Abstract:
:A man with usual interstitial pneumonia (age of onset 58 years) was previously found to have an Ile73Thr (I73T) surfactant protein C (SFTPC) mutation. Genomic DNA from the individual and two daughters (aged 39 and 43 years) was sequenced for the I73T mutation and variations in ATP-binding cassette A3 (ABCA3). All three had the I73T SFTPC mutation. The father and one daughter (aged 39 years) also had a transversion encoding an Asp123Asn (D123N) substitution in ABCA3. The daughters were evaluated by pulmonary function testing and high-resolution CT (HRCT). Neither daughter had evidence of disease, except for focal subpleural septal thickening on HRCT scan in one daughter (aged 39 years). This daughter underwent bronchoscopy with transbronchial biopsies revealing interstitial fibrotic remodeling. These findings demonstrate that subclinical fibrotic changes may be present in family members of patients with SFTPC mutation-associated interstitial lung disease and suggest that ABCA3 variants could affect disease pathogenesis.
journal_name
Chestjournal_title
Chestauthors
Crossno PF,Polosukhin VV,Blackwell TS,Johnson JE,Markin C,Moore PE,Worrell JA,Stahlman MT,Phillips JA 3rd,Loyd JE,Cogan JD,Lawson WEdoi
10.1378/chest.09-0790subject
Has Abstractpub_date
2010-04-01 00:00:00pages
969-73issue
4eissn
0012-3692issn
1931-3543pii
S0012-3692(10)60203-6journal_volume
137pub_type
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