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Study to Evaluate the Safety and Efficacy of a Combination of Favezelimab (MK-4280) and Pembrolizumab (MK-3475) in Participants With Hematologic Malignancies (MK-4280-003)

A Phase 1/Phase 2 Clinical Study to Evaluate the Safety and Efficacy of a Combination of MK-4280 and Pembrolizumab (MK-3475) in Participants With Hematologic Malignancies

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03598608
Enrollment
137
Registered
2018-07-26
Start date
2018-10-17
Completion date
2026-01-28
Last updated
2026-02-05

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

Conditions

Hodgkin Disease, Lymphoma, Non-Hodgkin, Lymphoma, B-Cell

Keywords

programmed cell death 1 (PD-1, PD1), programmed cell death ligand 1 (PD-L1, PDL1), programmed cell death ligand 2 (PD-L2, PDL2)

Brief summary

This study will evaluate the safety and efficacy of favezelimab (MK-4280) in combination with pembrolizumab (MK-3475) using a non-randomized study design in participants with the following hematological malignancies: * classical Hodgkin lymphoma (cHL) * diffuse large B-cell lymphoma (DLBCL) * indolent non-Hodgkin lymphoma (iNHL) This study will also evaluate the safety and efficacy of pembrolizumab or favezelimab administered as monotherapy in participants with cHL using a 1:1 randomized study design. The study will have 2 phases: a safety lead-in and an efficacy expansion phase. The recommended Phase 2 dose (RP2D) will be determined in the safety lead-in phase by evaluating dose-limiting toxicities. There is no primary hypothesis for this study.

Detailed description

Per protocol amendment 7, the secondary serum concentration endpoints were removed and will not be reported.

Interventions

BIOLOGICALpembrolizumab

Administered as an IV infusion every 3 weeks (Q3W)

BIOLOGICALFavezelimab

Administered as an IV infusion Q3W

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Masking description

Participants in Part B: Randomized cHL-Monotherapy arm in the study will be randomized (1:1 ratio) to receive pembrolizumab or favezelimab.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Has measurable disease, defined as ≥1 lesion that can be accurately measured in 2 dimensions with diagnostic quality cross sectional anatomic imaging (computed tomography or magnetic resonance imaging). Minimum measurement must be \>15 mm in the longest diameter or \>10 mm in the short axis * Is able to provide a core or excisional tumor biopsy for biomarker analysis from an archival (within 3 months) or newly obtained biopsy at screening * Has a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG)

Exclusion criteria

* Has known clinically active central nervous system (CNS) involvement * Has received prior therapy with an anti-lymphocyte activation gene-3 (LAG-3) antibody * Has received chimeric antigen receptors (CAR)-T-cell therapy for cHL and DLBCL Cohorts * Has received prior anticancer therapy or thoracic radiation therapy within 14 days before the first dose of study treatment * Has ≥Grade 2 non-hematological residual toxicities from prior therapy * Has had a prior anticancer monoclonal antibody within 4 weeks prior to study Day 1 or who has not recovered (i.e., ≤Grade 1 or at baseline) from AEs due to agents administered ≥4 weeks earlier * Has received a live vaccine within 30 days prior to first dose of study treatment. Administration of killed vaccines are allowed * Has received an investigational agent or used an investigational device within 4 weeks prior to intervention administration * Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior the first dose of study drug * Has a known additional malignancy that is progressing or requires active treatment with the exception of basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy * Has active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs) * Has a history of (non-infectious) pneumonitis that required steroids or current pneumonitis * Has an active infection requiring intravenous systemic therapy * Has a known history of human immunodeficiency virus (HIV) infection * Has known, active hepatitis B or hepatitis C infection * Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 120 days after the last dose of study treatment * Has had an allogeneic hematopoetic stem cell/solid organ transplantation within the last 5 years

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Experiencing a Dose-limiting Toxicity (DLT)Cycle 1 (up to 21 days)DLT will be defined as any drug-related adverse event (AE) observed during the DLT evaluation period (Cycle 1) that results in a change to a given dose or a delay in initiating the next cycle and reported as the percentage of participants experiencing a DLT defined by the National Cancer Institute Common Terminology for Adverse Events version 4.0.
Percentage of Participants Experiencing an Adverse Event (AE)From time of signing informed consent form (ICF) until the end of follow-up (up to approximately 27 months)Percentage of participants experiencing an AE defined as any unfavorable and unintended sign, symptom, disease, or worsening of preexisting condition temporally associated with study therapy and irrespective of causality to study treatment
Percentage of Participants with Treatment Discontinuations Due to an AEFrom time of signing informed consent form (ICF) until the end of study treatment (up to approximately 24 months)Percentage of participants discontinuing study treatment due to an AE

Secondary

MeasureTime frameDescription
Objective Response Rate (ORR)Up to approximately 24 monthsORR is defined as the percentage of participants in the analysis population who had a Complete Response or a Partial Response per lymphoma disease response criteria (Cheson et. al., 2007) as assessed by the investigator.

Countries

Australia, Canada, Germany, Israel, Italy, United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026