Clinical trial Recruiting at 20 sites Phase1; Phase2 Interventional Ages 18 and up

Mezigdomide plus elranatamab for relapsed or refractory multiple myeloma

Official title: A Phase 1b/2a, Multicenter, Open-label Study to Determine the Recommended Dose and Schedule, and Evaluate the Safety and Preliminary Efficacy of Mezigdomide in Combination With Elranatamab in Participants With Relapsed and/or Refractory Multiple Myeloma

Run by Celgene · NCT06988488 · Data updated 2026-11-12

This test tries adding mezigdomide to elranatamab (with dexamethasone) to see if it is safe and can help adults with relapsed or refractory multiple myeloma who have had 1–4 prior treatments (eligibility differs by phase).

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment62 (estimated)
SponsorCelgene
Industry-sponsored
Drugs / interventionsCART, elranatamab
Locations22 sites (Birmingham, Alabama and 21 other locations)
StatusRecruiting
StartedOctober 7, 2025
Main results expectedMay 31, 2027
Study endsJune 3, 2027
Registry record updatedSeptember 2, 2026
Trial IDNCT06988488 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with measurable relapsed or refractory multiple myeloma, ECOG 0–1, who meet the trial's prior-treatment windows (phase 1: 2–4 prior lines; phase 2: 1–3 prior lines) and who have not previously received mezigdomide, T-cell engagers, or most BCMA-targeted therapies are the intended candidates.

Probably not a fit

Patients who previously received mezigdomide, prior T-cell engaging therapies, or recent BCMA-targeted treatments (with the limited exception of autologous BCMA CAR-T given >6 months earlier), or those with poor performance status or significant comorbidities, are unlikely to qualify or benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This open-label phase 1/2 study combines mezigdomide, a novel cereblon modulator, with elranatamab, a BCMA-directed T-cell engager, plus dexamethasone. Phase 1 uses dose-escalation to determine the recommended phase 2 dose and schedule, and phase 2 evaluates preliminary safety and efficacy. Eligible participants have measurable relapsed or refractory multiple myeloma and generally good performance status, with specific prior-treatment windows differing by phase. Key exclusions include prior mezigdomide, prior T-cell engaging therapies, and most prior BCMA-targeted treatments except autologous BCMA CAR-T given more than 6 months earlier.

Why it matters

Potential benefit: If successful, the combination could offer a new treatment option that produces deeper or longer responses for people with relapsed or refractory multiple myeloma.

How similar studies have gone: BCMA-targeting T-cell engagers such as elranatamab have shown single-agent activity in relapsed myeloma and IMiD/CELMoD agents have supporting rationale, but the specific combination with mezigdomide is relatively new with limited published data so far.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥18 with history of relapsed and refractory multiple myeloma (RRMM) treated with 2 to 4 prior lines of anti-myeloma therapy (Phase 1) or 1 to 3 prior lines of anti-myeloma therapy (Phase 2).
* Measurable MM by local laboratory.
* Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 to 1.
* Adherence to contraception requirements.

Exclusion Criteria:

* Prior treatment with mezigdomide.
* Prior treatment with T cell engaging or T cell engager (TCE).
* Prior treatment with B cell-maturation antigen (BCMA)-targeting therapy, with the exception of participants who have received autologous BCMA-targeted CART-cell therapy\> 6 months from the start of study therapy
* Other protocol-defined Inclusion/Exclusion criteria apply.

Where it's running

  • University of Alabama at Birmingham
    Birmingham, Alabama, United States
    Recruiting
  • Yale New Haven Hospital-Smilow Cancer Center
    New Haven, Connecticut, United States
    Recruiting
  • Hackensack University Medical Center
    Hackensack, New Jersey, United States
    Recruiting
  • University of Texas MD Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • Arthur J E Child Comprehensive Cancer Centre
    Calgary, Alberta, Canada
    Recruiting
  • QEII Health Sciences Centre - Victoria General Site
    Halifax, Nova Scotia, Canada
    Recruiting
Show 16 more locations
  • Princess Margaret Cancer Centre
    Toronto, Ontario, Canada
    Recruiting
  • Tongji University - Shanghai Fourth People's Hospital
    Shanghai, Shanghai Municipality, China
    Recruiting
  • Universitaetsklinikum Carl Gustav Carus Dresden
    Dresden, Germany
    Recruiting
  • Universitaetsklinikum Hamburg-Eppendorf
    Hamburg, Germany
    Recruiting
  • Universitaetsklinikum Heidelberg
    Heidelberg, Germany
    Recruiting
  • Evangelismos General Hospital of Athens
    Athens, Attikí, Greece
    Recruiting
  • Alexandra General Hospital of Athens
    Athens, Attikí, Greece
    Recruiting
  • St. Olavs Hospital
    Trondheim, Sør-Trøndelag, Norway
    Recruiting
  • Sykehusapoteket Ull
    Oslo, Norway
    Recruiting
  • Hospital Universitario Marqués de Valdecilla
    Santander, Cantabria, Spain
    Recruiting
  • Hospital Universitario de Salamanca - Complejo Asistencial Universitario de Salamanca
    Salamanca, Spain
    Recruiting
  • University College London Hospital
    London, England, United Kingdom
    Recruiting
  • Royal Marsden Hospital (Sutton)
    London, Sutton, United Kingdom
    Recruiting
  • The Christie NHS Foundation Trust
    Manchester, United Kingdom
    Recruiting
  • Local Institution - 0026
    Vancouver, British Columbia, Canada
    Not yet recruiting
  • Local Institution - 0030
    Suzhou, Jiangsu, China
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.