RecruitingPhase 2Drug trialA Study Evaluating the Safety and Efficacy of Inhaled AP01 in Participants With Progressive Pulmonary FibrosisA randomized, double-blind, placebo-controlled clinical study to evaluate the safety and efficacy of 2 doses of inhaled pirfenidone (AP01) versus placebo on top of standard of care in participants with PPF over 52 weeks.