(Summit) A Study to Evaluate the Efficacy and Safety of CGT9486 Versus Placebo in Patients With Indolent or Smoldering Systemic Mastocytosis

Running, not enrolling · Phase 2 · Has a placebo group

Conditions studied: SSM, Mastocytosis, Indolent, Mastocytosis, Systemic, Mastocytosis, ISM, BMM, Smoldering Systemic Mastocytosis, Bone Marrow Mastocytosis

In brief

This is a multi-part, randomized, double-blind, placebo-controlled Phase 2 clinical study comparing the safety and efficacy of bezuclastinib (CGT9486) plus best supportive care (BSC) with placebo plus BSC in patients with nonadvanced systemic mastocytosis (NonAdvSM), including indolent systemic mastocytosis and smoldering systemic mastocytosis, whose symptoms are not adequately controlled by BSC. This study will be conducted in three parts. Patients in Parts 1a, 1b and 2 will receive bezuclastinib or placebo, and may roll over onto Part 3 to receive treatment with bezuclastinib. Additionally, a substudy of subjects will investigate the efficacy, safety, and tolerability of bezuclastinib in patients who are experiencing inadequate symptom control with avapritinib.

Key facts

Study ID
NCT05186753
Run by
Cogent Biosciences, Inc.
People needed
237
Starts
2022-06-27
Expected to finish
2030-04-01
Last updated by the study team
2026-05-22

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

Where it is running

Full record on ClinicalTrials.gov

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