Novel deleterious mutation in MYO7A, TH and EVC2 in two Pakistani brothers with familial deafness

Novel mutation in familial deafness

  • Bibi Sabiha
  • Johar Ali
  • Yasar Mehmood Yousafzai
  • Syed Adnan Haider
Keywords: Deafness, EVC2, MYO7A, Next Generation Sequencing, TH.

Abstract

Objective: In Pakistan, 74% of consanguineous marriages are among the first cousins. Continuity of consanguineous marriages over generations increases the risk of recessive diseases such as deafness. The objective of this study was to investigate genetic origin of Pakistani deaf brothers with parents of consanguineous marriage.

Methods: DNA was extracted from the blood through Qiagen kit. Paired-end sequencing library was prepared according to protocol of Illumina’s TruSight Rapid Capture kit and TruSight Inherited Disease Panel. Library was normalized and used for Next Generation Sequencing through MiSeq. NGS data were analyzed using various bioinformatics tools.

Results: Both brothers were found to have novel deleterious mutation in MYO7A (c.2476G>A) while the younger brother had additional novel deleterious mutation in TH (c.43C>T) and EVC2 (c.2614C>T) genes.

Conclusion: It is concluded that in addition to novel mutations in MYO7A, TH and EVC2, the CDH23 and GJB2 can also be responsible for deafness in the family with consanguineous marriages.

How to cite this:
Sabiha B, Ali J, Yousafzai YM, Haider SA. Novel deleterious mutation in MYO7A, TH and EVC2 in two Pakistani brothers with familial deafness. Pak J Med Sci. 2019;35(1):17-22. doi: https://doi.org/10.12669/pjms.35.1.98

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published
2018-12-22
Section
Original Articles