Available in Argentina, United States, Mexico
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 270 participants, 90 participants on oral buloxibutid 100
mg BID, 90 participants on oral buloxibutid 50 mg BID, and 90 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
8Research sites
270Patients around the world