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PLoS One. 2015 Apr 28;10(4):e0124757. doi: 10.1371/journal.pone.0124757. eCollection 2015.

Identification of Two Novel Compound Heterozygous PTPRQ Mutations Associated with Autosomal Recessive Hearing Loss in a Chinese Family.

Author information

1
Department of Otorhinolaryngology, Head and Neck Surgery, PLA General Hospital, Beijing, P. R. China; Department of Otolaryngology, Hainan Branch of PLA General Hospital, Sanya, P. R. China; Department of Otorhinolaryngology, the Second Artillery General Hospital, Beijing, P. R. China.
2
Department of Otorhinolaryngology, Head and Neck Surgery, PLA General Hospital, Beijing, P. R. China; Department of Otolaryngology, Hainan Branch of PLA General Hospital, Sanya, P. R. China.
3
BGI-Shenzhen, Shenzhen, 518083, China.
4
Department of Otorhinolaryngology, Head and Neck Surgery, PLA General Hospital, Beijing, P. R. China.
5
Department of Otorhinolaryngology, the Second Artillery General Hospital, Beijing, P. R. China.

Abstract

Mutations in PTPRQ are associated with deafness in humans due to defects of stereocilia in hair cells. Using whole exome sequencing, we identified responsible gene of family 1572 with autosomal recessively non-syndromic hearing loss (ARNSHL). We also used DNA from 74 familial patients with ARNSHL and 656 ethnically matched control chromosomes to perform extended variant analysis. We identified two novel compound heterozygous missense mutations, c. 3125 A>G p.D1042G (maternal allele) and c.5981 A>G p.E1994G (paternal allele), in the PTPRQ gene, as the cause of recessively inherited sensorineural hearing loss in family 1572. Both variants co-segregated with hearing loss phenotype in family 1572, but were absent in 74 familial patients. Heterozygosity for c. 3125 A>G was identified in two samples from unaffected Chinese individuals (656 chromosomes). Therefore, the hearing loss in this family was caused by two novel compound heterozygous mutations in PTPRQ.

PMID:
25919374
PMCID:
PMC4412678
DOI:
10.1371/journal.pone.0124757
[Indexed for MEDLINE]
Free PMC Article

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