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cemsidomide

Phase 2

Multiple Myeloma | Small molecule | Oncology |C4 Therapeutics, Inc.|Last Updated: Aug 12, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials2
Total Enrollment324

FDA Designations

No designations recorded

Clinical trial landscape

cemsidomide · 3 trials · 4 indications

Phase 2 1Phase 1 2
NCT07284758A Study to Evaluate the Efficacy of Cemsidomide + Dexamethasone in Participants With Relapsed/Refractory Multiple MyelomaMultiple Myeloma
RECRUITING100 Analytics
PHASE2RECRUITING
A Study to Evaluate the Efficacy of Cemsidomide + Dexamethasone in Participants With Relapsed/Refractory Multiple Myeloma
Multiple MyelomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall response rate (ORR) per International Myeloma Working Group (IMWG) Response Criteria by an Independent Review Committee (IRC)
up to approximately 43 months
Safety and tolerability of cemsidomide in combination with elranatamab
Cycle 1 approximately 28 days

Dose limiting toxicity rate

Phase 1: Safety and tolerability of cemsidomide
Baseline through 30 days after the last dose of study treatment

Percent of subjects with adverse events (AEs) with cemsidomide as a single agent

Phase 1: Safety and tolerability of cemsidomide in combination with dexamethasone
Baseline through 30 days after the last dose of study treatment

Percent of subjects with AEs with cemsidomide in combination with dexamethasone

Phase 1: Maximum tolerated dose (MTD) or recommended Phase 2 dose (RP2D) for cemsidomide
Days 1-28

Percent of subjects with dose-limiting toxicities (DLTs) with cemsidomide as a single agent

Phase 1: MTD or recommended RP2D for cemsidomide in combination with dexamethasone
Days 1-28

Percent of subjects with DLTs with cemsidomide in combination with dexamethasone

Phase 2: Antitumor activity of cemsidomide as a single agent
Baseline through 6 months after the last dose of study treatment, or until disease progression, whichever occurs first

Overall Response Rate (ORR) based on Best Overall Response (BOR), Duration of Response (DOR), and Progression Free Survival (PFS) of cemsidomide

Phase 2: Antitumor activity of cemsidomide in combination with dexamethasone
Baseline through 6 months after the last dose of study treatment, or until disease progression, whichever occurs first

ORR based on BOR, DOR, and PFS of cemsidomide in combination with dexamethasone in subjects with MM based on International Myeloma Working Group (IMWG) criteria

Secondary Endpoints

Duration of response (DoR; IRC assessed)
up to approximately 43 months
Complete response (CR) rate (IRC assessed)
up to approximately 43 months
Time to response (IRC assessed)
up to approximately 43 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cemsidomide + Dexamethasone:EXPERIMENTALParticipants receive cemsidomide plus dexamethasone during a 28-day treatment cycle, and will continue to receive treatment until the participant meets one of the discontinuation criteria.
Non-randomized cemsidomide (tablet) plus elranatamab (subcutaneous injection)EXPERIMENTAL -
Phase 1: Arm A - cemsidomideEXPERIMENTALParticipants with r/r NHL or r/r MM will be treated with oral cemsidomide as a single agent administered at different dosages and dosing schedules.
Phase 1: Arm B1 - cemsidomideEXPERIMENTALParticipants with r/r MM will be treated with escalating doses of oral cemsidomide as a single agent administered at different dosages and dosing schedules in each cohort, until the determination of maximum tolerated dose (MTD)/recommended Phase 2 dose (RP2D) or Sponsor discretion.
Phase 1: Arm B2 - cemsidomide in combination with dexamethasoneEXPERIMENTALParticipants with r/r MM will be treated with escalating doses of oral cemsidomide in combination with a fixed dose of oral dexamethasone in each cohort
Phase 1: Arm C - cemsidomideEXPERIMENTALParticipants with r/r NHL will be treated with escalating doses of oral cemsidomide single agent administered according to different dosing schedules in each cohort
Phase 2: Arm 1 - cemsidomideEXPERIMENTALParticipants with r/r MM will be treated with oral cemsidomide single agent
Phase 2: Arm 2 - cemsidomide in combination with dexamethasoneEXPERIMENTALParticipants with r/r MM treated with oral cemsidomide in combination with oral dexamethasone
Phase 2: Arm 3 - CFT7455EXPERIMENTALParticipants with r/r peripheral T-cell lymphoma (PTCL) treated with oral cemsidomide single agent

Interventions

NameTypeDescription
CemsidomideDRUGdosed orally (PO) once a day (QD) 14 days on/14 days off for each 28-day cycle
DexamethasoneDRUGdosed PO once a week (QW) on Days 1, 8, 15, and 22 for each 28-day cycle
ElranatamabBIOLOGICAL• BCMA-CD3 bispecific antibody
Dexamethasone OralDRUGoral dexamethasone \[ ≤75 years old: 40 mg once per week (QW) on days 1, 8, 15, and 22; \>75 Years old: 20 mg QW on days 1, 8, 15, and 22\]
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites21

Inclusion Criteria: 1. Be willing and able to provide signed informed consent for the study. 2. Age ≥ 18 years at the time of signed consent. 3. Subjects must have a documented diagnosis of MM and measurable disease at enrollment. 4. Received at least 3 prior anti-myeloma regimens (for a minimum of...

Countries:United StatesUnited Kingdom
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Competitive Landscape -Multiple Myeloma 221 trials

Top 20 of 25 competitors

CompanyTickerTrialsLead PhaseDrugs
AbbVie, Inc.ABBV16PHASE3Pomalidomide, Dexamethasone, Venetoclax
Bristol-Myers Squibb CompanyBMY18PHASE3Iberdomide, Lenalidomide
Takeda Pharmaceutical Co. Ltd. Sponsored ADRTAK5PHASE3IGI, 10%
GSK plc Sponsored ADRGSK17PHASE3Belantamab mafodotin, Pomalidomide, Dexamethasone, Bortezomib
Johnson & JohnsonJNJ28PHASE3Talquetamab, Pomalidomide, Teclistamab, Elotuzumab, Dexamethasone
Regeneron Pharmaceuticals, Inc.REGN11PHASE3Linvoseltamab, Carfilzomib, Daratumumab, Dexamethasone, Pomalidomide
Pfizer Inc.PFE11PHASE3Elranatamab, Lenalidomide
Sanofi SA Sponsored ADRSNY17PHASE3Isatuximab, Dexamethasone, Pomalidomide, Montelukast, Paracetamol/ Acetaminophen
AstraZeneca PLCAZN5PHASE3AZD0120, Daratumumab, Carfilzomib, Dexamethasone, Bortezomib
Gilead Sciences, Inc.GILD3PHASE3Anitocabtagene Autoleucel, Cyclophosphamide, Fludarabine, Pomalidomide, Bortezomib
Karyopharm Therapeutics, Inc.KPTI6PHASE3Selinexor, Elotuzumab, Pomalidomide, Dexamethasone
Grifols, S.A. Sponsored ADR Class BGRFS1PHASE3Xembify
BioLineRX Ltd. Sponsored ADRBLRX1PHASE3BL-8040/kg, G-CSF
C4 Therapeutics, Inc.CCCC3PHASE2Cemsidomide, Dexamethasone
Cellectar Biosciences, Inc.CLRB1PHASE2Iopofosine I 131 single dose, Iopofosine I 131 fractionated dose
GeoVax Labs, Inc.GOVX1PHASE2COVID-19 Vaccine, Synthetic MVA-based SARS-CoV-2 Vaccine GEO-CM04S1
Autolus Therapeutics Plc Sponsored ADRAUTL1PHASE2AUTO CAR T cell therapy
Incyte CorporationINCY2PHASE1Ruxolitinib, Lenalidomide, Methylprednisolone
Moderna, Inc.MRNA2PHASE1mRNA-2808
BeOne Medicines Ltd. Sponsored ADRONC1PHASE1Sonrotoclax, Dexamethasone, Carfilzomib, Daratumumab, Pomalidomide
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Recent Changes (Last 90 Days)

LOWAug 12, 2026NCT07280013lastUpdatePostDate: changed
LOWAug 12, 2026NCT07280013lastUpdatePostDate: changed
LOWAug 6, 2026NCT07284758lastUpdatePostDate: changed
LOWAug 6, 2026NCT07284758lastUpdatePostDate: changed
LOWJul 14, 2026NCT07280013lastUpdatePostDate: changed
LOWJul 14, 2026NCT07280013lastUpdatePostDate: changed
LOWJul 2, 2026NCT07284758lastUpdatePostDate: changed
LOWJul 2, 2026NCT07284758lastUpdatePostDate: changed
LOWJul 2, 2026NCT07284758lastUpdatePostDate: changed
LOWJul 2, 2026NCT07284758lastUpdatePostDate: changed

Frequently asked questions about cemsidomide

What is Cemsidomide used for?

Cemsidomide is an investigational small molecule being developed for the treatment of multiple myeloma, including relapsed/refractory multiple myeloma. It is also being studied in non-Hodgkin's lymphoma. The drug is currently in Phase 1 clinical trials and has not been approved by the FDA.

What does Cemsidomide target?

Cemsidomide targets cereblon, a protein that is part of the ubiquitin-proteasome pathway. By binding to cereblon, the drug modulates the degradation of specific proteins involved in cancer cell growth. This mechanism is shared with other -domide class drugs, which are used in multiple myeloma treatment.

Who is developing Cemsidomide?

Cemsidomide is being developed by C4 Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol CCCC. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with multiple myeloma and other hematologic malignancies.

What phase is Cemsidomide in?

Cemsidomide is currently in Phase 1 clinical development. It is being studied in two active Phase 1 trials for multiple myeloma and non-Hodgkin's lymphoma. The drug is investigational and has not received FDA approval for any indication.

What clinical trials is Cemsidomide in?

Cemsidomide is being evaluated in two active Phase 1 trials. NCT04756726 assesses safety and tolerability in relapsed/refractory non-Hodgkin's lymphoma or multiple myeloma. NCT07280013 studies the drug in combination with elranatamab in relapsed/refractory multiple myeloma. Both trials are enrolling patients in the United States.

Is Cemsidomide the same as CFT7455?

Yes, Cemsidomide is also known as CFT7455. The earlier clinical trial NCT04756726 uses the name CFT7455 to refer to the same drug. This alternative name may appear in older publications or trial registrations, but both names refer to the same investigational compound.