.
Group
Value
95% CI
Part 2 Cohorts D4 & H (Pembro 2mg/kg+I)
29.5
16.8 – 45.2
All Cohorts: Number of Participants Who Experienced a Dose-limiting Toxicity (DLT)Primary· Cycle 1 (Up to 21 days)
DLTs were assessed using the National Cancer Institute Common Terminology Criteria for Adverse Events version 4. A DLT was defined as any of the following events: Grade 4 non-hematologic toxicity (not laboratory); Grade 4 hematologic toxicity lasting ≥7 days; Grade 3 non-hematologic toxicity (not laboratory, specifically nausea, vomiting and diarrhea) lasting \>3 days despite optimal supportive care; Any Grade 3 or Grade 4 non-hematologic laboratory value requiring treatment or hospitalization, or persisting for \>1 week; Febrile neutropenia Grade 3 or Grade 4; Qualifying thrombocytopenia \<25
Part 1 Cohort B2 (Pembro 2mg/kg+Pa+C+Bevacizumab [B])
0
Part 1 Cohort B10 (Pembro 10 mg/kg+Pa+C+B)
0
Part 1 Cohort C2 (Pembro 2 mg/kg+Pemetrexed [Pe]+C)
0
Part 1 Cohort C10 (Pembro 10 mg/kg+Pe+C)
0
Part 1 Cohort D1 (Pembro 10mg/kg+Ipilimumab [I])
0
Part 1 Cohort D2 (Pembro 10 mg/kg+I)
0
Part 1 Cohort D4 (Pembro 2 mg/kg+I)
0
Part 1 Cohort E (Pembro 2 mg/kg+Erlotinib)
0
Part 1 Cohort F (Pembro 2 mg/kg+Gefitinib)
0
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
0
Part 2 Cohorts G+ and G-: Progression-Free Survival (PFS)Secondary· Up to approximately 2 years
PFS was defined as the time from randomization to the first documented disease progression, or death due to any cause, whichever occurred first. Per RECIST 1.1, progressive disease was defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions was also considered progression. PFS was assessed by BICR.
Group
Value
95% CI
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
24.5
9.7 – 36.3
Part 2 Cohort G- (Placebo+Pe+C)
9.9
6.2 – 15.2
Part 2 Cohorts G+ and G-: Overall Survival (OS)Secondary· Up to approximately 2 years
OS was defined as the time from randomization to death due to any cause.
Group
Value
95% CI
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
34.5
24.0 – NA
Part 2 Cohort G- (Placebo+Pe+C)
21.1
14.9 – 35.6
Part 2 Cohorts G+ and G-: Duration of Response (DOR)Secondary· Up to approximately 2 years
For participants who demonstrated a confirmed response (Complete Response \[CR\]: Disappearance of all target lesions or Partial Response \[PR\]: At least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1. Per RECIST 1.1, DOR was defined as the time from first documented evidence of CR or PR until disease progression or death. DOR was assessed by BICR.
Group
Value
95% CI
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
NA
NA – NA
Part 2 Cohort G- (Placebo+Pe+C)
NA
NA – NA
Adverse events — posted to ClinicalTrials.gov
Time frame: Up to approximately 92 months (Up to 90 days after last dose of study treatment).
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
Part 1 Cohort A10 (Pembro10mg/kg+Pa+C)
Serious: 5/12 (42%)
Deaths: 10/12
Part 1 Cohort A2 (Pembro 2 mg/kg+Paclitaxel [Pa]+Carboplatin [C])
Serious: 7/13 (54%)
Deaths: 10/13
Cohort A Second Course (Pembro 2 mg/kg Monotherapy)
Serious: 0/2 (0%)
Deaths: 2/2
Part 1 Cohort B10 (Pembro 10 mg/kg+Pa+C+B)
Serious: 8/13 (62%)
Deaths: 11/13
Part 1 Cohort B2 (Pembro 2mg/kg+Pa+C+Bevacizumab [B])
Serious: 8/11 (73%)
Deaths: 9/12
Cohort B Second Course (Pembro 2 mg/kg Monotherapy)
Serious: 0/1 (0%)
Deaths: 1/1
Part 1 Cohort C10 (Pembro 10 mg/kg+Pe+C)
Serious: 7/12 (58%)
Deaths: 11/12
Part 1 Cohort C2 (Pembro 2 mg/kg+Pemetrexed [Pe]+C)
Serious: 6/12 (50%)
Deaths: 8/12
Part 1 Cohort D1 (Pembro 10 mg/kg+Ipilimumab [I])
Serious: 1/3 (33%)
Deaths: 3/3
Part 1 Cohort D2 (Pembro 10 mg/kg+I)
Serious: 1/3 (33%)
Deaths: 3/3
Part 1 Cohort D4 (Pembro 2 mg/kg+I)
Serious: 5/12 (42%)
Deaths: 11/12
Part 1 Cohort E (Pembro 2 mg/kg+Erlotinib)
Serious: 8/12 (67%)
Deaths: 5/12
Part 1 Cohort F (Pembro 2 mg/kg+Gefitinib)
Serious: 5/7 (71%)
Deaths: 7/7
Cohort E Second Course (Pembro 2 mg/kg Monotherapy)
Serious: 0/1 (0%)
Deaths: 0/1
Part 2 Cohort G+ (Pembro 200 mg+Pe+C)
Serious: 30/59 (51%)
Deaths: 42/60
Part 2 Cohort G- (Placebo+Pe+C)
Serious: 21/62 (34%)
Deaths: 47/63
Cohort G+ Second Course (Pembro 200 mg Monotherapy)
Serious: 0/2 (0%)
Deaths: 1/2
Cohort G Crossover (Pembro 200 mg Monotherapy)
Serious: 7/28 (25%)
Deaths: 24/28
Part 2 Cohort H (Pembro 2mg/kg+I)
Serious: 12/33 (36%)
Deaths: 31/33
Serious adverse events (116 terms)
Reaction
System
Part 1 Cohort A10 (Pembro1…
Part 1 Cohort A2 (Pembro 2…
Cohort A Second Course (Pe…
Part 1 Cohort B10 (Pembro …
Part 1 Cohort B2 (Pembro 2…
Cohort B Second Course (Pe…
Part 1 Cohort C10 (Pembro …
Part 1 Cohort C2 (Pembro 2…
Part 1 Cohort D1 (Pembro 1…
Part 1 Cohort D2 (Pembro 1…
Part 1 Cohort D4 (Pembro 2…
Part 1 Cohort E (Pembro 2 …
Part 1 Cohort F (Pembro 2 …
Cohort E Second Course (Pe…
Part 2 Cohort G+ (Pembro 2…
Part 2 Cohort G- (Placebo+…
Cohort G+ Second Course (P…
Cohort G Crossover (Pembro…
Part 2 Cohort H (Pembro 2m…
Cellulitis
Infections and infestations
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Alanine aminotransferase increased
Investigations
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Aspartate aminotransferase increased
Investigations
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Acute kidney injury
Renal and urinary disorders
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Pyrexia
General disorders
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Pneumonia
Infections and infestations
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Pleural effusion
Respiratory, thoracic and mediastinal disorders
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Anaemia
Blood and lymphatic system disorders
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Febrile neutropenia
Blood and lymphatic system disorders
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Pancytopenia
Blood and lymphatic system disorders
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Abdominal pain
Gastrointestinal disorders
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Small intestinal obstruction
Gastrointestinal disorders
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General disorders
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Fatigue
General disorders
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Sepsis
Infections and infestations
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Cerebrovascular accident
Nervous system disorders
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Encephalopathy
Nervous system disorders
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Chronic obstructive pulmonary disease
Respiratory, thoracic and mediastinal disorders
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Dyspnoea
Respiratory, thoracic and mediastinal disorders
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Pneumonitis
Respiratory, thoracic and mediastinal disorders
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Neutropenia
Blood and lymphatic system disorders
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Thrombocytopenia
Blood and lymphatic system disorders
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Aortic valve disease
Cardiac disorders
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Arteriosclerosis coronary artery
Cardiac disorders
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Atrial fibrillation
Cardiac disorders
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Other adverse events (393 terms — click to expand)
The purpose of this study is to determine the safety, tolerability, and efficacy of pembrolizumab (MK-3475) in combination with chemotherapy or immunotherapy in participants with unresectable or metastatic non-small cell lung cancer (NSCLC).
Publications & conference data
8 peer-reviewed publications reference this trial (live from Europe PMC):
NCT07572123 — Evaluating the Addition of Maintenance Immunotherapy Compared to the Usual Treatment of Chemotherapy and Autologous Stem
· Phase 2, PHASE3
· not yet recruiting
NCT07275216 — Pembrolizumab in Combination With Chemotherapy for the Treatment of Frail Hodgkin Lymphoma Patients Ineligible for Stand
· Phase 2
· not yet recruiting
NCT07302347 — A Study of Pembrolizumab in Japanese Pediatric Participants With Solid Tumors or Lymphomas and Japanese Adult Participan
· Phase 1, PHASE2
· recruiting
NCT06724042 — Study of ISM5939 in Patients With Advanced and/or Metastatic Solid Tumors
· Phase 1
· not yet recruiting
NCT07383441 — Adding Biotherapy or Placebo to Standard Treatment for Advanced Kidney Cancer
· Phase 3
· not yet recruiting
Other recruiting trials for Non-small Cell Lung Carcinoma
Currently open trials in the same condition.
NCT04042701 — DS8201a and Pembrolizumab in Participants With Locally Advanced/Metastatic Breast or Non-Small Cell Lung Cancer
· Phase 1
· active not recruiting
Other Merck Sharp & Dohme LLC trials
Trials by the same sponsor.
NCT07224477 — A Clinical Study of V540A in Healthy Female Participants (V540A-005)
· Phase 2
· not yet recruiting
NCT07302347 — A Study of Pembrolizumab in Japanese Pediatric Participants With Solid Tumors or Lymphomas and Japanese Adult Participan
· Phase 1, PHASE2
· recruiting
NCT07528508 — A Clinical Trial in Healthy Participants to Study the Effect of a Single Dose of MK-8527 on Levels of Methadone (MK-8527
· Phase 1
· not yet recruiting
NCT07513376 — A Clinical Trial of Adjuvant Intismeran (V940) With or Without Pembrolizumab Coformulated With Berahyaluronidase Alfa (M
· Phase 3
· not yet recruiting
NCT07532304 — A Clinical Trial of MK-4646 With Bictegravir/Emtricitabine/Tenofovir Alafenamide and Dolutegravir in Healthy Adult Parti
· Phase 1
· not yet recruiting
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Merck Sharp & Dohme LLC
Last refreshed: 8 November 2022
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT02039674.