(HARBOR) Study to Evaluate Efficacy and Safety of BLU-263 Versus Placebo in Patients With Indolent Systemic Mastocytosis

Study Number
Age Group

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.

Full Title

A Randomized, Double-Blind, Placebo-Controlled Phase 2/3 Study of BLU-263 in Indolent Systemic Mastocytosis

ClinicalTrials.Gov ID

To inquire about participating in these studies, call 1-800-ROSWELL (1-800-767-9355) or e-mail askroswell@roswellpark.org.