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Avalyn Completes Target Enrollment in Phase 2b MIST Trial of AP01 (Inhaled Pirfenidone) for Patients with Progressive Pulmonary Fibrosis

$AVLNPress releaseJun 17, 2026, 8:00 AM ETRead the release

Avalyn Pharma completed target enrollment of 375 patients in its Phase 2b MIST trial of inhaled pirfenidone AP01 for progressive pulmonary fibrosis, reaching this milestone ahead of schedule. The randomized, placebo-controlled trial is evaluating two dose levels with a primary endpoint of change in lung function (FVC) at 52 weeks, and topline data is anticipated in the second half of 2027.

Key figures

Drug Name
AP01
Guidance
Topline data expected in the second half of 2027
Phase Of Trial
Phase 2b
Doses evaluated
100 mg twice-daily, 50 mg twice-daily
Primary endpoint
change from baseline in FVC at 52 weeks
Target enrollment
375
Randomization ratio
2:1:2

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