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A Phase 3, Randomized, Double-Blind Study of Pembrolizumab versus Placebo in Combination With Adjuvant Chemotherapy With or Without Radiotherapy for the Treatment of Newly Diagnosed High-Risk Endometrial Cancer After Surgery With Curative Intent (KEYNOTE-B21 / ENGOT-en11 / GOG-3053)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-501973-37-00
Acronym
MK-3475-B21
Enrollment
300
Registered
2023-08-07
Start date
2020-01-30
Completion date
Unknown
Last updated
2026-01-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometrial cancer

Brief summary

Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence, Overall Survival (OS)

Detailed description

Disease-Free Survival (DFS) as Assessed Radiographically by Blinded Independent Central Review (BICR) or by Histopathologic Confirmation of Suspected Disease Recurrence, Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Combined Positivity Score (CPS)-Determined Programmed Cell Death 1 Ligand 1 (PD-L1) Status, Overall Survival (OS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Combined Positivity Score (CPS)-Determined Programmed Cell Death 1 Ligand 1 (PD-L1) Status, Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Tumor Mutation Burden (TMB) Status, Overall Survival (OS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Tumor Mutation Burden (TMB) Status, Number of Participants Who Experience One or More Adverse Events (AEs), Number of Participants Who Discontinue Study Treatment Due to an Adverse Event (AE), Change from Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Global Health Status/Quality of Life (QoL) Score, Change from Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Physical Function Score, Change from Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Symptom Specific Scale for Endometrial Cancer (EORTC QLQ-EN24) Score

Interventions

DRUGKEYTRUDA 25 mg/mL concentrate for solution for infusion
DRUGPACLITAXEL
DRUGCARBOPLATIN
DRUGDOCETAXEL
DRUGCISPLATIN

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence, Overall Survival (OS)

Secondary

MeasureTime frame
Disease-Free Survival (DFS) as Assessed Radiographically by Blinded Independent Central Review (BICR) or by Histopathologic Confirmation of Suspected Disease Recurrence, Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Combined Positivity Score (CPS)-Determined Programmed Cell Death 1 Ligand 1 (PD-L1) Status, Overall Survival (OS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Combined Positivity Score (CPS)-Determined Programmed Cell Death 1 Ligand 1 (PD-L1) Status, Disease-Free Survival (DFS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Tumor Mutation Burden (TMB) Status, Overall Survival (OS) as Assessed Radiographically by Investigator or by Histopathologic Confirmation of Suspected Disease Recurrence by Tumor Mutation Burden (TMB) Status, Number of Part

Countries

Austria, Belgium, Czechia, Denmark, Finland, France, Germany, Greece, Italy, Norway, Poland, Spain, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026