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  • Title: Identification and Clinical Implications of a Novel MYO15A Variant in a Consanguineous Iranian Family by Targeted Exome Sequencing.
    Author: Zarepour N, Koohiyan M, Taghipour-Sheshdeh A, Nemati-Zargaran F, Saki N, Mohammadi-Asl J, Tabatabaiefar MA, Hashemzadeh-Chaleshtori M.
    Journal: Audiol Neurootol; 2019; 24(1):25-31. PubMed ID: 30943474.
    Abstract:
    BACKGROUND AND OBJECTIVES: Hereditary hearing loss (HL) is known by a very high genetic heterogeneity, which makes a molecular diagnosis problematic. Next-generation sequencing (NGS) is a new strategy that can overcome this problem. METHOD: A comprehensive family history was obtained, and clinical evaluations and pedigree analysis were performed in the family with 3 affected members. After excluding mutations in the GJB2 and 7 other most common autosomal recessive nonsyndromic HL genes via Sanger sequencing and genetic linkage analysis in the family, we applied the Otogenetics deafness NGS panel in the proband of this family. RESULTS: NGS results showed a novel rare variant (c.7720C>T) in the MYO15A gene. This nonsense variant in the exon 40 of the MYO15A gene fulfills the criteria of being categorized as pathogenic according to the American College of Medical Genetics and Genomics guideline. CONCLUSIONS: New DNA sequencing technologies could lead to identification of the disease causing variants in highly heterogeneous disorders such as HL.
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