Study of HPN217 in Participants With Relapsed/Refractory Multiple Myeloma MK-4002 (MK-4002-001)

NCT ID: NCT04184050

Last Updated: 2025-12-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-04-13

Study Completion Date

2026-12-31

Brief Summary

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Researchers want to learn if MK-4002 (also known as HPN217) can treat relapsed or refractory multiple myeloma (RRMM). The goals of this study are to learn about the safety of different doses of MK-4002 and how well people tolerate them. Researchers also want to learn what happens to different doses of MK-4002 in a person's body over time.

Detailed Description

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Conditions

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Multiple Myeloma in Relapse Multiple Myeloma Multiple Myeloma of Bone Multiple Myeloma With Failed Remission

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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MK-4002 monotherapy dose escalation

MK-4002 is intravenously (IV) administered once weekly in escalating doses.

Group Type EXPERIMENTAL

MK-4002

Intervention Type DRUG

IV infusion

MK-4002 dose escalation with extended dosing intervals

MK-4002 is IV administered once every 2 weeks.

Group Type EXPERIMENTAL

MK-4002

Intervention Type DRUG

IV infusion

Interventions

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MK-4002

IV infusion

Intervention Type DRUG

Other Intervention Names

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HPN217

Eligibility Criteria

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Inclusion Criteria

1. Patients ≥18 years of age at the time of signing informed consent
2. Documented RRMM for which no standard therapy options are anticipated to result in a durable remission. Relapse defined as progressive disease after initial response (minimal response \[MR\] or better) to previous treatment, more than 60 days after cessation of last treatment. Refractory disease defined as \<25% reduction in M protein or progression of disease during treatment or within 60 days after cessation of treatment.
3. Received at least 3 prior therapies (including proteasome inhibitor, immune modulatory drug, and an anti-CD38 antibody; patients should not be a candidate for or be intolerant of all established therapies known to provide clinical benefit in multiple myeloma).
4. Measurable disease defined as at least one of the following:

1. Serum M-protein ≥0.5 g/dL
2. Urine M-protein ≥200 mg/24 hours
3. Serum free light chain (FLC) assay: Involved FLC level ≥10 mg/dL (≥100 mg/L) and an abnormal serum FLC ratio (\<0.26 or \>1.65)
5. Resolved acute effects of any prior therapy to baseline severity or Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 Grade ≤1.

Exclusion Criteria

1. Plasma cell leukemia; non-secretory myeloma (e.g., solitary plasmacytoma)
2. Patients with only extramedullary relapse of multiple myeloma who do not meet requirement for measurable disease.
3. Prior autologous peripheral stem cell transplant or prior autologous bone marrow transplantation within \<90 days of the start of study
4. Prior allogeneic stem cell transplantation or solid organ transplantation within 12 months of Screening. However, any patient receiving immunosuppressive medication will be excluded.
5. History of or known or suspected autoimmune disease (exception(s): patients with vitiligo, resolved childhood atopic dermatitis, hypothyroidism, or hyperthyroidism that is clinically euthyroid at Screening are allowed). Other exceptions may be allowed following discussion with the Sponsor Medical Monitor for patients who have not received any treatment for their autoimmune disorder in the past 3 years
6. Second primary malignancy that has not been in remission for greater than 3 years. Exceptions that do not require a 3-year remission: non-melanoma skin cancer, resected melanoma in situ, in situ cervical cancer, adequately treated Stage I cancer from which the subject is currently in remission and has been in remission for ≥2 years, low-risk prostate cancer with Gleason score \<7 and prostate-specific antigen \<10 ng/mL
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Harpoon Therapeutics, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Merck Sharp & Dohme LLC

Locations

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Banner MD Anderson Cancer Center

Gilbert, Arizona, United States

Site Status

Mayo Clinic Arizona

Phoenix, Arizona, United States

Site Status

UC San Diego Moores Cancer Center

La Jolla, California, United States

Site Status

The University of Kansas Cancer Center

Fairway, Kansas, United States

Site Status

Roswell Park Comprehensive Cancer Center

Buffalo, New York, United States

Site Status

University of Rochester James P Wilmot Cancer Institute

Rochester, New York, United States

Site Status

OHSU

Portland, Oregon, United States

Site Status

University of Washington - Seattle Cancer Center Alliance

Seattle, Washington, United States

Site Status

Centre Hospitalier Universitaire De Nantes

Nantes, , France

Site Status

Centre Hospitalier Universitaire de Poitiers

Poitiers, , France

Site Status

Josep Carreras Leukaemia Research Institute

Barcelona, , Spain

Site Status

Hospital Universitario Fundacion Jimenez Diaz (UAM-FJD)

Madrid, , Spain

Site Status

Countries

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United States France Spain

Related Links

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Other Identifiers

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U1111-1261-6031

Identifier Type: REGISTRY

Identifier Source: secondary_id

MK-4002-001

Identifier Type: OTHER

Identifier Source: secondary_id

2024-515582-33-00

Identifier Type: REGISTRY

Identifier Source: secondary_id

2019-004793-26

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

HPN217-3001

Identifier Type: -

Identifier Source: org_study_id

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