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Reporting Two Novel Mutations in Two Iranian Families with Cystic Fibrosis, Molecular and Bioinformatic Analysis
Amin Hosseini Nami1, Mahboubeh Kabiri2, Sirous Zeinali3
1College of Science, University of Tehran, Enghelab Avenue, Tehran, Iran- 1) Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.
Background:
Cystic fibrosis (CF) is the most common heredity disease among the Caucasian population. More than 350 known pathogenic variations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene (NM_000492.4) cause CF. Herein, we report the outcome of our investigation in two unrelated Iranian families with CF patients.
Methods:
We conducted phenotypic examination, segregation, linkage analysis, and CFTR gene sequencing to define causative mutations.
Results:
We found two novel mutations in the present study. The first one was a deletion causing frameshift, c.299delT p.(Leu100Profs*7), and the second one was a missense mutation, c.1857G>T, at nucleotide binding domain 1 of the CFTR protein. Haplotype segregation data supported our new mutation findings.
Conclusion:
Findings of this study expand the spectrum of CFTR pathogenic variations and can improve prenatal diagnosis and genetic counseling for CF.
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