Clinical Trials Logo

Clinical Trial Summary

This is a randomized, double-blind, placebo-controlled, Phase 2/3 study comparing the efficacy and safety of BLU-263 + best supportive care (BSC) with placebo + BSC in patients with indolent systemic mastocytosis (ISM) whose symptoms are not adequately controlled by BSC. Parts 1 and 2 will enroll patients with ISM. Patients enrolled in Part 1 or Part 2 will roll over onto Part 3 to receive treatment with BLU-263 in an open-label fashion following completion of the earlier Part. Part M will enroll patients with monoclonal mast cell activation syndrome (mMCAS). The study also includes PK groups that will enroll patients with ISM.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT04910685
Study type Interventional
Source Blueprint Medicines Corporation
Contact Blueprint Medicines
Phone 617-714-6707
Email medinfo@blueprintmedicines.com
Status Recruiting
Phase Phase 2/Phase 3
Start date November 30, 2021
Completion date June 30, 2028

See also
  Status Clinical Trial Phase
Completed NCT03632811 - Adaptation of the Questionnaire "Regarding Patient's Quality of Life With Mastocytosis" in the French Language
Completed NCT02808793 - A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AK002 Phase 1
Completed NCT02478957 - Treatment of Indolent Systemic Mastocytosis With PA101 Phase 2
Completed NCT03770273 - Safety and Efficacy of Subcutaneous Sarilumab in Improving the Quality of Life in People With Indolent Systemic Mastocytosis Phase 2
Recruiting NCT04333108 - Masitinib in Severe Indolent or Smoldering Systemic Mastocytosis Unresponsive to Optimal Symptomatic Treatment Phase 3
Not yet recruiting NCT06210698 - Angioedema Biomarker Research Study
Completed NCT00814073 - Masitinib in Severe Indolent or Smoldering Systemic Mastocytosis Phase 3
Active, not recruiting NCT01920204 - Midostaurin in Indolent Systemic Mastocytosis Phase 2
Active, not recruiting NCT03731260 - (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 Phase 2