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  • Title: The patients associated with TMPRSS3 mutations are good candidates for electric acoustic stimulation.
    Author: Miyagawa M, Nishio SY, Sakurai Y, Hattori M, Tsukada K, Moteki H, Kojima H, Usami S.
    Journal: Ann Otol Rhinol Laryngol; 2015 May; 124 Suppl 1():193S-204S. PubMed ID: 25770132.
    Abstract:
    OBJECTIVES: To clarify the frequency of TMPRSS3 mutations in the hearing loss population, genetic analysis was performed, and detailed clinical characteristics were collected. Optical intervention for patients with TMPRSS3 mutations was also discussed. METHODS: Massively parallel DNA sequencing (MPS) was applied for the target exon-sequencing of 63 deafness genes in a population of 1120 Japanese hearing loss patients. RESULTS: Hearing loss in 5 patients was found to be caused by compound heterozygous TMPRSS3 mutations, and their detailed clinical features were collected and analyzed. Typically, all of the patients showed ski slope type audiograms and progressive hearing loss. Three of the 5 patients received electric acoustic stimulation (EAS), which showed good results. Further, the onset age was found to vary, and there were some correlations between genotype and phenotype (onset age). CONCLUSIONS: MPS is a powerful tool for the identification of rare causative deafness genes, such as TMPRSS3. The present clinical characteristics not only confirmed the findings from previous studies but also provided clinical evidence that EAS is beneficial for patients possessing TMPRSS3 mutations.
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