Defective SFTPA2 causes idiopathic pulmonary fibrosis (IPF)

Stable Identifier
R-HSA-5687868
Type
Pathway
Species
Homo sapiens
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One function of the pulmonary collectins, surfactant proteins A1, A2, A3 and D (SFTPAs, D), is that they influence surfactant homeostasis, contributing to the physical structures of lipids in the alveoli and to the regulation of surfactant function and metabolism. They are directly secreted from alveolar type II cells into the airway to function as part of the surfactant. The mechanism of secretion is unknown. Mutations in SFTPA2 disrupt protein structure and the defective protein is retained in the ER membrane causing idiopathic pulmonary fibrosis (IPF; MIM:178500). IPF is one of a family of idiopathic pneumonias sharing clinical features of shortness of breath, formation of scar tissue and varying degrees of inflammation and/or fibrosis on lung biopsy. IPF is typically progressive, leading to death from respiratory failure within 2-5 years of diagnosis in the majority of instances (Meltzer & Noble 2008, Noble & Barkauskas 2012).

Literature References
PubMed ID Title Journal Year
18366757 Idiopathic pulmonary fibrosis

Meltzer, EB, Noble, PW

Orphanet J Rare Dis 2008
22850886 Pulmonary fibrosis: patterns and perpetrators

Noble, PW, Barkauskas, CE, Jiang, D

J. Clin. Invest. 2012
Participants
Participant Of
Disease
Name Identifier Synonyms
idiopathic pulmonary fibrosis 0050156 IDIOPATHIC PULMONARY FIBROSIS, FAMILIAL, FIBROCYSTIC PULMONARY DYSPLASIA, cryptogenic fibrosing alveolitis
newborn respiratory distress syndrome 12716 Neonatal respiratory Distress syndrome, hyaline membrane disease, HMD - Hyaline membrane disease, pulmonary hypoperfusion syndrome of newborn, respiratory distress syndrome of newborn, pulmonary hyaline membrane disease
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