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Mutation Analysis of CFTR Gene in 70 Iranian Cystic Fibrosis Patients

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Author(s): Reza Alibakhshi | Mahdi Zamani

Journal: Iranian Journal Of Allergy, Asthma and Immunology
ISSN 1735-1502

Volume: 5;
Issue: 1;
Start page: 3;
Date: 2006;
Original page

Keywords: Cystic Fibrosis Transmembrane Conductance Regulator | Mutations | Cystic Fibrosis | Single-Stranded Conformational Polymorphism | Iran

ABSTRACT
Cystic fibrosis (CF) is the most common inherited disorder in Caucasian populations, with over 1400 cystic fibrosis transmembrane conductance regulator (CFTR) mutations. The type of mutations and their distributions varies widely between different countries and/or ethnic groups. Seventy Iranian cystic fibrosis patients were screened for the CFTR gene mutation using ARMS/PCR (amplification refractory mutation system) for the following mutations: ∆F508, N1303K, G542X, 1717-1G>A, R553X, W1282X, G551D, 621+1G>T, ∆I507 and R560T. Single strand conformation polymorphism (SSCP) analysis of exons 3, 7, 10, 11 and 17b, including both the exon/intron junctions, of the CFTR gene was performed in patients in whom no mutation could be identified on one or both CFTR genes. As a result of this screening, only three mutations were found: ∆F508 mutation was found in 25 (17.8%) alleles, N1303K in six (4.3%) alleles and G542X in five (3.6%) alleles. Thus, a total of 3 mutations cover 25.7% of CF alleles. These finding will be used for planning future screening and appropriate genetic counseling programs in Iranian CF patients.
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