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    <IdentifierDoi>10.3205/zaud000056</IdentifierDoi>
    <IdentifierUrn>urn:nbn:de:0183-zaud0000566</IdentifierUrn>
    <ArticleType language="de">Kurzbeitrag</ArticleType>
    <ArticleType language="en">Short Report</ArticleType>
    <TitleGroup>
      <Title language="de">Etablierung eines weltweit zug&#228;nglichen Registers f&#252;r die auditorische Synaptopathie DFNB9 (OTOF)</Title>
      <TitleTranslated language="en">Establishment of a globally accessible registry for auditory synaptopathy DFNB9 (OTOF)</TitleTranslated>
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        <PersonNames>
          <Lastname>Vona</Lastname>
          <LastnameHeading>Vona</LastnameHeading>
          <Firstname>Barbara</Firstname>
          <Initials>B</Initials>
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        <Address language="de">
          <Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Auditorische Neurowissenschaften, G&#246;ttingen, Deutschland</Affiliation>
          <Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Humangenetik, G&#246;ttingen, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>University Medical Center G&#246;ttingen, Institute for Auditory Neuroscience, G&#246;ttingen, Germany</Affiliation>
          <Affiliation>University Medical Center G&#246;ttingen Institute of Human Genetics, G&#246;ttingen, Germany</Affiliation>
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        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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          <Lastname>Wollnik</Lastname>
          <LastnameHeading>Wollnik</LastnameHeading>
          <Firstname>Bernd</Firstname>
          <Initials>B</Initials>
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        <Address language="de">
          <Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Humangenetik, G&#246;ttingen, Deutschland</Affiliation>
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        <Address language="en">
          <Affiliation>University Medical Center G&#246;ttingen Institute of Human Genetics, G&#246;ttingen, Germany</Affiliation>
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        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Moser</Lastname>
          <LastnameHeading>Moser</LastnameHeading>
          <Firstname>Tobias</Firstname>
          <Initials>T</Initials>
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        <Address language="de">
          <Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Auditorische Neurowissenschaften, G&#246;ttingen, Deutschland</Affiliation>
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        <Address language="en">
          <Affiliation>University Medical Center G&#246;ttingen, Institute for Auditory Neuroscience, G&#246;ttingen, Germany</Affiliation>
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        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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        <PersonNames>
          <Lastname>Strenzke</Lastname>
          <LastnameHeading>Strenzke</LastnameHeading>
          <Firstname>Nicola</Firstname>
          <Initials>N</Initials>
          <AcademicTitle>Prof. Dr.</AcademicTitle>
        </PersonNames>
        <Address language="de">Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Auditorische Neurowissenschaften und Klinik f&#252;r HNO-Heilkunde, Robert-Koch-Str. 40, 37075 G&#246;ttingen, Deutschland<Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Institut f&#252;r Auditorische Neurowissenschaften, G&#246;ttingen, Deutschland</Affiliation><Affiliation>Universit&#228;tsmedizin G&#246;ttingen, Klinik f&#252;r HNO-Heilkunde, G&#246;ttingen, Deutschland</Affiliation></Address>
        <Address language="en">University Medical Center G&#246;ttingen, Dept. of Otolaryngology and Institute for Auditory Neuroscience, Robert-Koch-Str. 40, 37075 G&#246;ttingen, Germany<Affiliation>University Medical Center G&#246;ttingen, Institute for Auditory Neuroscience, G&#246;ttingen, Germany</Affiliation><Affiliation>University Medical Center G&#246;ttingen, Department of Otolaryngology, G&#246;ttingen, Germany</Affiliation></Address>
        <Email>Nicola.Strenzke&#64;med.uni-goettingen.de</Email>
        <Creatorrole corresponding="yes" presenting="no">author</Creatorrole>
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    <PublisherList>
      <Publisher>
        <Corporation>
          <Corporatename>German Medical Science GMS Publishing House</Corporatename>
        </Corporation>
        <Address>D&#252;sseldorf</Address>
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    <SubjectGroup>
      <SubjectheadingDDB>610</SubjectheadingDDB>
    </SubjectGroup>
    <DatePublishedList>
      
    <DatePublished>20241127</DatePublished></DatePublishedList>
    <Language>germ</Language>
    <LanguageTranslation>engl</LanguageTranslation>
    <License license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
      <AltText language="en">This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License.</AltText>
      <AltText language="de">Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung).</AltText>
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    <SourceGroup>
      <Journal>
        <ISSN>2628-9083</ISSN>
        <Volume>6</Volume>
        <JournalTitle>GMS Zeitschrift f&#252;r Audiologie - Audiological Acoustics</JournalTitle>
        <JournalTitleAbbr>GMS Z Audiol (Audiol Acoust)</JournalTitleAbbr>
      </Journal>
    </SourceGroup>
    <ArticleNo>21</ArticleNo>
    <Fundings>
      <Funding>Deutsche Forschungsgemeinschaft</Funding>
      <Funding fundId="EXC 2067/1-390729940">(DFG)</Funding>
      <Funding>Deutsche Forschungsgemeinschaft</Funding>
      <Funding fundId="STR 1027/5-1 406266759">(DFG)</Funding>
      <Funding>Deutsche Forschungsgemeinschaft</Funding>
      <Funding fundId="VO 2138/7-1 469177153">(DFG)</Funding>
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    <Abstract language="de" linked="yes"><Pgraph>Die autosomal rezessiv vererbte auditorische Synaptopathie DFNB9 wird durch Mutationen im <Mark2>OTOF</Mark2>-Gen ausgel&#246;st und &#228;u&#223;ert sich in den meisten F&#228;llen durch eine angeborene Taubheit mit fehlender BERA aber erhaltenen otoakustischen Emissionen. In selteneren F&#228;llen ist ein Restgeh&#246;r vorhanden, wenn auch mit deutlicher Einschr&#228;nkung des Sprachverstehens, teilweise mit pathologischer H&#246;rerm&#252;dung und&#47;oder Abh&#228;ngigkeit des H&#246;rens von der K&#246;rpertemperatur. Urs&#228;chlich ist eine St&#246;rung der Freisetzung und&#47;oder des Wiederauff&#252;llens der glutamatgef&#252;llten Vesikel an der Synapse der inneren Haarzelle bei Fehlen des haarzellspezifischen Proteins Otoferlin. Mehrere tierexperimentelle Studien und erste Studien am Menschen zeigen die prinzipielle Machbarkeit einer Wiederherstellung des H&#246;rens durch eine virusvermittelte Gentherapie.</Pgraph><Pgraph>Um die klinische Forschung voranzutreiben haben wir eine Datenbank in der Software &#8222;RedCap&#8220; etabliert, in die Betroffene, deren Angeh&#246;rige und &#196;rzt&#42;innen in pseudonymisierter Form in deutscher oder englischer Sprache Informationen zum Ph&#228;notyp, Genotyp und Vererbungsmuster eintragen k&#246;nnen. Der Studienleitung ist es &#8211; entsprechendes elektronisch dokumentiertes Einverst&#228;ndnis vorausgesetzt &#8211; eine Kontaktaufnahme zu einzelnen Individuen m&#246;glich.</Pgraph><Pgraph>Das bei ClinicalTrials.org registrierte Register erm&#246;glicht einen besseren &#220;berblick &#252;ber die H&#228;ufigkeit und Auspr&#228;gungen von DFNB9, &#252;ber G<TextGroup><PlainText>eno</PlainText></TextGroup>typ-Ph&#228;notyp-Korrelationen und &#252;ber den Erfolg verschiedener Behandlungsstrategien, sowie eine bessere Einbeziehung Betroffener in die Forschung.</Pgraph></Abstract>
    <Abstract language="en" linked="yes"><Pgraph>The autosomal recessive inherited auditory synaptopathy DFNB9 is caused by mutations in the <Mark2>OTOF</Mark2> gene and manifests itself in most cases as congenital deafness with absent ABR but preserved otoacoustic emissions. In rarer cases, residual hearing is present, albeit with significant impairment of speech comprehension, sometimes with pathological hearing fatigue and&#47;or dependence of hearing on body temperature. The cause is a disturbance in the release and&#47;or replenishment of the glutamate-filled vesicles at the synapse of the inner hair cell in the absence of the hair cell-specific protein otoferlin. Several animal studies and initial studies in humans show the feasibility in principle of restoring hearing through virus-mediated gene therapy.</Pgraph><Pgraph>In order to advance clinical research, we have established a &#8220;RedCap&#8221; database in which patients, their relatives and doctors can enter information on phenotype, genotype and inheritance patterns in pseudonymized format. The study scientists can also contact the participants &#8211; provided they have given their consent in electronic format.</Pgraph><Pgraph>The study is listed in ClinicalTrials.org and will enable a better overview of the incidence and clinical patterns of DFNB9, including genotype&#8211;phenotype correlations, the success of different treatments, as well as patient involvement in research.</Pgraph></Abstract>
    <TextBlock language="de" linked="yes" name="Die auditorische Synaptopathie DFNB9">
      <MainHeadline>Die auditorische Synaptopathie DFNB9</MainHeadline><Pgraph>Die erste beschriebene und h&#228;ufigste Form der genetisch bedingten auditorischen Synaptopathie DFNB9 wird durch Mutationen im <Mark2>OTOF</Mark2>-Gen versursacht, welches f&#252;r das Otoferlin-Protein kodiert <TextLink reference="1"></TextLink>. Seit der Erstbeschreibung wurden fast 300 krankheitsverursachende <Mark2>OTOF</Mark2>-Varianten identifiziert. Die Pr&#228;valenz schwankt in verschiedenen Populationen, DFNB9 kann bis zu ca. 5&#37; der F&#228;lle von angeborener Taubheit verursachen <TextLink reference="2"></TextLink>. Bei den objektiven audiometrischen Untersuchungen ist die auditorische Synaptopathie durch erhaltene otoakustische Emissionen bei gleichzeitigem Fehlen von BERA-Antworten und Stapediusreflexen gekennzeichnet. Dadurch kann bei Nutzung der OAE-Messungen im Neugeborenen-H&#246;rscreening f&#228;lschlicherweise zu unauff&#228;lligen Befunden kommen. Die meisten DFNB9-Patient&#42;innen sind klinisch vollst&#228;ndig taub. Bei den wenigen Patient&#42;innen mit signifikant erhaltenem Restgeh&#246;r ist das Sprachverstehen aufgrund einer pathologischen H&#246;rerm&#252;dung eingeschr&#228;nkt, so dass eine H&#246;rger&#228;teversorgung wenig erfolgreich ist. Hingegen kann das urs&#228;chliche Funktionsdefizit mit gutem Erfolg durch ein Cochlea-Implantat umgangen werden (&#220;bersicht in <TextLink reference="3"></TextLink>).</Pgraph><Pgraph>Otoferlin spielt eine entscheidende Rolle bei der synaptischen Signal&#252;bertragung zwischen den inneren Haarsin<TextGroup><PlainText>n</PlainText></TextGroup>eszel<TextGroup><PlainText>l</PlainText></TextGroup>en auf die Neurone des N. cochlearis. Diskutiert werden Funktionen als Kalziumsensor f&#252;r die Fusion <TextLink reference="4"></TextLink>, <TextLink reference="5"></TextLink>, <TextLink reference="6"></TextLink>, beim Auff&#252;llen des Vesikelpools <TextLink reference="7"></TextLink>, <TextLink reference="8"></TextLink>, <TextLink reference="9"></TextLink> und in der Exozytose-Endozytose-Kopplung <TextLink reference="10"></TextLink>, <TextLink reference="11"></TextLink>, <TextLink reference="12"></TextLink>. Aufgrund des klar definierten Defekts und der relativ geringen Cochlea-Degeneration <TextLink reference="13"></TextLink> wurde <Mark2>OTOF</Mark2> fr&#252;h als vielversprechendes Ziel f&#252;r die Entwicklung von Gentherapien identifiziert (&#220;bersicht in <TextLink reference="14"></TextLink>). Sehr schnell nach den vielversprechenden pr&#228;klinischen Studien zur virusvermittelten Gentherapie an <Mark2>Otof</Mark2>-Knockout-M&#228;usen <TextLink reference="15"></TextLink>, <TextLink reference="16"></TextLink>, <TextLink reference="17"></TextLink> wurden k&#252;rzlich f&#252;nf klinische Studien (NCT05901480, ChiCTR2200063181, NCT05821959, NCT05788536, SENS-501) begonnen. Die ersten publizierten Ergebnisse sind sehr vielversprechend <TextLink reference="18"></TextLink>, <TextLink reference="19"></TextLink>, aber L&#228;ngsschnittdaten &#252;ber die anhaltende Wirksamkeit und Sicherheit fehlen noch (&#220;bersicht in <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>).</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Auditory synaptopathy DFNB9">
      <MainHeadline>Auditory synaptopathy DFNB9</MainHeadline><Pgraph>The first described and most prevalent form of inherited auditory synaptopathy DFNB9 arises from mutations in the <Mark2>OTOF</Mark2> gene which encodes the otoferlin protein <TextLink reference="1"></TextLink>. Since its initial description, nearly 300 disease-causing variants in <Mark2>OTOF</Mark2> have been identified. The prevalence of DFNB9 varies between population and reaches up to 5&#37; of cases of congenital deafness <TextLink reference="2"></TextLink>. DFNB9 is an auditory synaptopathy, characterized by the presence of otoacoustic emissions despite absent ABRs and stapedial reflexes. In this constellation, deafness may remain undetected by newborn hearing screening when OAE are used as a diagnostic tool. The majority of DFNB9 patients are profoundly deaf. In the few patients with significant residual hearing, speech comprehension is limited by auditory fatigue, and benefit from hearing aids is limited. In contrast, the causal functional deficit can be successfully bypassed when using a cochlear implant for hearing rehabilitation (reviewed in <TextLink reference="3"></TextLink>).</Pgraph><Pgraph>Otoferlin, a multi-C2-domain protein, plays a crucial role in the synaptic transmission between sensory inner hair cells and spiral ganglion neurons. Its functions include calcium sensing for fusion <TextLink reference="4"></TextLink>, <TextLink reference="5"></TextLink>, <TextLink reference="6"></TextLink>, vesicle replenishment <TextLink reference="7"></TextLink>, <TextLink reference="8"></TextLink>, <TextLink reference="9"></TextLink> and exocytosis-endocytosis coupling <TextLink reference="10"></TextLink>, <TextLink reference="11"></TextLink>, <TextLink reference="12"></TextLink>. Due to the clearly defined defect and <TextGroup><PlainText>the relative</PlainText></TextGroup>ly mild degenerative changes <TextLink reference="13"></TextLink>, <Mark2>OTOF</Mark2> h<TextGroup><PlainText>as emerg</PlainText></TextGroup>ed as a promising target for gene therapy de<TextGroup><PlainText>velopme</PlainText></TextGroup>nt (review in <TextLink reference="14"></TextLink>). Soon after successful pre-clinical studies demonstrating the feasibility of virus-me<TextGroup><PlainText>diate</PlainText></TextGroup>d gene therapy in <Mark2>Otof</Mark2> knockout mouse models <TextLink reference="15"></TextLink>, <TextLink reference="16"></TextLink>, <TextLink reference="17"></TextLink>, five clinical studies (NCT05901480, <TextGroup><PlainText>ChiCTR2200063181</PlainText></TextGroup>, NCT05821959, NCT05788536, SENS-501) were initiated. The published preliminary results are promising <TextLink reference="18"></TextLink>, <TextLink reference="19"></TextLink>, but data regarding the long-term efficacy and safety are still missing (reviewed in <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>). </Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Das OTOF-Register">
      <MainHeadline>Das OTOF-Register</MainHeadline><Pgraph>Begleitend zu unserem umfangreichen grundlagenwissenschaftlichen Forschungsprogramm zu den Kran<TextGroup><PlainText>k</PlainText></TextGroup>heitsme<TextGroup><PlainText>c</PlainText></TextGroup>ha<TextGroup><PlainText>n</PlainText></TextGroup>i<TextGroup><PlainText>s</PlainText></TextGroup>men von DFNB9 haben wir nun ein Otoferlin-Register aufgebaut, welches die translationale Forschung erleichtern soll. Wir ben&#246;tigen einen umfassenderen Einblick in die Vielfalt der <Mark2>OTOF</Mark2>-Varianten und ihre entsprechenden klinischen Verl&#228;ufe (Genotyp-Ph&#228;notyp-Korrelation), umfassende Datens&#228;tze zum nat&#252;rlichen Krankheitsverlauf und systematische Datenerhebungen zu den Erfolgen verschiedener Be<TextGroup><PlainText>h</PlainText></TextGroup>an<TextGroup><PlainText>d</PlainText></TextGroup>lung<TextGroup><PlainText>s</PlainText></TextGroup>m&#246;<TextGroup><PlainText>g</PlainText></TextGroup>lichkei<TextGroup><PlainText>t</PlainText></TextGroup>en. Weiterhin ist gezielte Forschung zu den F&#228;llen von Temperatur-sensitivem H&#246;rverlust und zur genaueren Charakterisierung der pathologischen H&#246;rerm&#252;dung bei DFNB9 notwendig. Die M&#246;glichkeit der Kontaktaufnahme zu den Probanden ist wichtig f&#252;r die Untersuchung von Langzeitverl&#228;ufen und die Rekrutierung von Probanden f&#252;r neue Studien. Es entsteht aber auch die M&#246;glichkeit, die Betroffenen direkt &#252;ber neue Erkenntnisse zu informieren, in die Planung neuer Studien einzubeziehen, und untereinander zu vernetzen. </Pgraph><Pgraph>Das Register wird auf einer lokal installierten REDCap-Datenbank betrieben, die von der Arbeitsgruppe f&#252;r Biometrie, Datenmanagement und Informatik in klinischen Studien an der Universit&#228;tsmedizin G&#246;ttingen gehostet wird. Um die Datensicherheit zu gew&#228;hrleisten, besteht die Struktur aus zwei Datenbanken, in denen die patientenidentifizierbaren Informationen (blau in Abbildung 1 <ImgLink imgNo="1" imgType="figure"/>) von den klinischen und genetischen Daten (gr&#252;n in Abbildung 1 <ImgLink imgNo="1" imgType="figure"/>) getrennt sind. Das Einwilligungsverfahren <TextGroup><PlainText>beginnt mit dem Z</PlainText></TextGroup>ugriff auf die Otoferlin-Registerseite &#252;ber die Website des Instituts f&#252;r Auditorische Ne<TextGroup><PlainText>u</PlainText></TextGroup>rowis<TextGroup><PlainText>s</PlainText></TextGroup>enscha<TextGroup><PlainText>ften (</PlainText></TextGroup><Hyperlink href="https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry.html">https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry.html</Hyperlink>). Diese Seite enth&#228;lt Studieninformationen und Einverst&#228;ndniserkl&#228;rungen f&#252;r Erwachsene, Eltern, Jugendliche und Kinder. Nach Abschluss des vollst&#228;ndig digitalen Einwilligungsverfahrens und Angabe der pers&#246;nlichen Daten erhalten die Teilnehmer &#252;ber eine verschl&#252;sselte E-Mail einen teilnehmerspezifischen Link und Zugangscode f&#252;r den pers&#246;nlichen Zugang zum Registerfragebogen. Diese Struktur garantiert die strikte Trennung von pers&#246;nlichen und medizinischen Informationen. In strukturierter Weise werden Fragen zum Genbefund, Krankheitsverlauf und zur Fa<TextGroup><PlainText>mili</PlainText></TextGroup>eng<TextGroup><PlainText>eschic</PlainText></TextGroup>hte sowie zur H&#246;rrehabilitation gestellt. Au<TextGroup><PlainText>di</PlainText></TextGroup>om<TextGroup><PlainText>etrisc</PlainText></TextGroup>he Befunde k&#246;nnen in verschiedenen Formaten, u.a. als PDF oder JPG hochgeladen werden, dabei m&#252;ssen pers&#246;nliche Informationen zuvor unkenntlich gemacht werden. Alle Daten werden von der Studienleitung auf Vollst&#228;ndigkeit und Einhaltung der Datenschutzrichtlinien &#252;berpr&#252;ft. Die Teilnehmer haben &#252;ber ihren pers&#246;nlichen Link jederzeit die M&#246;glichkeit, die von ihnen &#252;bermittelten Daten zu &#252;berpr&#252;fen und zu &#228;ndern und werden ermuntert, die Ergebnisse von Verlaufskontrollen hochzuladen. Sie erhalten auch Kopien aller &#252;bermittelten Einverst&#228;ndniserkl&#228;rungen und Registerdaten f&#252;r ihre Unterlagen. Vor einer Ver&#246;ffentlichung erfolgt eine zweite Pseudonymisierung. </Pgraph><Pgraph>Soweit wir wissen, ist dieses Gen-spezifische Register das erste f&#252;r eine isolierte Form der H&#246;rbehinderung. Durch die zweisprachige Umsetzung werden speziell deutschsprachige, aber auch internationale Teilnehmer angesprochen. </Pgraph><Pgraph>Aktuell planen wir ein Update, welches es erm&#246;glicht, die klinischen Ergebnisse von Patienten zu verfolgen, die sich einer Gentherapie f&#252;r Otoferlin unterzogen haben. Damit soll in Erg&#228;nzung zu den Studienprotokollen eine unabh&#228;ngige Auswertung erm&#246;glicht werden, die die standardisierte Auswertung in den Studienprotokollen erg&#228;nzt, vergleicht und weiterverfolgt, auch nach Zulassung der entsprechenden Medikamente. Dar&#252;ber hinaus wollen wir das Engagement der Gemeinschaft f&#246;rdern, indem wir Teilnehmer ansprechen, die sich bereit erkl&#228;rt haben, erneut kontaktiert zu werden. Wir stellen uns vor, dass das Register als Plattform f&#252;r die F&#246;rderung von patientenorientierter Forschung, Interessenvertretung und Zusammenarbeit dient. Alle bisher registrierten Teilnehmer haben sich explizit auch f&#252;r die M&#246;glichkeit f&#252;r eine erneute Kontaktaufnahme und die Verteilung von Aufkl&#228;rungs- oder Informationsmaterial entschieden. Wir planen die Organisation eines Otoferlin-Symposiums f&#252;r die Teilnehmer und ihre Familien, um die Otoferlin-Fo<TextGroup><PlainText>r</PlainText></TextGroup>schung gemeinsam zu diskutieren. Dabei m&#246;chten wir die Erfahrungen der Patienten und ihrer Familien nutzen, die unserer Meinung nach die wahren Experten f&#252;r Otoferlin-assoziierte Synaptopathie und die Hauptak<TextGroup><PlainText>t</PlainText></TextGroup>eure bei der Entwicklung von zuk&#252;nftigen Otoferlin-The<TextGroup><PlainText>r</PlainText></TextGroup>a<TextGroup><PlainText>p</PlainText></TextGroup>ien sind. </Pgraph><Pgraph>Schlie&#223;lich unterstreichen wir mit dem Register die Bedeutung von Gentests in der Routinediagnostik der Schwerh&#246;rigkeit. Die gesicherte genetische Diagnose durch die Identifizierung von pathogenen <Mark2>OTOF</Mark2>-Varianten ist das einzige Kriterium f&#252;r die Teilnahme am Register, aber auch f&#252;r die Teilnahme an klinischen Studien, insbesondere f&#252;r kausal wirkende Th<TextGroup><PlainText>e</PlainText></TextGroup>ra<TextGroup><PlainText>p</PlainText></TextGroup>iea<TextGroup><PlainText>n</PlainText></TextGroup>s&#228;tze.</Pgraph><Pgraph>Zusammenfassend l&#228;sst sich sagen, dass das Register ein leistungsf&#228;higes Instrument zur Verbesserung unseres Verst&#228;ndnisses der Varianten und klinischen Merkmale ist, die mit <Mark2>OTOF</Mark2>-assoziierter H&#246;rbehinderung in Verbindung stehen. Es wird die Korrelation zwischen Genotyp und Ph&#228;notyp erleichtern und eine Echtzeitbewertung der therapeutischen Modalit&#228;ten erm&#246;glichen. Dar&#252;ber hinaus wird das Register als Plattform f&#252;r die Einbindung der <Mark2>OTOF</Mark2>-Patientengemeinschaft dienen, die Zusammenarbeit bei der Patientenvertretung f&#246;rdern und unsere eigenen klinischen <Mark2>OTOF</Mark2>-Studien erleichtern. Das Studiendesign kann als Vorlage f&#252;r &#228;hnliche Projekte genutzt werden. </Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="The OTOF registry">
      <MainHeadline>The OTOF registry</MainHeadline><Pgraph>Inspired by our continued basic science research on Otoferlin and the translational potential, we have now developed an otoferlin registry to promote translational studies. We need a broader knowledge on genotype-phenotype correlations, on the natural history of the disease, and on the success of different treatment modalities. We need to be able to re-contact to ask for follow-up data and to recruit them to studies, e.g. to specifically characterize temperature sensitive hearing loss associated with DFNB9 and auditory fatigue. We would like to be able to directly contact patients, and to inform them about new discoveries, to involve them in the planning of new studies, and to establish connections with and among them. </Pgraph><Pgraph>The registry operates on a locally installed REDCap database hosted by the working group for Biometry, Data Management and Informatics in Clinical Studies at the University Medical Center G&#246;ttingen. To ensure data security, the structure comprises two databases, separatin<TextGroup><PlainText>g pa</PlainText></TextGroup>tient-identifiable information (blue in Figure 1 <ImgLink imgNo="1" imgType="figure"/>) fr<TextGroup><PlainText>om clinical</PlainText></TextGroup> and genetics data (green in Figure 1 <ImgLink imgNo="1" imgType="figure"/>). The consent procedure begins by accessing the Otoferlin Registry section through the Institute for Auditory Neurosc<TextGroup><PlainText>ie</PlainText></TextGroup>nce website (<Hyperlink href="https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry&#95;en.html">https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry&#95;en.html</Hyperlink>). This page contains study information and consent forms for adults, parents, adolescents, and children. Following completion of the fully digital consent procedure and provision of personal information, participants receive a participant-specific link and access code via an encrypted email for personal access to the registry questionnaire. This structure guarantees the strict separation of personal and medical information. The structured questionnaire comprises questions regarding the genetic test results, disease course, family history, and hearing rehabilitation.  Genetic and audiometric tests should be uploaded as a variety of possible file types such as PDF or JPG after removal of personal identifiers. All data is checked for completeness and adherence to data protection rules by the study coordinator. Participants are able to review and amend their submitted data and submit updates or additional audiometry over time using the same personal link. They also receive copies of all transmitted consent forms and registry data for their records. A second pseudonymization is applied prior to publication of data.</Pgraph><Pgraph>To our knowledge, this gene-specific registry represents the first for an isolated form of hearing impairment. The bilingual implementation attracts German- and English-speaking participants. </Pgraph><Pgraph>We currently plan an update to track the results of gene therapy. This will enable an independent evaluation that supplements, compares and follows up upon the standardised evaluation in the study protocols and after the corresponding treatments have been approved. Additionally, we aim to foster community engagement by reaching out to participants who have indicated their willingness to be recontacted. We envision the registry serving as a platform for advancing patient-centred research, advocacy and collaborative efforts. All participants who registered so far have explicitly signed up for the option to be recontacted and to receive educational or informational materials. One exciting prospect on our agenda is the organization of an otoferlin symposium for participants and their families. This event will provide an opportunity to discuss otoferlin research collaboratively, leveraging the expertise of patients and their families, who we believe are the true experts of otoferlin-associated synaptopathy and the primary stakeholders in the development of future approved otoferlin therapies. </Pgraph><Pgraph>Finally, we underscore the importance of genetic testing in the routine diagnostic work-up of patients with hearing impairment for which a hereditary cause may be possible. A genetic diagnosis, established through the identification of variants in <Mark2>OTOF</Mark2>, serves as the sole eligibility criterion for participation in the registry, but is also crucial for the participation in clinical trials, especially regarding causative treatment approaches. </Pgraph><Pgraph>In conclusion, we foresee the registry as a powerful tool for enhancing our understanding of the variants and clinical characteristics associated with <Mark2>OTOF</Mark2>-associated hearing impairment. It will facilitate genotype-phenotype correlations and enable real-time assessment of therapeutic modalities. Moreover, the registry will serve as a platform for engaging the <Mark2>OTOF</Mark2> patient community, fostering collaboration for patient advocacy and facilitating our own <Mark2>OTOF</Mark2> clinical trials. The study design can also serve as a template for similar projects. </Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Weitere Informationen und Ressourcen">
      <MainHeadline>Weitere Informationen und Ressourcen</MainHeadline><Pgraph>Wenn Sie mehr &#252;ber das Otoferlin-Register erfahren oder sich f&#252;r die Teilnahme an der Studie anmelden m&#246;chten, besuchen Sie bitte <Hyperlink href="https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry.html">https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry.html</Hyperlink>. Diese Studie wurde von der Ethikkommission der Universit&#228;tsmedizin G&#246;ttingen genehmigt (Genehmigung: 17&#47;8&#47;22) und ist auf ClinicalTrials.gov unter der ID NCT05946057 registriert.</Pgraph><Pgraph>F&#252;r klinische Fragen zur Diagnostik und Therapie v<TextGroup><PlainText>on DFNB</PlainText></TextGroup>9 steht Prof. Dr. Nicola Strenzke (<TextGroup><PlainText>nicola.strenzke&#64;med.u</PlainText></TextGroup>ni-goettingen) zur Verf&#252;gung, <TextGroup><PlainText>f&#252;r allgemeine</PlainText></TextGroup> Fragen zur Gendiagnostik Prof. Dr. <TextGroup><PlainText>Bernd W</PlainText></TextGroup>ollnik (bernd.wollnik&#64;med.uni-goettingen.de).</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Further information and resources">
      <MainHeadline>Further information and resources</MainHeadline><Pgraph>To learn more about the otoferlin registry or for pati<TextGroup><PlainText>ent e</PlainText></TextGroup>nrolment, please visit <Hyperlink href="https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry&#95;en.html">https:&#47;&#47;www.auditory-neuroscience.uni-goettingen.de&#47;otoferlin&#95;registry&#95;en.html</Hyperlink>. This study was approved by the Ethics Committee of the University Medical Center G&#246;ttingen (Approval: 17&#47;8&#47;22) and is registered on ClinicalTrials.gov under ID NCT05946057.</Pgraph><Pgraph>Prof. Dr. Nicola Strenzke (nicola.strenzke&#64;med.uni-go<TextGroup><PlainText>etting</PlainText></TextGroup>en) is available for clinical questions on the diagnosis and treatment of DFNB9, and Prof. Dr. Bernd Wollnik (bernd.wollnik&#64;med.uni-goettingen.de) for gener<TextGroup><PlainText>al q</PlainText></TextGroup>uestions on genetic diagnostics.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Anmerkungen">
      <MainHeadline>Anmerkungen</MainHeadline><SubHeadline>Konferenzpr&#228;sentation</SubHeadline><Pgraph>Dieser Kurzbeitrag wurde bei der 26. Jahrestagung der Deutschen Gesellschaft f&#252;r Audiologie pr&#228;sentiert und als Abstract ver&#246;ffentlicht <TextLink reference="22"></TextLink>.</Pgraph><SubHeadline>Danksagung</SubHeadline><Pgraph>Wir danken den Mitgliedern des Instituts f&#252;r Humangenetik Leipzig f&#252;r produktive Diskussionen in den fr&#252;hen Planungsphasen. Wir danken Thomas Asendorf und den Mitgliedern der klinischen Studieneinheit und der Ethikkommission der Universit&#228;tsmedizin G&#246;ttingen f&#252;r die konstruktive Zusammenarbeit. </Pgraph><SubHeadline>Finanzierung</SubHeadline><Pgraph>Diese Arbeit wurde von der Deutschen Forschungsgemeinschaft (DFG) im Rahmen der Exzellenzstrategie EX<TextGroup><PlainText>C 20</PlainText></TextGroup>67&#47;1-390729940 (an T.M. und B.W.), dem DFG Heisenberg-Programm STR 1027&#47;5-1 406266759 (an N.S.) und der DFG VO 2138&#47;7-1 469177153 (an B.V.) gef&#246;rdert.</Pgraph><SubHeadline>Interessenkonflikt</SubHeadline><Pgraph>Die Autorinnen und Autoren erkl&#228;ren, dass sie keine Interessenkonflikte im Zusammenhang mit diesem Artikel haben.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Notes">
      <MainHeadline>Notes</MainHeadline><SubHeadline>Conference presentation</SubHeadline><Pgraph>This contribution was presented at the 26<Superscript>th</Superscript> Annual Conference of the German Society of Audiology and published as an abstract <TextLink reference="22"></TextLink>.</Pgraph><SubHeadline>Acknowledgements</SubHeadline><Pgraph>We thank members of the Institute of Human Genetics Leipzig for productive discussions in the early planning stages of our registry. We thank Thomas Asendorf and members of the clinical trials unit and ethics commission at the University Medical Center G&#246;ttingen for the constructive collaboration. </Pgraph><SubHeadline>Funding</SubHeadline><Pgraph>This work was supported by the Deutsche Fo<TextGroup><PlainText>r</PlainText></TextGroup>schungsg<TextGroup><PlainText>emeinsch</PlainText></TextGroup>aft (DFG, German Research Foundation) under Germany&#8217;s Excellence Strategy EXC 2067&#47;1-390729940 (to T.M. and B.W.), the DFG Heisenberg program STR 1027&#47;5-1 grant 406266759 (to N.S.) and the DFG VO 2138&#47;7-1 grant 469177153 (to B.V.).</Pgraph><SubHeadline>Competing interests</SubHeadline><Pgraph>The authors declare that they have no competing interests.</Pgraph></TextBlock>
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          <Caption language="de"><Pgraph><Mark1>Abbildung 1: Workflow in der </Mark1><Mark1><Mark2>OTOF</Mark2></Mark1><Mark1>-Registerstudie: Zwei getrennte Datenbanken enthalten die Daten zur Patienten-Identifikation (blau) bzw. die klinischen und genetischen Daten (gr&#252;n).</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Figure 1: Workflow of the </Mark1><Mark1><Mark2>OTOF</Mark2></Mark1><Mark1> registry. The two registry databases separate patient-identifiable information (blue) from clinical and genetics data (green).</Mark1></Pgraph></Caption>
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