(PIONEER) Study to Evaluate Efficacy and Safety of Avapritinib (BLU-285), A Selective KIT Mutation-targeted Tyrosine Kinase Inhibitor, Versus Placebo in Patients With Indolent Systemic Mastocytosis

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

Conditions studied: Indolent Systemic Mastocytosis

In brief

This is a Phase 2, randomized, double-blind, placebo-controlled study comparing the efficacy and safety of avapritinib + best supportive care (BSC) with placebo + BSC in patients with indolent systemic mastocytosis (ISM) whose symptoms are not adequately controlled by BSC. The study will be conducted in 3 parts. All patients will receive treatment with avapritinib during Part 3 including those rolling over from the placebo group.

Key facts

Study ID
NCT03731260
Run by
Blueprint Medicines Corporation
People needed
251
Starts
2019-04-16
Expected to finish
2027-06-23
Last updated by the study team
2025-09-23

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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