NCT06588686

A Trial to Evaluate Efficacy and Safety of Buloxibutid in People With Idiopathic Pulmonary Fibrosis.

A Randomized, Double-blind, Placebo-controlled, Parallel-group, Multicenter Trial Evaluating the Efficacy and Safety of 2 Doses of Buloxibutid Over 52 Weeks in People With Idiopathic Pulmonary Fibrosis.

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 360 (estimated)
• Sponsor: Vicore Pharma AB · Industry
• Sex: All
• Age: 40 Years
• Healthy volunteers: Not accepted

Summary

The ASPIRE trial is a 52 week randomized, double-blind, placebo-controlled, parallel-group, multicenter trial in which the efficacy, safety, and pharmacokinetics of orally administered buloxibutid, either on top of stable IPF therapy or as monotherapy, are assessed in participants with IPF. Trial website: www.aspire-ipf.com

Detailed description

Buloxibutid is an oral angiotensin II type 2 (AT2) receptor agonist and has been shown to improve lung function in IPF over 36 weeks. Buloxibutid agonizes the AT2 receptor on alveolar epithelial type 2 cells (AEC2s), which are believed to play a central role in the disease. Buloxibutid has been demonstrated preclinically to improve AEC2 viability, alveolar integrity via surfactant secretion and epithelial repair via replenishment of gas exchange alveolar epithelial type 1 cells (AEC1s). This leads to decreasing downstream profibrotic signaling, enhancing resolution of existing fibrotic tissue via upregulation of collagenase matrix metalloproteinases, and addressing vascular disfunction associated with the disease. The trial will include participants who are on stable licensed IPF therapy or who are currently not treated with a licensed IPF therapy. The latter group will include participants intolerant or not responsive to licensed IPF therapies, participants ineligible to receive these therapies, and participants who have voluntarily declined to receive a licensed IPF therapy after being fully informed of the potential benefits and risks of such therapy. Due to the potential risk of drug-drug interactions (DDIs), concomitant treatment with pirfenidone is not allowed in this trial. Participants who are not on antifibrotic therapy at study start may initiate such treatment during the study. The trial is planned to enroll 360 participants, 120 participants on oral buloxibutid 100 mg BID, 120 participants on oral buloxibutid 50 mg BID, and 120 participants on oral placebo BID for 52 weeks. The treatment will be blinded and treatment allocation will be randomized. The primary measurement will be based on spirometry, measuring the forced vital capacity (FVC). The trial consists of 3 consecutive periods: a screening period of up to 6 weeks, a 52-week treatment period, and a follow-up period of 2-4 weeks after the 52-week visit. The study procedures have been planned with focus on optimizing patient convenience while allowing a safe conduct and strict scientific rigor. Trial website: www.aspire-ipf.com

Conditions

• Idiopathic Pulmonary Fibrosis (IPF)

Interventions

Type	Name	Description
DRUG	Buloxibutid	Buloxibutid
DRUG	Placebo	Placebo

Timeline

• Start date: 2024-12-09
• Primary completion: 2027-05-01
• Completion: 2027-06-01
• First posted: 2024-09-19
• Last updated: 2026-03-10

Locations

117 sites across 14 countries: United States, Argentina, Australia, Austria, Belgium, Canada, Germany, Greece, Italy, Mexico, Poland, South Korea, Taiwan, United Kingdom

Regulatory

• FDA-regulated drug study