Quantifying Functional Impairment of ABCA3 Variants Associated with Interstitial Lung Disease.

ABSTRACT: ATP-binding cassette subfamily A member 3 (ABCA3) is a lipid transporter within alveolar type II cells. Patients with bi-allelic variants in ABCA3 may suffer from a variable severity of interstitial lung disease. We characterized and quantified ABCA3 variants' overall lipid transport function by assessing the in vitro impairment of its intracellular trafficking and pumping activity. We expressed the results relative to the wild type, integrated the quantitative readouts from eight different assays and used newly generated data combined with previous results to correlate the variants' function and clinical phenotype. We differentiated normal (within 1 normalized standard deviation (nSD) of the wild-type mean), impaired (within 1 to 3 nSD) and defective (beyond 3 nSD) variants. The tr

SUBMITTER: Yang X 

PROVIDER: S-EPMC10141231 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature