Autoimmune pulmonary alveolar proteinosis

MONDO:0012579

Pulmonary alveolar proteinosis (PAP) is a rare lung disease characterized by the accumulation of a lipoproteinaceous substance in the distal air spaces which positively stains with periodic acid-Schiff (PAS).

Also known as: APAP, Pulmonary Alveolar Proteinosis, autoimmune PAP, iPAP, idiopathic PAP, idiopathic pulmonary alveolar proteinosis, PAP, PAP acquired

41 clinical trials for this condition and its sub-types, 6 tagged with Autoimmune pulmonary alveolar proteinosis itself.

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Where it sits in the disease tree

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Part of

↑ Autoimmune disease (4049) ↑ Pulmonary alveolar proteinosis (13)

Including sub-types (41) Tagged with Autoimmune pulmonary alveolar proteinosis (6)

Trials to join now! 16 Not yet recruiting 9 Not yet finished but already full! 7 Completed 8 Terminated 1

Biopsy tolerance study ends early – what we know

Knowledge-focused Stopped early

This study aimed to understand how well patients tolerate biopsies for autoimmune diseases and whether they feel properly informed. It planned to enroll 505 people but was terminated early. The results may help improve patient experience with these common procedures.

Sponsor: University Hospital, Brest • Aim: Knowledge-focused

Last updated Jun 28, 2026 00:00 UTC

Autoimmune pulmonary alveolar proteinosis

Where it sits in the disease tree

Biopsy tolerance study ends early – what we know