{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T05:37:33Z","timestamp":1769751453211,"version":"3.49.0"},"reference-count":43,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2023,1,1]],"date-time":"2023-01-01T00:00:00Z","timestamp":1672531200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,1,1]],"date-time":"2023-01-01T00:00:00Z","timestamp":1672531200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100008626","name":"Cochlear","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100008626","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J of Otolaryngol - Head &amp; Neck Surg"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      The spiral ganglion hypothesis suggests that pathogenic variants in genes preferentially expressed in the spiral ganglion nerves (SGN), may lead to poor cochlear implant (CI) performance. It was long thought that TMPRSS3 was particularly expressed in the SGNs. However, this is not in line with recent reviews evaluating CI performance in subjects with\n                      <jats:italic toggle=\"yes\">TMPRSS3-<\/jats:italic>\n                      associated sensorineural hearing loss (SNHL) reporting overall beneficial outcomes. These outcomes are, however, based on variable follow-up times of, in general, 1 year or less. Therefore, we aimed to 1. evaluate long-term outcomes after CI implantation of speech recognition in quiet in subjects with\n                      <jats:italic toggle=\"yes\">TMPRSS3-<\/jats:italic>\n                      associated SNHL, and 2. test the spiral ganglion hypothesis using the\n                      <jats:italic toggle=\"yes\">TMPRSS3-<\/jats:italic>\n                      group.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec sec-type=\"methods\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      This retrospective, multicentre study evaluated long-term CI performance in a Dutch population with\n                      <jats:italic toggle=\"yes\">TMPRSS3<\/jats:italic>\n                      -associated SNHL. The phoneme scores at 70 dB with CI in the\n                      <jats:italic toggle=\"yes\">TMPRSS3<\/jats:italic>\n                      -group were compared to a control group of fully genotyped cochlear implant users with post-lingual SNHL without genes affecting the SGN, or severe anatomical inner ear malformations. CI-recipients with a phoneme score\u2009\u2264\u200970% at least 1-year post-implantation were considered poor performers and were evaluated in more detail.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec sec-type=\"results\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The\n                      <jats:italic toggle=\"yes\">TMPRSS3 group<\/jats:italic>\n                      consisted of 29 subjects (N = 33 ears), and the control group of 62 subjects (N = 67 ears). For the\n                      <jats:italic toggle=\"yes\">TMPRSS3<\/jats:italic>\n                      -group, we found an average phoneme score of 89% after 5 years, which remained stable up to 10 years post-implantation. At both 5 and 10-year follow-up, no difference was found in speech recognition in quiet between both groups (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.830 and\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.987, respectively). Despite these overall adequate CI outcomes, six CI recipients had a phoneme score of\u2009\u2264\u200970% and were considered poor performers. The latter was observed in subjects with residual hearing post-implantation or older age at implantation.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>\n                      Subjects with\n                      <jats:italic toggle=\"yes\">TMPRSS3<\/jats:italic>\n                      -associated SNHL have adequate and stable long-term outcomes after cochlear implantation, equal to the performance of genotyped patient with affected genes not expressed in the SGN. These findings are not in line with the spiral ganglion hypothesis. However, more recent studies showed that TMPRSS3 is mainly expressed in the hair cells with only limited SGN expression. Therefore, we cannot confirm nor refute the spiral ganglion hypothesis.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s40463-023-00680-3","type":"journal-article","created":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T11:02:44Z","timestamp":1702638164000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Stable Long-Term Outcomes after Cochlear Implantation in Subjects with\n                    <i>TMPRSS3<\/i>\n                    Associated Hearing Loss: A Retrospective Multicentre Study"],"prefix":"10.1177","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6995-668X","authenticated-orcid":false,"given":"M. L. A.","family":"Fehrmann","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W. J.","family":"Huinck","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. E. G.","family":"Thijssen","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Haer-Wigman","sequence":"additional","affiliation":[{"name":"Department of Clinical Genetics, Radboudumc, Nijmegen, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H. G.","family":"Yntema","sequence":"additional","affiliation":[{"name":"Department of Clinical Genetics, Radboudumc, Nijmegen, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L. J. C.","family":"Rotteveel","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Leiden UMC, Leiden, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. C. C.","family":"Widdershoven","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Maastricht UMC, Maastricht, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Goderie","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology. Head and Neck Surgery, Ear and Hearing, Amsterdam UMC, Amsterdam, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. F.","family":"van Dooren","sequence":"additional","affiliation":[{"name":"Department of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. 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