Tests SAR446523 in adults with relapsed or refractory multiple myeloma
Tests a new antibody, SAR446523, injected under the skin in adults with myeloma.
Plain-language title generated from the registry record
Registry title: A Study to Investigate the Safety and Efficacy of SAR446523 Injected Subcutaneously in Adult Participants With Relapsed/Refractory Myeloma
Key facts
- Where
- Hackensack, Jacksonville, Philadelphia, Phoenix, and Rochester, United StatesSee the 5 sites
- Phase
- Phase 1
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with multiple myeloma that has come back or stopped responding after at least 3 earlier treatments. It tests a new injected drug, SAR446523.
- Age
- 18 years or older
- Sex
- All sexes can join.
- Disease stage
- Multiple myeloma with measurable disease, relapsed or refractory, or intolerant to earlier treatments.
- Earlier treatment
- At least 3 earlier lines of antimyeloma treatment. In Part B, people must also be relapsed, refractory or intolerant to IMiD, PI, anti CD38 mAb and an anti BCMA agent. In Part B, earlier anti-GPRC5D therapy is not allowed.
Main reasons for not taking part
- ECOG performance status of 2 or greater
- AL amyloidosis, POEMS syndrome or active plasma cell leukemia
- Myeloma in the central nervous system or signs of meningeal involvement
- Antimyeloma treatment within 14 days before the first study treatment
- NK-cell engaging therapy within 90 days before the first study treatment
Read by machine on 9 November 2026.
Where in United States
- Hackensack Meridian Health - Hackensack University Medical Center- Site Number : 8400001Hackensack, United StatesTaking people
- Mayo Clinic in Florida- Site Number : 8400003Jacksonville, United StatesTaking people
- Thomas Jefferson University Hospital- Site Number : 8400002Philadelphia, United StatesTaking people
- Mayo Clinic in Arizona - Phoenix- Site Number : 8400005Phoenix, United StatesTaking people
- Mayo Clinic in Rochester - Minnesota- Site Number : 8400004Rochester, United StatesTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Sanofi
- Trial code
- NCT06630806
- Record updated
- 25 March 2026
- Original description
This is a first-in-human study of SAR446523 conducted in patients with RRMM.Read full original descriptionShow less
A First-in-human, Open-label, Phase 1 Study to Evaluate the Safety, Antitumor Activity, Pharmacokinetics, and Pharmacodynamics of Subcutaneous SAR446523, an Anti-GPRC5D ADCC-enhanced Monoclonal Antibody, in Participants With Relapsed/Refractory Multiple Myeloma
This is a first-in-human study of SAR446523 conducted in patients with RRMM.
The study consists of two parts:
Dose escalation (Part A): In this part, up to several dose levels (DLs) of SAR446523 will be explored to determine the maximum administered dose (MAD), maximum tolerated dose (MTD), and recommended dose range (RDR) of 2 dose regimens which will be tested in the dose optimization part.
Dose optimization (Part B): In this part, participants will be randomly assigned in a 1:1 ratio using interactive response technology (IRT) to either one of the chosen dose regimens of SAR446523 (determined from data coming from Part A), to determine the optimal dose as the recommended phase 2 dose (RP2D) of SAR446523.
Inclusion: Participants with a documented diagnosis of multiple myeloma (MM) with measurable disease; Contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies; Dose escalation (Part A); Participants must have received at least 3 prior lines of antimyeloma therapy, and must be either relapsed or refractory to the above therapies, or are intolerant to them; Note: In Part A, prior exposure to anti g-protein-coupled receptor, class c, group 5, member d (GPRC5D) therapy and anti B-cell maturation antigen (BCMA) therapy is allowed; Dose optimization (Part B); Participants must have received at least 3 prior lines of antimyeloma therapy and be either relapsed or refractory to immunomodulator (IMiD), proteasome inhibitor (PI), anti CD38 monoclonal antibody (mAb), and anti BCMA targeting agent or are intolerant to them; Note: In Part B, prior exposure to antiGPRC5D therapy is not allowed.
Exclusion: Systemic antimyeloma treatment within 14 days before the first study treatment administration; Prior treatment with natural killer (NK)-cell engaging therapy (such as monoclonal antibody with antibody-dependent cellular cytotoxicity as primary mechanism of action) within 90 days of the first study treatment administration; Participants with significant concomitant illness; The above information is not intended to contain all considerations relevant to the potential participation in a clinical trial; Primary systemic and localized amyloid light chain (AL) amyloidosis, active polyneuropathy, organomegaly, endocrinopathy, myeloma protein, and skin changes (POEMS) syndrome, active plasma cell leukemia. Participants with central nervous system involvement or with clinical signs of meningeal involvement of multiple myeloma; -Participants are excluded from the study if any of the following criteria apply: Eastern cooperative oncology group performance status (ECOG PS) of 2 or greater; Inadequate organ and marrow function.