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A Study to Evaluate the Safety and Efficacy of Pembrolizumab (MK-3475) Coformulated With Berahyaluronidase Alfa (MK-3475A) in Participants With Relapsed or Refractory Classical Hodgkin Lymphoma (rrcHL) or Relapsed or Refractory Primary Mediastinal Large B-cell Lymphoma (rrPMBCL)(MK-3475A-F65)

A Phase 2 Study to Evaluate the Pharmacokinetics, Efficacy, and Safety of Subcutaneous Pembrolizumab Coformulated With Hyaluronidase (MK-3475A) in Participants With Relapsed or Refractory Classical Hodgkin Lymphoma (rrcHL) or Relapsed or Refractory Primary Mediastinal Large B-cell Lymphoma (rrPMBCL)

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06504394
Enrollment
66
Registered
2024-07-16
Start date
2024-10-14
Completion date
2028-11-08
Last updated
2026-02-09

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

Conditions

Classical Hodgkin Lymphoma Recurrent, Classical Hodgkin Lymphoma Refractory, Primary Mediastinal Large B-cell Lymphoma Recurrent, Primary Mediastinal Large B-cell Lymphoma Refractory

Keywords

Programmed Cell Death-1 (PD1, PD-1), Programmed Death-Ligand 1 (PDL1, PD-L1), Programmed Cell Death-2 (PD2, PD-2), Programmed Death-Ligand 2 (PDL2, PD-L2)

Brief summary

The primary purpose of the study is to assess the pharmacokinetics (PK) profile of pembrolizumab following subcutaneous (SC) injection of pembrolizumab coformulated with hyaluronidase, and to evaluate the objective response rate (ORR) of pembrolizumab (+) berahyaluronidase alfa SC in adult participants with Relapsed or Refractory Classical Hodgkin Lymphoma (rrcHL) or Relapsed or Refractory Primary Mediastinal Large B-cell Lymphoma (rrPMBCL). There is no formal hypothesis to be tested for this study.

Interventions

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

The main inclusion criteria include but are not limited to the following: * Histologically confirmed diagnosis of classical Hodgkin lymphoma (cHL) or primary mediastinal B-cell lymphoma (PMBCL) * Radiographically measurable cHL or PMBCL disease assessed by investigator as per Lugano classification * Have a life expectancy of \>3 months * Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on antiretroviral therapy (ART) * Participants who are hepatitis B surface antigen (HBsAg) positive are eligible if they have received hepatitis B virus (HBV) antiviral therapy for at least 4 weeks, and have undetectable HBV viral load before enrollment * Participants with history of hepatitis C virus (HCV) infection are eligible if they have completed curative antiviral therapy at least 4 weeks before enrollment and HCV viral load is undetectable at screening * Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1 assessed within 7 days before or on the day of the first dose of study intervention

Exclusion criteria

The main

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR) per Lugano Classification Criteria as Assessed by InvestigatorUp to approximately 48 monthsORR is defined as the percentage of the participants who had complete response (CR) or partial response (PR) and will be evaluated using computed tomography (CT) and positron emission tomography (PET)-CT. Response was assessed based on the International Working Group Criteria: Lugano Classification (Cheson et al, Journal of Clinical Oncology, 2014). CR is complete metabolic (no/minimal fluorodeoxyglucose \[FDG\] uptake) and radiologic response (target lesions regress to ≤1.5 cm in longest transverse diameter of a lesion) and no new lesions. PR is partial metabolic (moderate/high FDG uptake) and radiologic response (≥50% decrease in sum of product diameters for multiple lesions of up to 6 target measurable nodes and extranodal sites, no increase in lesions, and spleen regressed by \>50% in length beyond normal). The percentage of participants who experience CR or PR as assessed by investigator will be presented.
Maximum Concentration (Cmax) of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with HyaluronidaseAt designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of Cmax. Cmax is defined as the peak concentration of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase.
Lowest Plasma Concentration (Ctrough) of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with HyaluronidaseAt designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of Ctrough. Ctrough is defined as the lowest concentration of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase.
Area Under the Concentration-Time Curve of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with Hyaluronidase from Week 0-Week 6 (AUC0-6weeks)At designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of AUC0-6weeks. AUC0-6 weeks is defined as area under concentration time curve over a 6-week dosing interval of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase.

Secondary

MeasureTime frameDescription
Duration of Response (DOR) per Lugano Classification Criteria as Assessed by InvestigatorUp to approximately 48 monthsFor participants who demonstrate a confirmed complete response (CR) or partial response (PR), DOR is defined as the time from CR or PR to documented disease progression or death. Participants are assessed using computed tomography (CT) and positron emission tomography (PET)-CT and response was evaluated based on the Lugano Classification (Cheson et al, Journal of Clinical Oncology, 2014). CR is complete metabolic (no/minimal fluorodeoxyglucose \[FDG\] uptake) and radiologic response (target lesions regress to ≤1.5 cm in longest transverse diameter of a lesion) and no new lesions. PR is partial metabolic (moderate/high FDG uptake) and radiologic response (≥50% decrease in sum of product diameters (SPD) for multiple lesions of up to 6 target measurable nodes and extranodal sites, no increase in lesions, and spleen regressed by \>50% in length beyond normal). DOR as assessed by the investigator will be presented.
Number of Participants with Antidrug Antibodies (ADA) Level of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with HyaluronidaseAt designated timepoints (Up to approximately 27 months)Blood samples will be collected at designated time points for the determination of the presence or absence of ADA of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase. The number of participants who develop ADA will be reported.
Maximum Concentration (Cmax) of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with Hyaluronidase at Steady-StateAt designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of Cmax. Cmax is defined as the peak concentration of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase at steady-state.
Lowest Plasma Concentration (Ctrough) of Pembrolizumab After Administration of SC Pembrolizumab Coformulated with Hyaluronidase at Steady-StateAt designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of Ctrough. Ctrough is defined as the lowest concentration of pembrolizumab after administration of SC pembrolizumab coformulated with hyaluronidase at steady-state.
Area Under the Concentration-Time Curve of Pembrolizumab After Administration of SC Pembrolizumab coformulated with Hyaluronidase from Week 0-Week 6 (AUC0-6weeks) at Steady-StateAt designated time points (up to ~6 weeks)Blood samples will be collected at designated timepoints for the determination of AUC0-6weeks. AUC0-6 weeks is defined as area under concentration time curve over a 6-week dosing interval of pembrolizumab coformulated with hyaluronidase at steady-state.
Number of Participants Experiencing an Adverse Event (AE)Up to approximately 30 monthsAn AE is defined as any untoward medical occurrence in a participant administered a study treatment which did not necessarily have to have a causal relationship with this treatment. An AE could be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition that is temporally associated with the use of study treatment, is also an AE. The number of participants who experience an AE will be reported.
Number of Participants Discontinuing Study Treatment due to an Adverse Event (AE)Up to approximately 2 yearsAn AE is defined as any untoward medical occurrence in a participant administered a study treatment which did not necessarily have to have a causal relationship with this treatment. An AE could be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of study treatment, whether or not considered related to the study treatment. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition that is temporally associated with the use of study treatment, is also an AE. The number of participants who discontinue study treatment due to an AE will be reported.

Countries

Australia, Chile, Germany, Mexico, New Zealand, Poland, South Korea, Spain, Turkey (Türkiye), United Kingdom, United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026