Toggle Main Menu Toggle Search

Open Access padlockePrints

Characterization of CSF2RA mutation related juvenile pulmonary alveolar proteinosis

Lookup NU author(s): Professor John Sayer

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Background: Juvenile pulmonary alveolar proteinosis (PAP) due to CSF2RA mutations is a rare disorder with only a few cases described worldwide.Methods: We identified nine children with severe diffuse interstitial lung disease due to CSF2RA mutations. Clinical course, diagnostic findings and treatment were evaluated and correlated to the genotype. Functional impairment of the intracellular JAK/pStat5 signaling pathway was assessed using flow-cytometry of peripheral mononuclear cells (PBMC) and granulocytes.Results: We identified six individuals with homozygous missense/nonsense/frameshift mutations and three individuals homozygous for a deletion of the complete CSF2RA gene locus. Overall, four novel mutations (c.1125 + 1G > A, duplication exon 8, deletion exons 2-13, Xp22.3/Yp11.3) were found. Reduced STAT5 phosphorylation in PBMC and granulocytes was seen in all cases examined (n = 6). Pulmonary symptoms varied from respiratory distress to clinically silent. Early disease onset was associated with a more severe clinical phenotype (p = 0.0092). No association was seen between severity of phenotype at presentation and future clinical course or extent of genetic damage. The clinical course was favorable in all subjects undergoing whole lung lavage (WLL) treatment.Conclusions: Our cohort broadens the spectrum of knowledge about the clinical variability and genotype-phenotype correlations of juvenile PAP, and illustrates the favorable outcome of WLL treatment in severely affected patients.


Publication metadata

Author(s): Hildebrandt J, Yalcin E, Bresser HG, Cinel G, Gappa M, Haghighi A, Kiper N, Khalilzadeh S, Reiter K, Sayer J, Schwerk N, Sibbersen A, Van Daele S, Nubling G, Lohse P, Griese M

Publication type: Article

Publication status: Published

Journal: Orphanet Journal of Rare Diseases

Year: 2014

Volume: 9

Issue: 1

Online publication date: 26/11/2014

Acceptance date: 27/10/2014

ISSN (electronic): 1750-1172

Publisher: BioMed Central Ltd.

URL: http://dx.doi.org/10.1186/s13023-014-0171-z

DOI: 10.1186/s13023-014-0171-z


Altmetrics

Altmetrics provided by Altmetric


Actions

Find at Newcastle University icon    Link to this publication


Share