Recruiting

BLU-808 for Chronic Inducible and Spontaneous Urticaria

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What is being tested

BLU-808

+ Placebo

Drug
Who is being recruted

Chronic Urticaria+11

+ Chronic Inducible Urticaria

+ Cold Urticaria

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
Study Start: May 2025
See protocol details

Summary

Principal SponsorBlueprint Medicines Corporation
Study ContactBlueprint MedicinesMore contacts
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: May 28, 2025

Actual date on which the first participant was enrolled.

This clinical trial aims to explore the effectiveness and safety of a new medication called BLU-808 for people suffering from two types of chronic hives: Chronic Inducible Urticaria (CIndU) and Chronic Spontaneous Urticaria (CSU). Hives are itchy, raised welts on the skin, often triggered by allergens or other factors, and can be very uncomfortable. For those with chronic forms, hives can persist for six weeks or more, making treatment challenging. This study is important, as it could lead to a new treatment option that helps manage symptoms more effectively, improving the quality of life for those affected. Participants in this study will receive the medication BLU-808, which is taken orally. The study is divided into two parts, with each part focusing on one of the two types of chronic urticaria. Researchers will closely monitor participants to assess how well the medication works, its safety, and how the body processes it. By evaluating these aspects, the study seeks to ensure that BLU-808 is both effective and safe for long-term use in managing chronic hives.

Official TitleA Phase 2 Study to Evaluate the Safety, Tolerability, and Clinical Activity of BLU-808, a Wild Type KIT Inhibitor, in Chronic Inducible Urticaria and Chronic Spontaneous Urticaria
NCT06931405
Principal SponsorBlueprint Medicines Corporation
Study ContactBlueprint MedicinesMore contacts
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

105 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Chronic UrticariaChronic Inducible UrticariaCold UrticariaChronic DiseaseHypersensitivityHypersensitivity, ImmediateImmune System DiseasesPathologic ProcessesSkin DiseasesPathological Conditions, Signs and SymptomsUrticariaSkin and Connective Tissue DiseasesSkin Diseases, VascularDisease Attributes

Criteria

Key Inclusion Criteria: * Part A: Confirmed diagnosis of CIndU for ≥3 months prior to Day 1 that is inadequately controlled with second generation H1-antihistamines. * Part B: Confirmed diagnosis of CSU for ≥3 months prior to Day 1 that is inadequately controlled with second generation H1-antihistamines. Key Exclusion Criteria: * Part A: Any active urticaria that may interfere with study assessments. * Part B: Participant has a clearly defined predominant cause of chronic urticaria or sole trigger such as symptomatic dermographism and cold-induced urticaria. * Part A and Part B: Any other skin disease associated with chronic itching or angioedema that might influence the study evaluations and results, skin diseases associated with only wheals and no itch, or autoinflammatory diseases with urticarial lesions. * Part A and Part B: Significant medical, psychiatric, or surgical conditions, or physical findings that may affect participant safety, study drug metabolism, study participation, or assessment of study results. * Part A and Part B: Abnormal laboratory values that may pose risks or interfere with study participation. * Part A and Part B: Pregnancy or plans for pregnancy; breastfeeding.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

3 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
BLU-808 will be administered orally.

Group II

Experimental
BLU-808 will be administered orally.

Group III

Experimental
BLU-808 or matching placebo will be administered orally.

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 46 locations

Recruiting

Allervie Clinical Research

Birmingham, United StatesOpen Allervie Clinical Research in Google Maps
Recruiting

Acuro Research, Inc.

Little Rock, United States
Recruiting

Modena Allergy & Asthma Clinical Research - La Jolla

La Jolla, United States
Recruiting

Allergy & Asthma Associates of Southern California

Laguna Niguel, United States
Recruiting
46 Study Centers