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C4 Therapeutics to Present Data from the Phase 1 Trial of Cemsidomide in Multiple Myeloma at the International Myeloma Society (IMS) Annual Meeting

Key Takeaway: C4 Therapeutics announced that it will present data from its Phase 1 trial of cemsidomide for multiple myeloma at the IMS Annual Meeting on September 20, 2025. The presentation will include safety and efficacy data from all evaluable patients in the trial. C4T's investor webcast will follow the presentation to discuss further clinical development plans.

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POSITIVE FACTORS

  • Cemsidomide shows compelling response rates in multiple myeloma.
  • The Phase 1 trial demonstrates a well-tolerated safety profile.
  • C4 Therapeutics is advancing innovative targeted protein degradation science.

Full Press Release Details

WATERTOWN, Mass., Sept. 03, 2025 (GLOBE NEWSWIRE) -- C4 Therapeutics, Inc. (C4T) (Nasdaq: CCCC), a clinical-stage biopharmaceutical company dedicated to advancing targeted protein degradation science, today announced that data from its Phase 1 dose escalation clinical trial of cemsidomide in multiple myeloma (MM) will be shared in an oral presentation at the International Myeloma Society (IMS) Annual Meeting on September 20, 2025 at 11:10 am ET in Toronto, Canada.
IMS Annual Meeting 2025 Oral PresentationTitle: Updated Results of a Phase 1 First-in-Human Study of Cemsidomide (CFT7455), a Novel MonoDAC®Degrader, with Dexamethasone in Patients with Relapsed/Refractory Multiple MyelomaPresentation Date and Time: Saturday, September 20, 2025 at 11:10 am ETSession: Future Targets and New Modalities of TherapyLocation: Metro Toronto Convention Centre - South Building, Room 701Presenter: Binod Dhakal, M.D., M.S., associate professor of medicine, Medical College of Wisconsin, Division of Hematology
C4T has completed enrollment and dose escalation for its Phase 1 trial of cemsidomide in MM, which continues to demonstrate a well-tolerated safety profile and compelling response rates. The presentation at the IMS Annual Meeting will include data from all safety and efficacy evaluable MM patients from all dose levels studied in the cemsidomide with dexamethasone cohort in the Phase 1 trial. C4T’s investor webcast will highlight the data from the oral presentation at the IMS Annual Meeting and provide additional detail on the company’s planned next steps of clinical development.
C4T Investor WebcastC4T will host a webcast on September 20, 2025 at 3 pm ET. To join the webcast, please visit thislinkor the “Events & Presentations” page of the Investors section on the company’s website atwww.c4therapeutics.com. A replay of the webcast will be archived and available following the event. Additionally, following the oral presentation at the IMS Annual Meeting, C4T will share that presentation on its website under theScientific Presentations and Publications page.
About C4 TherapeuticsC4 Therapeutics (C4T) (Nasdaq: CCCC) is a clinical-stage biopharmaceutical company dedicated to delivering on the promise of targeted protein degradation science to create a new generation of medicines that transforms patients’ lives. C4T is progressing targeted oncology programs through clinical studies and leveraging its TORPEDO®platform to efficiently design and optimize small-molecule medicines to address difficult-to-treat diseases. C4T’s degrader medicines are designed to harness the body’s natural protein recycling system to rapidly degrade disease-causing proteins, offering the potential to overcome drug resistance, drug undruggable targets and improve patient outcomes. For more information, please visitwww.c4therapeutics.com.
About CemsidomideCemsidomide is an investigational, orally bioavailable small-molecule degrader designed to be a more potent and selective degrader of IKZF1/3, transcription factors that drive multiple myeloma (MM) and non-Hodgkin’s lymphomas (NHL), with unique pharmacokinetic properties. Clinical data has shown that cemsidomide is well-tolerated. In MM, cemsidomide displays compelling evidence of anti-myeloma activity and immunomodulatory effects. More information may be accessed at www.clinicaltrials.gov (identifier: NCT04756726).

Contacts:Investors:Courtney SolbergAssociate Director, Investor RelationsCSolberg@c4therapeutics.com

Media:Loraine SpreenSenior Director, Corporate Communications & Patient AdvocacyLSpreen@c4therapeutics.com

Frequently Asked Questions

What is cemsidomide?

Cemsidomide is an investigational small-molecule degrader targeting IKZF1/3, designed for treating multiple myeloma.

When will the IMS Annual Meeting presentation occur?

The presentation will take place on September 20, 2025, at 11:10 am ET.

What will be included in the presentation?

The presentation will cover safety and efficacy data from all evaluable patients in the trial.

How can I access the investor webcast?

The webcast can be accessed on C4T's website on September 20, 2025, at 3 pm ET.

Last updated: Sep 3, 2025