Abstract

T (p.R708X) mutation in OTOF in 2p24-p22was identified as being the causal change. Linkage to 2p24-p22 locus was not observed in a particular branch of this extended family. Analysis of seven known deafness-causing genes in this branch revealed a mutation, c.254T>A (p.V85D), in CLDN14. Among seven small families unrelated to the 45-member extended family, hearing loss was attributable to p.R708X in OTOF in three families and to p.V85D in CLDN14 in one family; a new mutation c.1668T>A (p.Y556X) SLC26A4 was identified in two families and the causative change could not be identified in one family. Interpretation & conclusions: This study suggested considerable genetic heterogeneity in the causation of hearing loss in Dhadkai. Recessive mutations were observed in at least three genes causing hearing loss: OTOF (p.R708X), SLC26A4 (p.Y556X) and CLDN14 (p.V85D). Mutation p.R708X appeared to be the major cause of hearing impairment in Dhadkai.

Details

Title
Mutations in OTOF, CLDN14 & SLC26A4 genes as major causes of hearing impairment in Dhadkai village, Jammu & Kashmir, India
Author
Pandey, Nishtha 1 ; Rashid, Tabassum 2 ; Jalvi, Rajeev 3 ; Sharma, Meenakshi 4 ; Rangasayee, Raghunath 3 ; Andrabi, Khurshid 2 ; Anuranjan Anand 4 

 Molecular Biology & Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research; Centre for Human Genetics, Bengaluru 
 Department of Biotechnology, The University of Kashmir, Srinagar 
 Department of Audiology, Ali Yavar Jung National Institute for the Hearing Handicapped, Mumbai 
 Molecular Biology & Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 
Pages
489-497
Publication year
2017
Publication date
Oct 2017
Publisher
Scientific Scholar
ISSN
0971-5916
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2258210372
Copyright
© 2017. This work is published under https://creativecommons.org/licenses/by-nc-sa/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.