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Taking people in United StatesPhase 2

Tests cemsidomide with dexamethasone for relapsed or refractory multiple myeloma

Tests cemsidomide with dexamethasone in adults with returning or resistant multiple myeloma.

Plain-language title generated from the registry record
Registry title: A Study to Evaluate the Efficacy of Cemsidomide + Dexamethasone in Participants With Relapsed/Refractory Multiple Myeloma

Key facts

Where
Ann Arbor, Atlanta, Boston, Chapel Hill, Detroit, Duarte, Grand Rapids, Huntsville, Indianapolis, Iowa City, Jacksonville, Madison, Milwaukee, Nashville, New York, Omaha, Phoenix, Rochester, San Antonio, Scottsdale, St Louis, and West Hollywood, United StatesSee the 25 sites
Phase
Phase 2

Where in United States

  • University of MichiganAnn Arbor, United StatesTaking people
  • Winship Cancer Institute, Emory UniversityAtlanta, United StatesTaking people
  • Beth Israel Deaconess Medical CenterBoston, United StatesNot yet recruiting
  • Dana-Farber Cancer InstituteBoston, United StatesNot yet recruiting
  • Massachusetts General HospitalBoston, United StatesTaking people
  • UNC Hospitals Adult Oncology ClinicsChapel Hill, United StatesTaking people
  • Karmanos Cancer InstituteDetroit, United StatesTaking people
  • City of HopeDuarte, United StatesTaking people
  • START | MidwestGrand Rapids, United StatesTaking people
  • Clearview Cancer InstituteHuntsville, United StatesTaking people
  • Indiana University HealthIndianapolis, United StatesTaking people
  • University of IowaIowa City, United StatesTaking people
  • Mayo Clinic FloridaJacksonville, United StatesTaking people
  • University of Wisconsin Carbone Cancer CenterMadison, United StatesTaking people
  • MCW-Clinical Cancer Center at Froedtert Hospital CampusMilwaukee, United StatesTaking people
  • Tennessee OncologyNashville, United StatesTaking people
  • Memorial Sloan-Kettering Cancer CenterNew York, United StatesTaking people
  • The Tisch Cancer Institute/Mount SinaiNew York, United StatesTaking people
  • University of Nebraska Medical CenterOmaha, United StatesTaking people
  • Mayo Clinic - ArizonaPhoenix, United StatesTaking people
  • Mayo Clinic MinnesotaRochester, United StatesTaking people
  • START | San AntonioSan Antonio, United StatesTaking people
  • HonorHealthScottsdale, United StatesTaking people
  • Washington University, Siteman Cancer CenterSt Louis, United StatesTaking people
  • Berenson Cancer CenterWest Hollywood, United StatesTaking people

Questions to ask the study team

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  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?
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Trial details

Who runs it
C4 Therapeutics, Inc.
Trial code
NCT07284758EU 2025-524181-26-00
Record updated
30 October 2026
Original description
This is a Phase 2, open-label, single-arm, multicenter study to assess the antimyeloma activity and further characterize the safety, tolerability, PK, and PD of cemsidomide in combination with dexamethasone in participants with relapsed/refractory multiple myeloma (r/r MM).Read full original descriptionShow less

A Phase 2, Open-Label, Single-Arm, Multicenter Study to Evaluate the Efficacy of Cemsidomide + Dexamethasone in Subjects With Relapsed/Refractory Multiple Myeloma

This is a Phase 2, open-label, single-arm, multicenter study to assess the antimyeloma activity and further characterize the safety, tolerability, PK, and PD of cemsidomide in combination with dexamethasone in participants with relapsed/refractory multiple myeloma (r/r MM).

Inclusion: Be willing and able to provide signed informed consent for the study; Age ≥ 18 years at the time of signed consent; Subjects must have a documented diagnosis of MM and measurable disease at enrollment; Received at least 3 prior anti-myeloma regimens (for a minimum of 2 or more consecutive cycles) that must have included an immunomodulatory drug (i.e., IKZF 1/3 degrader), a proteasome inhibitor, an anti-CD38 antibody, and a T-cell engager (TCE) or chimeric antigen receptor T-cell (CAR-T) therapy, unless not available per local standard of care; Subjects need to have adequate organ function; Toxicities from prior anticancer therapies must have resolved to baseline severity or CTCAE ≤ Grade 1; Female subjects may not be pregnant or intend to become pregnant, may not breastfeed or intend to breastfeed, or donate ova during their participation in this study until 30 days after the last dose of study treatment; Male subjects must agree to use a condom when having intercourse with a person of childbearing potential during the Treatment Period and for at least 30 days after the last dose of study treatment; Male subjects must refrain from donating sperm during the Treatment Period and for 30 days after discontinuation; Subjects must refrain from donating blood during study treatment and for 30 days after discontinuation.

Exclusion: Previously treated with cemsidomide; Thromboembolic event within 3 months prior to enrollment; Subjects with any of the following:; Systemic light chain amyloidosis; Polyneuropathy, Organomegaly, Endocrinopathy, Monoclonal gammopathy, and Skin changes (POEMS) Syndrome; Myelodysplastic syndrome (MDS); Clinically significant impaired cardiac function or cardiac disease; Known malignancy other than study indication that has progressed or required treatment within the past 3 years; Uncontrolled active bacterial, fungal, or viral infection; Presence of myeloma in the central nervous system (CNS); Inability or difficulty swallowing tablets; NOTE: Other inclusion/exclusion criteria may apply, per protocol.

ClinicalTrials.gov NCT07284758 · EU CTIS 2025-524181-26-00