Journal
JOURNAL OF CYSTIC FIBROSIS
Volume 14, Issue 4, Pages 447-452Publisher
ELSEVIER
DOI: 10.1016/j.jcf.2014.12.012
Keywords
Cystic fibrosis; D1152H; Neonatal screening; Genotype/phenotype
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Funding
- Ministero della Salute (Rome, Italy) [L.548/93]
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Background: Discordant results were reported on the clinical expression of subjects bearing the D1152H CFTR mutation, and also for the small number of cases reported so far. Methods: A retrospective review of clinical, genetic and biochemical data was performed from individuals homozygous or compound heterozygous for the D115211 mutation followed in 12 Italian cystic fibrosis (CF) centers. Results: 89 subjects carrying at least D1152H on one allele were identified. 7 homozygous patients had very mild clinical expression. Over half of the 74 subjects compound heterozygous for D1152H and a I-II-III class mutation had borderline or pathological sweat test and respiratory or gastrointestinal symptoms; one third had pulmonary bacteria colonization and 10/74 cases had complications (i.e. diabetes, allergic bronchopulmonary aspergillosis, and hemoptysis). However, their clinical expression was less severe as compared to a group of CF patients homozygous for the F508del mutation. Finally, 8 subjects compound heterozygous for D1152H and a IV-V class mutation showed very mild disease. Conclusions: The natural history of subjects bearing the D1152H mutation is widely heterogeneous and is influenced by the mutation in trans. (C) 2014 European Cystic Fibrosis Society. Published by Elsevier B.V. All rights reserved.
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