Pembrolizumab Plus Epacadostat vs Pembrolizumab Plus Placebo in Metastatic Non-Small Cell Lung Cancer (KEYNOTE-654-05/ECHO-305-05)
The purpose of this study is to evaluate the efficacy and safety of pembrolizumab plus epacadostat compared to pembrolizumab plus placebo as first-line treatment in participants with metastatic non-small cell lung cancer (NSCLC) expressing high levels of programmed cell death ligand 1 (PD-L1).
Ask AI to explain this studyKey things to know
This describes the study’s primary purpose.
Plus 1 other study approaches.
These are broad labels—not an eligibility decision.
Checked against the public recordLast updated Aug 22, 2025 · Source: ClinicalTrials.gov
Ask the study team to confirm whether enrollment is open.
Interventional
Locations may change over time.
Study sponsor
What this study is about
- Purpose
- Treatment
- Study type
- Interventional
- Phase
- Phase 2
- Sponsor
- Incyte Corporation
- Interventions being studied
- Drug: Pembrolizumab; Drug: Epacadostat; Drug: Placebo
How this study is categorized
These labels come from structured fields and exact terms in the public record.
Who may be able to participate
The sponsor separates these requirements into two groups. You do not need to interpret them alone—use them to guide a conversation with the study team.
- Histologically or cytologically confirmed diagnosis of stage IV NSCLC without epidermal growth factor receptor (EGFR)-sensitizing mutation, ROS1 and/or anaplastic lymphoma kinase (ALK) translocation.
- Measurable disease based on RECIST 1.1.
- Tumor tissue that demonstrates programmed cell death ligand 1 (PD-L1) expression in ≥ 50% of tumor cells (tumor proportion score \[TPS\] ≥ 50%) as assessed by immunohistochemistry at a central laboratory.
- Life expectancy of at least 3 months.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
- Adequate organ function per protocol-defined criteria.
- Known untreated central nervous system metastases and/or carcinomatous meningitis.
- History of (noninfectious) pneumonitis that required systemic steroids or current pneumonitis/interstitial lung disease.
- Symptomatic ascites or pleural effusion.
- Known history of an additional malignancy, except if the participant has undergone potentially curative therapy with no evidence of that disease recurrence for 5 years since initiation of that therapy.
- Active autoimmune disease that has required systemic treatment in past 2 years.
- Has had an allogeneic tissue/solid organ transplant.
- Has a known history of human immunodeficiency virus (HIV) infection. HIV testing is not required unless mandated by the local health authority.
- Has known history of or is positive for active Hepatitis B (HBsAg reactive) or has active Hepatitis C (HCV RNA). Note: Testing must be performed to determine eligibility.
- History or presence of an abnormal electrocardiogram (ECG) that, in the Investigator's opinion, is clinically meaningful.
- Use of protocol-defined prior/concomitant therapy.
Important: This is the sponsor’s public criteria, not a determination of eligibility. The study team must review your individual situation.
U.S. locations
- Pacific Cancer Medical Center, Inc.Anaheim, California
- Innovative Clinical Research InstituteWhittier, California
- Florida Cancer Specialists (South Region)Fort Myers, Florida
- Florida Cancer Specialists (North Region)St. Petersburg, Florida
- Southeastern Regional Medical Center, Inc.Newnan, Georgia
- Anne Arundel Health System Research InstituteAnnapolis, Maryland
- Weinberg Cancer Institute at Franklin SquareBaltimore, Maryland
- Maryland Oncology Hematology, P.A.Rockville, Maryland
- UMass Memorial Medical CenterWorcester, Massachusetts
- Minnesota Oncology Hematology, PACoon Rapids, Minnesota
- Nebraska Cancer SpecialistsOmaha, Nebraska
- Allegheny General HospitalPittsburgh, Pennsylvania
Source and freshness
Processed from ClinicalTrials.gov. Last public update: Aug 22, 2025. Always confirm current availability with the study team.