Genetic Causes of Hearing Loss in a Large Cohort of Cochlear Implant Recipients.

Kristen L Seligman, A Eliot Shearer, Kathy Frees, Carla Nishimura, Diana Kolbe, Camille Dunn, Marlan R Hansen, Bruce J Gantz, Richard J H Smith

Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery 2022 Apr

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Understanding genetic causes of hearing loss can determine the pattern and course of a patient's hearing loss and may also predict outcomes after cochlear implantation. Our goal in this study was to evaluate genetic causes of hearing loss in a large cohort of adults and children with cochlear implants. We performed comprehensive genetic testing on all patients undergoing cochlear implantation. Of the 459 patients included in the study, 128 (28%) had positive genetic testing. In total, 44 genes were identified as causative. The top 5 genes implicated were GJB2 (20, 16%), TMPRSS3 (13, 10%), SLC26A4 (10, 8%), MYO7A (9, 7%), and MT-RNR1 (7, 5%). Pediatric patients had a higher diagnostic rate. This study lays the groundwork for future studies evaluating the relationship between genetic variation and cochlear implant performance.

Citation

Kristen L Seligman, A Eliot Shearer, Kathy Frees, Carla Nishimura, Diana Kolbe, Camille Dunn, Marlan R Hansen, Bruce J Gantz, Richard J H Smith. Genetic Causes of Hearing Loss in a Large Cohort of Cochlear Implant Recipients. Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery. 2022 Apr;166(4):734-737