Cemsidomide (CFT7455)

Study to Assess the Safety and Tolerability of CFT7455 in Relapsed/Refractory Non-Hodgkin's Lymphoma or Multiple Myeloma

What's the purpose of the trial?

The purpose of this study is to characterize the safety, tolerability, pharmacokinetics, pharmacodynamics, and antitumor activity of oral cemsidomide (also known as CFT7455) administered at different dosages in subjects with Relapsed/Refractory (r/r) Non-Hodgkin's Lymphoma (NHL) or Multiple Myeloma (MM). Cemsidomide may be administered as a single agent and, in MM only, in combination with oral dexamethasone.

Trial status

Accepting patients

Phase
Phase 1/2
Enrollment
224
Last Updated
3 days ago

Participating Centers

There are 18 centers participating in this trial. Enter a location below to find the closest center.

Experimental Treatments

Learn more about the experimental treatments being evaluated in this clinical trial.

  • Cemsidomide is an IKZF1/3 small molecule degrader that is being studied for use in several different indications.
  • Dexamethasone is a corticosteroid that prevents the release of substances in the body that cause inflammation, and is given in conjunction with some cancer treatments.

Published Results

Explore published results and other resources associated with this clinical trial (including press releases, news articles and videos).

Initial Results of a Phase 1 First-in-Human Study of Cemsidomide (CFT7455), a Novel MonoDACTM Degrader, with Dexamethasone in Patients with Relapsed/Refractory Multiple Myeloma

Results: As of July 3rd, 2024, 32 pts have been treated with cemsidomide at various doses plus DEX (20 or 40 mg weekly) in the ongoing dose escalation portion of the study. The median age was 64 (range 40-82) and pts had received a median of 6 prior lines of therapy (range 3-17). 21/32 (66%) of pts received prior treatment with a CAR-T or a bispecific antibody. 9/32 (28%) of pts had high-risk disease at screening and 6/32 (19%) of pts had extramedullary disease. Cemsidomide doses explored in dose-escalation and expansion cohorts included 50 µg MWF (n=6), 37.5 µg QD (n=12), 62.5 µg QD (n=10), and 75 µg QD (n=4), all on a 14 day on/14 day off dosing schedule. Systemic exposure of cemsidomide increased dose proportionally. At all dose levels, cemsidomide produced expected degradation of IKZF1 and IKZF3. To date only one dose-limiting toxicity has been observed (one pt in the 62.5 µg QD cohort experienced Grade 4 neutropenia lasting >7 days). 59% of pts experienced a grade ≥3 TEAE. Grade 3-4 TEAEs occurring in ≥10% of patients included neutropenia (34%), anemia (28%), infections (19%), lymphopenia (16%), and thrombocytopenia (13%). No pts experienced grade 3/4 fatigue, nausea, or vomiting. 5 pts have had treatment-related SAEs and 3 pts had an AE resulting in treatment discontinuation. As of the July 25th, 2024 efficacy cutoff, IMWG responses have been observed at all dose levels. The overall response rate among the 32 pts treated in dose escalation and expansion cohorts is 22% (1 sCR, 1 VGPR, and 5 PRs) with an additional 5 pts achieving minimal response (MR) for a clinical benefit rate of 38% (MR or better). To date, 2/4 (50%) pts in the 75 µg cohort have had a PR with expansion at 75 µg ongoing.

Conclusions: Initial results from this ongoing phase 1 trial of cemsidomide in combination with DEX demonstrate encouraging efficacy and tolerability as an all-oral therapy in a heavily pre-treated MM population, with the majority of pts having received a CAR-T or bispecific antibody. As anticipated in MM, grade 3-4 toxicities consist largely of myelosuppression, which has been manageable. Given a favorable emerging safety profile and promising anti-myeloma activity, cemsidomide is potentially well suited to combine with other modalities, including proteosome inhibitors, monoclonal antibodies, antibody drug-conjugates and bispecific antibodies. Dose escalation will continue until an MTD and/or the recommended phase 2 doses are identified. Updated data will be presented at the conference.

7 months ago Read more

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