A pathogenic variant in SLC26A4 is associated with Pendred syndrome in a consanguineous Iranian family.
| Autor: | Pourahmadiyan, Azam, Alipour, Paria, Fattahi, Najmeh, Kasiri, Mahbubeh, Rezaeian, Fateme, Taghipour-Sheshdeh, Afsaneh, Mohammadi-Asl, Javad, Tabatabaiefar, Mohammad Amin, Hashemzadeh Chaleshtori, Morteza |
|---|---|
| Předmět: |
TEMPORAL bone radiography
THYROID gland radiography DNA analysis AUDIOMETRY BIOMARKERS BLOOD testing CARRIER proteins CHLORINE compounds CONSANGUINITY FAMILIES INTERVIEWING MOLECULAR biology GENETIC mutation QUESTIONNAIRES RESEARCH funding PHENOTYPES DESCRIPTIVE statistics SEQUENCE analysis PENDRED syndrome GENOTYPES |
| Zdroj: | International Journal of Audiology; Oct2019, Vol. 58 Issue 10, p628-634, 7p, 3 Diagrams, 2 Charts, 1 Graph |
| Abstrakt: | Objective: Hearing loss (HL) is a common sensory deficit with high phenotypic and genotypic heterogeneity. A large Iranian family with HL was genetically assessed in this study. Design: A proband from a consanguineous multiplex HL family from Iran was examined via Targeted Next-Generation Sequencing (TNGS). Sanger sequencing allowed the segregation analysis of the variant of interest and the investigation of its presence in a cohort of 50 ethnicity-matched healthy control individuals. The gene was previously associated with HL. Therefore, to determine whether the variant was specifically associated with Pendred Syndrome (PDS) or DFNB4, biochemical analyses, PTA, thyroid scans by Tc99m, perchlorate discharge test and high-resolution CT scan of the temporal bone were carried out on the affected family members. Study sample: Ten members of a large multiplex Iranian family with HL were recruited in this study. In addition, 50 unrelated healthy controls of the same ethnic group were randomly selected to genotype the variant. Results: A homozygous missense variant (NM_000441.1: c.1211C > T/p.Thr404Ile) in exon 10 was found segregating in the family. Based on the ACMG's guidelines, the variant was classified as pathogenic. Conclusion: This study expands the spectrum of SLC26A4 pathogenic variants in hearing loss. [ABSTRACT FROM AUTHOR] |
| Databáze: | Complementary Index |
| Externí odkaz: |
|