A Window of Opportunity Trial to Learn if Linvoseltamab is Safe and Well Tolerated, and How Well it Works in Adult Participants With Recently Diagnosed Multiple Myeloma Who Have Not Already Received Treatment

NCT ID: NCT05828511

Last Updated: 2025-12-03

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

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

132 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-12-19

Study Completion Date

2035-11-02

Brief Summary

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This study is researching an experimental drug called linvoseltamab (called "study drug"). The study is focused on participants with newly diagnosed multiple myeloma (NDMM) who are eligible for high dose chemotherapy with autologous stem cell transplantation (transplant-eligible) or ineligible for autologous stem cell transplantation (transplant-ineligible).

The aim of this clinical trial is to study the safety, tolerability (how the body reacts to the drug), and effectiveness (tumor shrinkage) of linvoseltamab in study participants with NDMM as a first step in determining if the study drug has a role in the treatment of NDMM.

This study consists of 2 phases:

* In Phase 1, the study drug will be given to participants to study the side effects of the study drug and to establish the regimen (initial doses and full dose) of the study drug to be given to participants in Phase 2.
* In Phase 2, the study drug will be given to more participants to continue to assess the side effects of the study drug and to evaluate the ability of the study drug to shrink the tumor (multiple myeloma) in participants with NDMM.

The study is looking at several research questions, including:

* What side effects may happen from taking linvoseltamab?
* What the right dosing regimen is for linvoseltamab?
* How many participants treated with linvoseltamab have improvement of their disease and for how long?
* The effects of linvoseltamab study treatment before and after transplant
* How much linvoseltamab is in the blood at different times?
* Whether the body makes antibodies against linvoseltamab (which could make the drug less effective or could lead to side effects).

Detailed Description

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Conditions

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Multiple Myeloma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Note: Phase 1 part B will be randomized 1:1. All other participants will be non-randomized.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Phase 1 cohort

Linvoseltamab dose escalation (part A) and dose expansion (part B) for participants with NDMM who are treatment-naïve.

Group Type EXPERIMENTAL

Linvoseltamab

Intervention Type DRUG

Linvoseltamab will be administered by intravenous (IV) infusion

Phase 2 - transplant ineligible cohort

Transplant-ineligible participants, enrolled in dose expansion, will receive selected Linvoseltamab regimen until disease progression as per protocol.

Group Type EXPERIMENTAL

Linvoseltamab

Intervention Type DRUG

Linvoseltamab will be administered by intravenous (IV) infusion

Phase 2 - transplant eligible cohort

Transplant-eligible participants, enrolled in dose expansion, will receive selected linvoseltamab regimen for a fixed duration of treatment as per protocol

Group Type EXPERIMENTAL

Linvoseltamab

Intervention Type DRUG

Linvoseltamab will be administered by intravenous (IV) infusion

Interventions

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Linvoseltamab

Linvoseltamab will be administered by intravenous (IV) infusion

Intervention Type DRUG

Other Intervention Names

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REGN5458 Lynozyfic™

Eligibility Criteria

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Inclusion Criteria

1. Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
2. Confirmed diagnosis of symptomatic multiple myeloma (MM) by International Myeloma Working Group (IMWG) diagnosis criteria
3. Measurable disease, according to the 2016 IMWG response criteria, as defined in the protocol
4. No prior therapy for MM, with the exception of prior emergent or palliative radiation and up to 1 month of single-agent corticosteroids, with washout periods as per the protocol
5. Participants must have evidence of adequate bone marrow reserves and hepatic, renal and cardiac function as defined in the protocol
6. Participants must be age \<70 and have adequate hepatic, renal, pulmonary and cardiac function to be considered transplant-eligible. The specific thresholds for adequate organ function are as per institutional guidance.

Exclusion Criteria

1. Receiving any concurrent investigational agent with known or suspected activity against MM, or agents targeting the A proliferation-inducing ligand (APRIL)/ Transmembrane activator and calcium modulator and cyclophilin ligand interactor (TACI)/BCMA axis
2. Known central nervous system (CNS) involvement with MM, known or suspected progressive multifocal leukoencephalopathy (PML), a history of neurocognitive conditions, or CNS movement disorder, or history of seizure within 12 months prior to study enrollment
3. Rapidly progressive symptomatic disease, (e.g. progressing renal failure or hypercalcemia not responsive to standard medical interventions), in urgent need of treatment with chemotherapy
4. Diagnosis of non-secretory MM, active plasma cell leukemia, primary light-chain (AL) amyloidosis, Waldenström macroglobulinemia (lymphoplasmacytic lymphoma), or known POEMS syndrome (plasma cell dyscrasia with polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

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University of California Los Angeles (UCLA)

Los Angeles, California, United States

Site Status RECRUITING

UC Irvine Health

Orange, California, United States

Site Status RECRUITING

Colorado Blood Cancer Institute/SCRI

Denver, Colorado, United States

Site Status RECRUITING

Norton Cancer Institute

Louisville, Kentucky, United States

Site Status RECRUITING

Karmanos Cancer Institute

Detroit, Michigan, United States

Site Status RECRUITING

Rutgers Cancer Institute of New Jersey

New Brunswick, New Jersey, United States

Site Status RECRUITING

Perlmutter Cancer Center at NYU Langone Hospital - Long Island

Mineola, New York, United States

Site Status RECRUITING

Perlmutter Cancer Center

New York, New York, United States

Site Status RECRUITING

Columbia University _ New York Presbyterian

New York, New York, United States

Site Status RECRUITING

Stony Brook University Hospital

Stony Brook, New York, United States

Site Status RECRUITING

Levine Cancer Institute

Charlotte, North Carolina, United States

Site Status RECRUITING

Duke University Health System (DUHS)

Durham, North Carolina, United States

Site Status RECRUITING

The University of Texas MD Anderson Cancer Center

Houston, Texas, United States

Site Status RECRUITING

Centre Hospitalier Universitaire (CHU) de Poitiers

Poitiers, Nouvelle-Aquitaine, France

Site Status RECRUITING

CHU De Lille

Lille, , France

Site Status NOT_YET_RECRUITING

Centre Hospitalier Universitaire (CHU) Montpellier

Montpellier, , France

Site Status RECRUITING

Hopital Saint Louis

Paris, , France

Site Status RECRUITING

Hopital Pitié Salpetriere APHP

Paris, , France

Site Status RECRUITING

Hopital Prive d'Antony

Antony, Île-de-France Region, France

Site Status RECRUITING

Hopital Necker

Paris, Île-de-France Region, France

Site Status RECRUITING

Gustave Roussy

Villejuif, Île-de-France Region, France

Site Status RECRUITING

Hospital Germans Trias i Pujol

Badalona, Barcelona, Spain

Site Status RECRUITING

Hospital Universitario Quiron Salud Madrid

Pozuelo de Alarcón, Madrid, Spain

Site Status RECRUITING

Clinica Universidad de Navarra

Pamplona, Navarre, Spain

Site Status RECRUITING

Hospital Universitario Central de Asturias

Oviedo, Principality of Asturias, Spain

Site Status RECRUITING

Hospital General Universitario Doctor Balmis Alicante

Alicante, Valencia, Spain

Site Status RECRUITING

Hospital Clinic de Barcelona

Barcelona, , Spain

Site Status RECRUITING

Institut Catala dOncologia (ICO Hospitalet)

Barcelona, , Spain

Site Status RECRUITING

Universitary Hospital La Princesa

Madrid, , Spain

Site Status RECRUITING

Clinica Universidad de Navarra - Madrid

Madrid, , Spain

Site Status RECRUITING

Hospital Universitario de Salamanca

Salamanca, , Spain

Site Status RECRUITING

La Fe University Hospital

Valencia, , Spain

Site Status RECRUITING

Countries

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United States France Spain

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

844-734-6643

Other Identifiers

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2022-500800-24-00

Identifier Type: REGISTRY

Identifier Source: secondary_id

R5458-ONC-2158

Identifier Type: -

Identifier Source: org_study_id

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