AzTrials
AzTrials

Plasma Cell Myeloma RefractoryPhase 1NCT06630806

A Study to Investigate the Safety and Efficacy of SAR446523 Injected Subcutaneously in Adult Participants With Relapsed/Refractory Myeloma

A Phase 1 study testing SAR446523 in people with Plasma Cell Myeloma Refractory, run by Sanofi at 19 sites in 7 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

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… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Plasma Cell Myeloma Refractory
What is being tested?
SAR446523
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
87 participants
Where
19 sitesin 7 countries
Study dates
30 Oct 2024to 16 May 2031
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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.

Who cannot join

  • -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.
  • 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.
  • 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.
  • Inadequate organ and marrow function.
  • Participants with significant concomitant illness.
  • The above information is not intended to contain all considerations relevant to the potential participation in a clinical trial.

Trial locations and contacts

19 sites in 7 countries. Contact the study team or a site near you to ask about taking part.

Trial Transparency email recommended (Toll free for US & Canada) contact

800-633-1610 ext. option 6

Contact-US@sanofi.com

19 sites in 7 countries

United States5 sites, 5 recruiting
  • Hackensack Meridian Health - Hackensack University Medical Center- Site Number : 8400001

    Hackensack, New Jersey, 07601

    Recruiting
  • Mayo Clinic in Florida- Site Number : 8400003

    Jacksonville, Florida, 32224

    Recruiting
  • Thomas Jefferson University Hospital- Site Number : 8400002

    Philadelphia, Pennsylvania, 19107

    Recruiting
  • Mayo Clinic in Arizona - Phoenix- Site Number : 8400005

    Phoenix, Arizona, 85054

    Recruiting
  • Mayo Clinic in Rochester - Minnesota- Site Number : 8400004

    Rochester, Minnesota, 55905

    Recruiting

Other trials in United States

Canada3 sites, 3 recruiting
  • Investigational Site Number : 1240001

    Montreal, Quebec, H4A 3J1

    Recruiting
  • Investigational Site Number : 1240002

    Sherbrooke, Quebec, J1H 5N4

    Recruiting
  • Investigational Site Number : 1240005

    Vancouver, British Columbia, V5Z 1L3

    Recruiting

Other trials in Canada

Israel3 sites, 3 recruiting
  • Investigational Site Number : 3760004

    Haifa, 3109601

    Recruiting
  • Investigational Site Number : 3760002

    Jerusalem, 9112001

    Recruiting
  • Investigational Site Number : 3760001

    Tel Aviv, Malopolskie, 6423906

    Recruiting

Other trials in Israel

Australia2 sites, 2 recruiting
  • Investigational Site Number : 0360002

    Melbourne, Victoria, 3065

    Recruiting
  • Investigational Site Number : 0360001

    Wollongong, New South Wales, 2500

    Recruiting

Other trials in Australia

France2 sites, 2 recruiting
  • Investigational Site Number : 2500002

    Lille, 59037

    Recruiting
  • Investigational Site Number : 2500001

    Nantes, 44093

    Recruiting

Other trials in France

Italy2 sites, 2 recruiting
  • Investigational Site Number : 3800001

    Rozzano, Milano, 20089

    Recruiting
  • Investigational Site Number : 3800002

    Torette, Ancona, 60020

    Recruiting

Other trials in Italy

Spain2 sites, 2 recruiting
  • Investigational Site Number : 7240002

    Barcelona, Barcelona [Barcelona], 08035

    Recruiting
  • Investigational Site Number : 7240001

    Madrid, 28040

    Recruiting

Other trials in Spain

About this study

Official title: 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:

Read more

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.

Read the detailed description

The study will be considered ongoing until the last participant last visit has occurred. Participants will be allowed to continue therapy until disease progression, unacceptable AEs, participant or Investigator's request to discontinue treatment.

Being tested
SAR446523
Keywords
anti-GPRC5D NK cell targeting therapy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • SAR446523Drug

    Pharmaceutical form: Powder for solution for injection; Route of administration: Subcutaneous (SC)

Study groups in NCT06630806
Study groupRoleWhat they receive
Part A (Dose escalation)ExperimentalParticipants will receive SAR446523
Receives: Drug: SAR446523
Part B Dose-1 (Dose optimization)ExperimentalParticipants will receive SAR446523 Dose-1
Receives: Drug: SAR446523
Part B Dose-2 (Dose optimization)ExperimentalParticipants will receive SAR446523 Dose-2
Receives: Drug: SAR446523

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of Dose Limiting Toxicities (DLTs)- Dose escalation (Part A)

    The incidence of DLTs will be evaluated using NCI CTCAE version 5.0 criteria.

    Measured: Cycle 1 (28 days)

  2. Overall response rate (ORR) - Dose optimization (Part B)

    ORR is defined as the proportion of participants with sCR, CR, VGPR, and PR assessed as per Investigator according to the 2016 IMWG response criteria.

    Measured: 24 months after the Last Participant In (LPI)

Secondary outcomes (15)
  1. Number of participants with treatment emergent adverse events (TEAEs), injection related reactions (IRRs), injection site reactions (ISRs), serious adverse events (SAEs), adverse event of special interests (AESIs)

    Measured as per NCI CTCAE v 5.0

    Measured: From the signing of informed consent to 30 days after the date of the last study treatment administration i.e., approximately 5 years

  2. Change from baseline in laboratory abnormalities

    Measured as per NCI CTCAE v 5.0.

    Measured: From the signing of informed consent to 30 days after the date of the last study treatment administration i.e., approximately 5 years

  3. ORR- Dose escalation (Part A)

    ORR defined as the proportion of participants with stringent complete response (sCR), complete response (CR), very good partial response (VGPR), and partial response (PR) assessed as per Investigator according to the 2016 International Myeloma Working Group (IMWG) response criteria.

    Measured: 24 months after the Last Participant In (LPI)

  4. VGPR or better rate

    VGPR or better rate defined as the proportion of participants with sCR, CR, and VGPR assessed as per Investigator according to the 2016 IMWG response criteria.

    Measured: 24 months after the Last Participant In (LPI)

  5. Clinical benefit rate (CBR)

    CBR defined as the rate of participants with confirmed sCR, CR, VGPR, or PR at any time or minimal response (MR) of at least 6 months from the first IMP administration determined per 2016 IMWG response criteria.

    Measured: 24 months after the Last Participant In (LPI)

  6. Duration of response (DoR)

    DoR defined as the time from the date of the first response (PR or better) to the date of first documentation of progressive disease (PD) as defined in the 2016 IMWG response criteria, or date of death, whichever occurs first.

    Measured: 24 months after the Last Participant In (LPI)

  7. Time to response (TTR)

    TTR defined as the time from the first administration of study IMP to the date of first response (PR or better) that is subsequently confirmed.

    Measured: 24 months after the Last Participant In (LPI)

  8. Progression free survival (PFS)

    PFS defined as the time interval from the date of first administration of study IMP to the date of first documentation of PD per 2016 IMWG criteria assessed by study Investigator, or date of death from any cause, whichever comes first.

    Measured: 24 months after the Last Participant In (LPI)

  9. Minimal residual disease (MRD) status negativity

    MRD status negative by nextgeneration sequencing (NGS) in bone marrow of participants with a response of CR (or VGPR in case of suspected interference).

    Measured: 24 months after the Last Participant In (LPI)

  10. Number of participants with symptomatic AEs -Part B

    The incidence and evaluation of symptomatic AEs from participants' perspective will be measured by using specific items from National Cancer Institute (NCI) patient-reported outcome (PRO) common terminology criteria for adverse events (CTCAE) library.

    Measured: From Cycle 1 Day 1 to 30 days after the date of the last study treatment administration i.e., approximately 5 years

  11. Change from baseline in overall side effect bother as measured by the Functional Assessment of Cancer Therapy item 5 (FACT-GP5)- Part B

    The FACT GP5 is an assessment focused on the overall side effect impact to inform the tolerability of a treatment. The FACT GP5 ("I am bothered by side effects of treatment") responses are given on a 5 point Likert type scale recalling the past 7 days. Higher scores indicate a higher degree of side effect bother.

    Measured: From Cycle 1 Day 1 to 30 days after the date of the last study treatment administration i.e., approximately 5 years

  12. Maximum observed concentration (Cmax)

    To characterize the pharmacokinetics (PK) of SAR446523.

    Measured: Multiple timepoints from Cycle 1 Day 1 to Cycle 1 Day 8 (cycle 1=28 days)

  13. First time to reach Cmax (tmax)

    To characterize the PK of SAR446523.

    Measured: Multiple timepoints from Cycle 1 Day 1 to Cycle 1 Day 8 (cycle 1=28 days)

  14. Area under the concentration versus time curve calculated from 0 to 168 hours (AUC0-168h)

    To characterize the PK of SAR446523.

    Measured: Multiple timepoints from Cycle 1 Day 1 to Cycle 1 Day 8 (cycle 1=28 days)

  15. Proportion of participants with presence of anti-drug antibody (ADA) against SAR446523.

    To evaluate potential immunogenicity.

    Measured: From Cycle 1 Day 1 to 30 days after the date of the last study treatment administration i.e., approximately 5 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Oct 2024
  2. Study start30 Oct 2024
  3. Primary completion16 May 2031 (estimated)
  4. Study completion16 May 2031 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Study is non-randomized for part A but randomized for part B. Study drug will be assigned in sequential manner in Part A but parallel assignment in Part B.
Masking
None (open label)
Enrolment
87 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06630806
Sponsor's protocol ID
TED18162
Other IDs
U1111-1301-4016, 2024-511667-28
Status last verified
Mar 2026
First submitted
3 Oct 2024
Last updated
25 Mar 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing SAR446523 in people with Plasma Cell Myeloma Refractory, run by Sanofi at 19 sites in 7 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 25 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 19 sites in United States, Canada, Israel, Australia, France and 2 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Trial Transparency email recommended (Toll free for US & Canada) (800-633-1610 ext. option 6, Contact-US@sanofi.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of Dose Limiting Toxicities (DLTs)- Dose escalation (Part A) (time frame: Cycle 1 (28 days)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Mar 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in