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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

64 clinical trials for this condition and its sub-types.

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Broader categories

Disease (618) Autoimmune disease (283) Lung disorder (225) Immune system disorder (140) Respiratory system disorder (127) Lower respiratory tract disorder (16) Human disease (14) Pulmonary alveolar proteinosis (9) Disease by body system or component (0)

Trials to join now! 30 Not yet recruiting 7 Not yet finished but already full! 8 Completed 18 Terminated 1

Biopsy tolerance study ends early – what we know

Knowledge-focused Terminated

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