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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Germline Mutations of Inhibins in Early-Onset Ovarian Epithelial Tumors</title><author><name sortKey="Tournier, Isabelle" sort="Tournier, Isabelle" uniqKey="Tournier I" first="Isabelle" last="Tournier">Isabelle Tournier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Marlin, Regine" sort="Marlin, Regine" uniqKey="Marlin R" first="Régine" last="Marlin">Régine Marlin</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Walton, Kelly" sort="Walton, Kelly" uniqKey="Walton K" first="Kelly" last="Walton">Kelly Walton</name><affiliation><nlm:aff id="au2"><institution>Growth Factor Signalling Laboratory, Prince Henry's Institute of Medical Research</institution><addr-line>Clayton, Australia</addr-line></nlm:aff></affiliation></author><author><name sortKey="Charbonnier, Francoise" sort="Charbonnier, Francoise" uniqKey="Charbonnier F" first="Françoise" last="Charbonnier">Françoise Charbonnier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Coutant, Sophie" sort="Coutant, Sophie" uniqKey="Coutant S" first="Sophie" last="Coutant">Sophie Coutant</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Thery, Jean Christophe" sort="Thery, Jean Christophe" uniqKey="Thery J" first="Jean-Christophe" last="Théry">Jean-Christophe Théry</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Charbonnier, Camille" sort="Charbonnier, Camille" uniqKey="Charbonnier C" first="Camille" last="Charbonnier">Camille Charbonnier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Spurrell, Cailyn" sort="Spurrell, Cailyn" uniqKey="Spurrell C" first="Cailyn" last="Spurrell">Cailyn Spurrell</name><affiliation><nlm:aff id="au3"><institution>Department of Medicine and Genome Sciences, University of Washington School of Medicine</institution><addr-line>Seattle, Washington</addr-line></nlm:aff></affiliation></author><author><name sortKey="Vezain, Myriam" sort="Vezain, Myriam" uniqKey="Vezain M" first="Myriam" last="Vezain">Myriam Vezain</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Ippolito, Lorena" sort="Ippolito, Lorena" uniqKey="Ippolito L" first="Lorena" last="Ippolito">Lorena Ippolito</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Bougeard, Gaelle" sort="Bougeard, Gaelle" uniqKey="Bougeard G" first="Gaëlle" last="Bougeard">Gaëlle Bougeard</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Roman, Horace" sort="Roman, Horace" uniqKey="Roman H" first="Horace" last="Roman">Horace Roman</name><affiliation><nlm:aff id="au4"><institution>Department of Gynaecology and Obstetrics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Tinat, Julie" sort="Tinat, Julie" uniqKey="Tinat J" first="Julie" last="Tinat">Julie Tinat</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation><affiliation><nlm:aff id="au5"><institution>Department of Genetics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Sabourin, Jean Christophe" sort="Sabourin, Jean Christophe" uniqKey="Sabourin J" first="Jean-Christophe" last="Sabourin">Jean-Christophe Sabourin</name><affiliation><nlm:aff id="au6"><institution>Department of Pathology, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Stoppa Lyonnet, Dominique" sort="Stoppa Lyonnet, Dominique" uniqKey="Stoppa Lyonnet D" first="Dominique" last="Stoppa-Lyonnet">Dominique Stoppa-Lyonnet</name><affiliation><nlm:aff id="au7"><institution>Department of Genetics, Inserm U830, Institut Curie, Paris Descartes University</institution><addr-line>Paris, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Caron, Olivier" sort="Caron, Olivier" uniqKey="Caron O" first="Olivier" last="Caron">Olivier Caron</name><affiliation><nlm:aff id="au8"><institution>Department of Genetics, Institut Gustave Roussy</institution><addr-line>France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Bressac De Paillerets, Brigitte" sort="Bressac De Paillerets, Brigitte" uniqKey="Bressac De Paillerets B" first="Brigitte" last="Bressac-De Paillerets">Brigitte Bressac-De Paillerets</name><affiliation><nlm:aff id="au8"><institution>Department of Genetics, Institut Gustave Roussy</institution><addr-line>France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Vaur, Dominique" sort="Vaur, Dominique" uniqKey="Vaur D" first="Dominique" last="Vaur">Dominique Vaur</name><affiliation><nlm:aff id="au9"><institution>Department of Cancer Genetics, Comprehensive Cancer Centre</institution><addr-line>Caen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="King, Mary Claire" sort="King, Mary Claire" uniqKey="King M" first="Mary-Claire" last="King">Mary-Claire King</name><affiliation><nlm:aff id="au3"><institution>Department of Medicine and Genome Sciences, University of Washington School of Medicine</institution><addr-line>Seattle, Washington</addr-line></nlm:aff></affiliation></author><author><name sortKey="Harrison, Craig" sort="Harrison, Craig" uniqKey="Harrison C" first="Craig" last="Harrison">Craig Harrison</name><affiliation><nlm:aff id="au2"><institution>Growth Factor Signalling Laboratory, Prince Henry's Institute of Medical Research</institution><addr-line>Clayton, Australia</addr-line></nlm:aff></affiliation></author><author><name sortKey="Frebourg, Thierry" sort="Frebourg, Thierry" uniqKey="Frebourg T" first="Thierry" last="Frebourg">Thierry Frebourg</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation><affiliation><nlm:aff id="au5"><institution>Department of Genetics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24302632</idno><idno type="pmc">4284000</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4284000</idno><idno type="RBID">PMC:4284000</idno><idno type="doi">10.1002/humu.22489</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">002582</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002582</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Germline Mutations of Inhibins in Early-Onset Ovarian Epithelial Tumors</title><author><name sortKey="Tournier, Isabelle" sort="Tournier, Isabelle" uniqKey="Tournier I" first="Isabelle" last="Tournier">Isabelle Tournier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Marlin, Regine" sort="Marlin, Regine" uniqKey="Marlin R" first="Régine" last="Marlin">Régine Marlin</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Walton, Kelly" sort="Walton, Kelly" uniqKey="Walton K" first="Kelly" last="Walton">Kelly Walton</name><affiliation><nlm:aff id="au2"><institution>Growth Factor Signalling Laboratory, Prince Henry's Institute of Medical Research</institution><addr-line>Clayton, Australia</addr-line></nlm:aff></affiliation></author><author><name sortKey="Charbonnier, Francoise" sort="Charbonnier, Francoise" uniqKey="Charbonnier F" first="Françoise" last="Charbonnier">Françoise Charbonnier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Coutant, Sophie" sort="Coutant, Sophie" uniqKey="Coutant S" first="Sophie" last="Coutant">Sophie Coutant</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Thery, Jean Christophe" sort="Thery, Jean Christophe" uniqKey="Thery J" first="Jean-Christophe" last="Théry">Jean-Christophe Théry</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Charbonnier, Camille" sort="Charbonnier, Camille" uniqKey="Charbonnier C" first="Camille" last="Charbonnier">Camille Charbonnier</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Spurrell, Cailyn" sort="Spurrell, Cailyn" uniqKey="Spurrell C" first="Cailyn" last="Spurrell">Cailyn Spurrell</name><affiliation><nlm:aff id="au3"><institution>Department of Medicine and Genome Sciences, University of Washington School of Medicine</institution><addr-line>Seattle, Washington</addr-line></nlm:aff></affiliation></author><author><name sortKey="Vezain, Myriam" sort="Vezain, Myriam" uniqKey="Vezain M" first="Myriam" last="Vezain">Myriam Vezain</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Ippolito, Lorena" sort="Ippolito, Lorena" uniqKey="Ippolito L" first="Lorena" last="Ippolito">Lorena Ippolito</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Bougeard, Gaelle" sort="Bougeard, Gaelle" uniqKey="Bougeard G" first="Gaëlle" last="Bougeard">Gaëlle Bougeard</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Roman, Horace" sort="Roman, Horace" uniqKey="Roman H" first="Horace" last="Roman">Horace Roman</name><affiliation><nlm:aff id="au4"><institution>Department of Gynaecology and Obstetrics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Tinat, Julie" sort="Tinat, Julie" uniqKey="Tinat J" first="Julie" last="Tinat">Julie Tinat</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation><affiliation><nlm:aff id="au5"><institution>Department of Genetics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Sabourin, Jean Christophe" sort="Sabourin, Jean Christophe" uniqKey="Sabourin J" first="Jean-Christophe" last="Sabourin">Jean-Christophe Sabourin</name><affiliation><nlm:aff id="au6"><institution>Department of Pathology, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Stoppa Lyonnet, Dominique" sort="Stoppa Lyonnet, Dominique" uniqKey="Stoppa Lyonnet D" first="Dominique" last="Stoppa-Lyonnet">Dominique Stoppa-Lyonnet</name><affiliation><nlm:aff id="au7"><institution>Department of Genetics, Inserm U830, Institut Curie, Paris Descartes University</institution><addr-line>Paris, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Caron, Olivier" sort="Caron, Olivier" uniqKey="Caron O" first="Olivier" last="Caron">Olivier Caron</name><affiliation><nlm:aff id="au8"><institution>Department of Genetics, Institut Gustave Roussy</institution><addr-line>France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Bressac De Paillerets, Brigitte" sort="Bressac De Paillerets, Brigitte" uniqKey="Bressac De Paillerets B" first="Brigitte" last="Bressac-De Paillerets">Brigitte Bressac-De Paillerets</name><affiliation><nlm:aff id="au8"><institution>Department of Genetics, Institut Gustave Roussy</institution><addr-line>France</addr-line></nlm:aff></affiliation></author><author><name sortKey="Vaur, Dominique" sort="Vaur, Dominique" uniqKey="Vaur D" first="Dominique" last="Vaur">Dominique Vaur</name><affiliation><nlm:aff id="au9"><institution>Department of Cancer Genetics, Comprehensive Cancer Centre</institution><addr-line>Caen, France</addr-line></nlm:aff></affiliation></author><author><name sortKey="King, Mary Claire" sort="King, Mary Claire" uniqKey="King M" first="Mary-Claire" last="King">Mary-Claire King</name><affiliation><nlm:aff id="au3"><institution>Department of Medicine and Genome Sciences, University of Washington School of Medicine</institution><addr-line>Seattle, Washington</addr-line></nlm:aff></affiliation></author><author><name sortKey="Harrison, Craig" sort="Harrison, Craig" uniqKey="Harrison C" first="Craig" last="Harrison">Craig Harrison</name><affiliation><nlm:aff id="au2"><institution>Growth Factor Signalling Laboratory, Prince Henry's Institute of Medical Research</institution><addr-line>Clayton, Australia</addr-line></nlm:aff></affiliation></author><author><name sortKey="Frebourg, Thierry" sort="Frebourg, Thierry" uniqKey="Frebourg T" first="Thierry" last="Frebourg">Thierry Frebourg</name><affiliation><nlm:aff id="au1"><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></nlm:aff></affiliation><affiliation><nlm:aff id="au5"><institution>Department of Genetics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></nlm:aff></affiliation></author></analytic><series><title level="j">Human Mutation</title><idno type="ISSN">1059-7794</idno><idno type="eISSN">1098-1004</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>To identify novel genetic bases of early-onset epithelial ovarian tumors, we used the trio exome sequencing strategy in a patient without familial history of cancer who presented metastatic serous ovarian adenocarcinomas at 21 years of age. We identified a single de novo mutation (c.1157A>G/p.Asn386Ser) within the <italic>INHBA</italic> gene encoding the βA-subunit of inhibins/activins, which play a key role in ovarian development. In vitro, this mutation alters the ratio of secreted activins and inhibins. In a second patient with early-onset serous borderline papillary cystadenoma, we identified an unreported germline mutation (c.179G>T/p.Arg60Leu) of the <italic>INHA</italic> gene encoding the α-subunit, the partner of the βA-subunit. This mutation also alters the secreted activin/inhibin ratio, by disrupting both inhibin A and inhibin B biosynthesis. In a cohort of 62 cases, we detected an additional unreported germline mutation of the <italic>INHBA</italic> gene (c.839G>A/p.Gly280Glu). Our results strongly suggest that inhibin mutations contribute to the genetic determinism of epithelial ovarian tumors.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Burdette, Je" uniqKey="Burdette J">JE Burdette</name></author><author><name sortKey="Jeruss, Js" uniqKey="Jeruss J">JS Jeruss</name></author><author><name sortKey="Kurley, Sj" uniqKey="Kurley S">SJ Kurley</name></author><author><name sortKey="Lee, Ej" uniqKey="Lee E">EJ Lee</name></author><author><name sortKey="Woodruff, Tk" uniqKey="Woodruff T">TK Woodruff</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Coutant, S" uniqKey="Coutant S">S Coutant</name></author><author><name sortKey="Cabot, C" uniqKey="Cabot C">C Cabot</name></author><author><name sortKey="Lefebvre, A" uniqKey="Lefebvre A">A Lefebvre</name></author><author><name sortKey="Leonard, M" uniqKey="Leonard M">M Léonard</name></author><author><name sortKey="Prieur Gaston, 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Hum Mutat</journal-id><journal-id journal-id-type="iso-abbrev">Hum. Mutat</journal-id><journal-id journal-id-type="publisher-id">humu</journal-id><journal-title-group><journal-title>Human Mutation</journal-title></journal-title-group><issn pub-type="ppub">1059-7794</issn><issn pub-type="epub">1098-1004</issn><publisher><publisher-name>BlackWell Publishing Ltd</publisher-name><publisher-loc>Oxford, UK</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">24302632</article-id><article-id pub-id-type="pmc">4284000</article-id><article-id pub-id-type="doi">10.1002/humu.22489</article-id><article-categories><subj-group subj-group-type="heading"><subject>Brief Reports</subject></subj-group></article-categories><title-group><article-title>Germline Mutations of Inhibins in Early-Onset Ovarian Epithelial Tumors</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Tournier</surname><given-names>Isabelle</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Marlin</surname><given-names>Régine</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Walton</surname><given-names>Kelly</given-names></name><xref ref-type="aff" rid="au2">2</xref></contrib><contrib contrib-type="author"><name><surname>Charbonnier</surname><given-names>Françoise</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Coutant</surname><given-names>Sophie</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Théry</surname><given-names>Jean-Christophe</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Charbonnier</surname><given-names>Camille</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Spurrell</surname><given-names>Cailyn</given-names></name><xref ref-type="aff" rid="au3">3</xref></contrib><contrib contrib-type="author"><name><surname>Vezain</surname><given-names>Myriam</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Ippolito</surname><given-names>Lorena</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Bougeard</surname><given-names>Gaëlle</given-names></name><xref ref-type="aff" rid="au1">1</xref></contrib><contrib contrib-type="author"><name><surname>Roman</surname><given-names>Horace</given-names></name><xref ref-type="aff" rid="au4">4</xref></contrib><contrib contrib-type="author"><name><surname>Tinat</surname><given-names>Julie</given-names></name><xref ref-type="aff" rid="au1">1</xref><xref ref-type="aff" rid="au5">5</xref></contrib><contrib contrib-type="author"><name><surname>Sabourin</surname><given-names>Jean-Christophe</given-names></name><xref ref-type="aff" rid="au6">6</xref></contrib><contrib contrib-type="author"><name><surname>Stoppa-Lyonnet</surname><given-names>Dominique</given-names></name><xref ref-type="aff" rid="au7">7</xref></contrib><contrib contrib-type="author"><name><surname>Caron</surname><given-names>Olivier</given-names></name><xref ref-type="aff" rid="au8">8</xref></contrib><contrib contrib-type="author"><name><surname>Bressac-de Paillerets</surname><given-names>Brigitte</given-names></name><xref ref-type="aff" rid="au8">8</xref></contrib><contrib contrib-type="author"><name><surname>Vaur</surname><given-names>Dominique</given-names></name><xref ref-type="aff" rid="au9">9</xref></contrib><contrib contrib-type="author"><name><surname>King</surname><given-names>Mary-Claire</given-names></name><xref ref-type="aff" rid="au3">3</xref></contrib><contrib contrib-type="author"><name><surname>Harrison</surname><given-names>Craig</given-names></name><xref ref-type="aff" rid="au2">2</xref></contrib><contrib contrib-type="author"><name><surname>Frebourg</surname><given-names>Thierry</given-names></name><xref ref-type="aff" rid="au1">1</xref><xref ref-type="aff" rid="au5">5</xref><xref ref-type="corresp" rid="cor1">*</xref></contrib><aff id="au1"><label>1</label><institution>Inserm U1079, Institute for Research and Innovation in Biomedicine, University of Rouen</institution><addr-line>Rouen, Cancéropôle Nord-Ouest, France</addr-line></aff><aff id="au2"><label>2</label><institution>Growth Factor Signalling Laboratory, Prince Henry's Institute of Medical Research</institution><addr-line>Clayton, Australia</addr-line></aff><aff id="au3"><label>3</label><institution>Department of Medicine and Genome Sciences, University of Washington School of Medicine</institution><addr-line>Seattle, Washington</addr-line></aff><aff id="au4"><label>4</label><institution>Department of Gynaecology and Obstetrics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></aff><aff id="au5"><label>5</label><institution>Department of Genetics, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></aff><aff id="au6"><label>6</label><institution>Department of Pathology, University Hospital of Rouen</institution><addr-line>Rouen, France</addr-line></aff><aff id="au7"><label>7</label><institution>Department of Genetics, Inserm U830, Institut Curie, Paris Descartes University</institution><addr-line>Paris, France</addr-line></aff><aff id="au8"><label>8</label><institution>Department of Genetics, Institut Gustave Roussy</institution><addr-line>France</addr-line></aff><aff id="au9"><label>9</label><institution>Department of Cancer Genetics, Comprehensive Cancer Centre</institution><addr-line>Caen, France</addr-line></aff></contrib-group><author-notes><fn><p>Contract grant sponsors: INCa; French National Cancer Institute; Fondation pour la Recherche Medicale.</p></fn><corresp id="cor1">*Correspondence to: Thierry Frebourg, Inserm U1079, Faculty of Medicine, 22 boulevard Gambetta, Rouen Cedex 76183, France. E-mail: <email>frebourg@chu-rouen.fr</email></corresp></author-notes><pub-date pub-type="ppub"><month>3</month><year>2014</year></pub-date><pub-date pub-type="epub"><day>02</day><month>12</month><year>2013</year></pub-date><volume>35</volume><issue>3</issue><fpage>294</fpage><lpage>297</lpage><history><date date-type="received"><day>11</day><month>9</month><year>2013</year></date><date date-type="accepted"><day>22</day><month>11</month><year>2013</year></date></history><permissions><copyright-statement>© 2013 The Authors. *<italic>Human Mutation</italic> published by Wiley Periodicals, Inc.</copyright-statement><copyright-year>2013</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><license-p>This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.</license-p></license></permissions><abstract><p>To identify novel genetic bases of early-onset epithelial ovarian tumors, we used the trio exome sequencing strategy in a patient without familial history of cancer who presented metastatic serous ovarian adenocarcinomas at 21 years of age. We identified a single de novo mutation (c.1157A>G/p.Asn386Ser) within the <italic>INHBA</italic> gene encoding the βA-subunit of inhibins/activins, which play a key role in ovarian development. In vitro, this mutation alters the ratio of secreted activins and inhibins. In a second patient with early-onset serous borderline papillary cystadenoma, we identified an unreported germline mutation (c.179G>T/p.Arg60Leu) of the <italic>INHA</italic> gene encoding the α-subunit, the partner of the βA-subunit. This mutation also alters the secreted activin/inhibin ratio, by disrupting both inhibin A and inhibin B biosynthesis. In a cohort of 62 cases, we detected an additional unreported germline mutation of the <italic>INHBA</italic> gene (c.839G>A/p.Gly280Glu). Our results strongly suggest that inhibin mutations contribute to the genetic determinism of epithelial ovarian tumors.</p></abstract><kwd-group><kwd>cancer</kwd><kwd>ovary</kwd><kwd>exome</kwd><kwd>inhibin</kwd><kwd>activin</kwd><kwd>INHA</kwd><kwd>INHBA</kwd></kwd-group></article-meta></front><body><p>In many families suspected to present an inherited form of cancer, analyses focused on genes known to be involved in Mendelian predisposition to cancer often remain negative, despite a personal and/or familial history strongly suggestive of a genetic determinism. Therefore, other pathways involved in cancer genetics remain to be identified. We considered that the comparative index case-parents exome sequencing strategy, originally developed to detect de novo mutation in early-onset severe conditions such as mental retardation [<xref rid="b19" ref-type="bibr">Vissers et al., 2010</xref>], could be a powerful method to identify novel molecular bases of cancer. Indeed, given the numerous examples of de novo mutations involved in genetic conditions recently described in humans [<xref rid="b18" ref-type="bibr">Veltman and Brunner, 2012</xref>], a fraction of early-onset sporadic cancer cases could result from de novo germline mutations affecting unknown cancer predisposing genes. The genes affected by these de novo mutations may represent novel candidate genes for familial forms of cancer.</p><p>For this study, we used as a paradigm sporadic early-onset epithelial ovarian cancer. In the general population, epithelial ovarian tumors usually occur after 50 years of age and the development of epithelial ovarian tumors before the age of 40 is therefore suggestive, in clinical practice, of a genetic determinism. Early-onset epithelial ovarian tumors occur in patients with germline mutations of <italic>BRCA1</italic>, <italic>BRCA2</italic>, and the <italic>MMR</italic> genes [<xref rid="b8" ref-type="bibr">Lynch et al., 2009</xref>], and recently, germline mutations of other genes known to be involved in cancer such as <italic>BARD1, BRIP1, CHEK2, MRE11A, NBN, PALB2, RAD50, RAD51C</italic>, <italic>RAD51D</italic>, or <italic>TP53</italic> have been reported in patients with early-onset epithelial ovarian cancers [<xref rid="b7" ref-type="bibr">Loveday et al., 2011</xref>; <xref rid="b20" ref-type="bibr">Walsh et al., 2011</xref>]. Nevertheless, in a fraction of patients developing early-onset epithelial ovarian tumors, genetic analyses of these genes remain negative, suggesting the existence of uncharacterized deleterious mutations in other genes. We report here the identification by exome sequencing of a de novo germline mutation affecting the βA-subunit of inhibins/activins in a sporadic case of early-onset serous ovarian cancer and provide arguments indicating that germline inhibin mutations contribute to the genetic determinism of epithelial ovarian tumors by altering the inhibin/activin production.</p><p>The patient is a French woman of Caucasian origin who had developed at 21 years of age large bilateral ovarian tumors corresponding to serous low-grade ovarian adenocarcinomas (FIGO IV). These tumors were complicated by numerous peritoneal, uterine, colorectal, and pancreatic metastases that lead to a radical surgery followed by chemotherapy. Her father and mother, at 56 and 52 years of age, respectively, had neither personal nor familial history of cancer. In cancer genetics, the development of a bilateral ovarian adenocarcinoma at 21 years of age is strongly suggestive of a genetic predisposition. Screening for <italic>BRCA1</italic>, <italic>BRCA2</italic> and <italic>TP53</italic> point mutations and genomic rearrangements in the index case peripheral blood DNA had revealed no germline mutation. Considering the absence of cancer in the family, we speculated that a germline de novo mutation could be responsible for the early-onset of the tumors observed in this patient. To identify such mutations, we performed a comparative exome analysis of the patient and her healthy parents (Supp. Materials and Methods). For the parents, exome sequencing was performed on peripheral blood DNA. For the index case, the exome was performed on genomic DNA extracted from nontumoral ovarian tissue to be able to detect also postzygotic de novo mutations that may be present only in the ovarian tissue and could be missed by analyzing the peripheral blood DNA. Across the three exomes, we obtained an average of 8 Gb with 98% of mappable sequences, a mean Read Depth of 69x, 88% of bases were covered to a minimum depth of 10x and 89% of the read bases had a Qscore above 30. On average, 17,395 exonic variants were identified per exome. First, variants with a read coverage of less than 10× and a Qscore <30 were filtered out. We first checked in the index case exome the absence of deleterious mutations within the different genes known to be involved in the genetic determinism of ovarian cancer [<xref rid="b8" ref-type="bibr">Lynch et al., 2009</xref>; <xref rid="b7" ref-type="bibr">Loveday et al., 2011</xref>; <xref rid="b20" ref-type="bibr">Walsh et al., 2011</xref>]. Then, using the Exome Variation Analyser software [<xref rid="b2" ref-type="bibr">Coutant et al., 2012</xref>], we filtered the variations against the 1000 Genomes Project data set (May 2011, 20101123 release) and the ESP cohort data set (ESP6500), using an allelic frequency filter of 0.001. Variations present in our in-house database including 72 exomes were also filtered out. With these additional filters, an average of 295 novel variations was retained per individual. When we subtracted the variants detected in the parents from those detected in the index case to detect de novo mutations, 46 variations remained and were analyzed in more detail. Visualization of the BAM files revealed that 37/46 variations were in fact present in a low fraction of the reads obtained in the parents. Among the remaining variations, eight were detected in less than 20% of the reads and Sanger sequencing performed on such variations did not confirm their existence. These variations likely correspond to sequencing artifacts. After this filtering scheme, only one de novo mutation was detected in the patient exome: the c.1157A>G/p.Asn386Ser mutation, within the <italic>INHBA</italic> gene (NM_002192.2; MIM #147290; <ext-link ext-link-type="uri" xlink:href="http://www.lovd.nl/inhba">www.lovd.nl/inhba</ext-link>) encoding the βA-subunit of inhibin/activin proteins that play a key role in ovary [<xref rid="b4" ref-type="bibr">Knight et al., 2012</xref>].</p><p>The Asn386 residue is located within the carboxy-terminal mature domain of the inhibin βA-subunit and is conserved from human to chicken. This previously unreported mutation is absent from the 1000 Genomes Project data set (May 2011, 20101123 release) and from the Exome Sequencing Project cohort (ESP6500), which includes 4,300 European American individuals. Targeted Sanger sequencing confirmed the presence of this heterozygous mutation in the nontumoral and tumoral ovarian tissues of the patient and also in her peripheral blood. Its absence was confirmed in the peripheral blood DNA of the parents. These results indicate that the c.1157A>G, p.Asn386Ser <italic>INHBA</italic> mutation is a bona fide germline de novo mutation that had probably occurred at the prezygotic level.</p><p><italic>INHBA</italic> is a member of the TGF-β super family and encodes the βA-subunit of the activins/inhibins. Homodimerization of the βA-subunit results in activin A and heterodimerization of the βA-subunit with the inhibin α-subunit, encoded by the <italic>INHA</italic> gene (MIM #147380), results in inhibin A [<xref rid="b21" ref-type="bibr">Walton et al., 2012</xref>]. Activins/inhibins play a crucial role in ovarian development and, in ovaries, the different subunits are mostly secreted by granulosa cells and the targeted cells include epithelial cells [<xref rid="b4" ref-type="bibr">Knight et al., 2012</xref>]. The average rate of de novo mutations per exome per generation is only 0–1 [<xref rid="b15" ref-type="bibr">Sanders et al., 2012</xref>; <xref rid="b18" ref-type="bibr">Veltman and Brunner, 2012</xref>]. This rate and the key role of inhibin in ovaries make very unlikely that this <italic>INHBA</italic> mutation, identified as the single de novo mutation in a sporadic bilateral epithelial ovarian cancer occurring at 21 years of age, is not related to ovarian cancer and that more relevant mutations were missed in the 12% fraction analyzed at lower coverage in the trio exomes.</p><p>To determine the impact of the detected <italic>INHBA</italic> mutation, we performed functional assays in HEK-293F cells (Supp. Materials and Methods). After transient cotransfection of cells with plasmids expressing wild-type α-subunit and wild-type or mutant βA-subunit, we determined the quantitative effect of the mutation on the activin A and inhibin A production in conditioned media, using an E4/E4 and an E4/R1 immunoassay, respectively, as previously described [<xref rid="b10" ref-type="bibr">Makanji et al., 2008</xref>]. As shown in Figure<xref ref-type="fig" rid="fig01">1</xref>, we observed for the p.Asn386Ser mutant as compared with the wild-type βA-subunit, a 28% decrease in activin A production and a 44% increase in inhibin A production (<italic>P</italic> = 0.0007 and <italic>P</italic> = 0.048, respectively, two-tailed <italic>t</italic>-test). Activin A has been shown to inhibit the growth of epithelial cells including breast cancer cells and ovarian cancer cells through Smads and CDK inhibitor activation [<xref rid="b1" ref-type="bibr">Burdette et al., 2005</xref>; <xref rid="b14" ref-type="bibr">Ramachandran et al., 2009</xref>] suggesting therefore that a reduction of activin A, such as the one observed with the <italic>INHBA</italic> p.Asn386Ser mutation, could favor the growth of epithelial ovarian cells. Therefore, the identification in an early-onset sporadic bilateral ovarian adenocarcinoma case of a single de novo mutation of a gene playing a pivotal role in ovarian development and the functional impact of this mutation are two key arguments indicating that germline <italic>INHBA</italic> mutation can cause, alone or in combination with other transmitted genetic variations, early-onset epithelial ovarian cancer.</p><fig id="fig01" position="float"><label>Figure 1</label><caption><p>Impact of the <italic>INHBA</italic> p.Asn386Ser mutation on the amount of secreted activin A and inhibin A. Activin A and inhibin A concentrations in the conditioned media of HEK-293F cells, 2 days after cotransfection of plasmids expressing the inhibin α-subunit and the wild-type or mutant (p.Asn356Ser) βA-subunits, were measured using an E4/E4 immunoassay and an E4/R1 immunoassay, respectively. The results correspond to three independent transfections. *, Two-tailed <italic>t</italic>-test at <italic>P</italic> < 0.05.</p></caption><graphic xlink:href="humu0035-0294-f1"></graphic></fig><p>To determine the prevalence of germline <italic>INHBA</italic> mutations in early-onset ovarian tumors, we then screened for germline <italic>INHBA</italic> mutations by Sanger sequencing 43 other patients (14 originated from France and 29 from USA), who had developed ovarian epithelial tumors before 40 years of age and in whom analysis of <italic>BRCA1</italic> and <italic>BRCA2</italic> genes had revealed no deleterious mutation. We observed no additional mutation of the <italic>INHBA</italic> gene in these 43 patients. Since the identified de novo mutation of <italic>INHBA</italic> alters the ratio of inhibin A versus activin A and the βA-subunit heterodimerizes with the α-subunit to form inhibin A, we also screened the 14 French patients for germline mutations of the <italic>INHA</italic> gene encoding the α-subunit. This analysis revealed, in a Caucasian patient who presented at 29 years of age a serous borderline papillary cystadenoma, a germline heterozygous mutation c.179G>T/p.Arg60Leu (NM_002191.3; <ext-link ext-link-type="uri" xlink:href="http://www.lovd.nl/INHA">www.lovd.nl/INHA</ext-link>), which had not been previously reported in the different databases. DNA from the unaffected parents was not available. The presence of this heterozygous <italic>INHA</italic> mutation was confirmed in the ovarian tumor of the patient. Arg60 is a very conserved residue that forms part of a secondary furin cleavage site located at the amino terminus of the inhibin α prodomain [<xref rid="b21" ref-type="bibr">Walton et al., 2012</xref>]. The measurement, using immunoassays, of inhibin A and B production in conditioned media from HEK-293F cells cotransfected with plasmids expressing wild-type or mutant α-subunit and wild-type βA- or βB-subunit (<xref ref-type="fig" rid="fig02">Fig. 2</xref>), revealed that the p.Arg60Leu <italic>INHA</italic> mutation disrupts both inhibin A biosynthesis (75% decrease, <italic>P</italic> = 0.00006) and inhibin B biosynthesis (55% decrease, <italic>P</italic> = 0.002). Remarkably, <italic>INHA</italic> −/− female mice specifically develop mixed ovarian tumors indicating that <italic>INHA</italic> could act as a tumor suppressor gene with a gonadal specificity [<xref rid="b11" ref-type="bibr">Matzuk et al., 1992</xref>], which is in agreement with the possible oncogenic effect of the p.Arg60Leu <italic>INHA</italic> gene detected in this study.</p><fig id="fig02" position="float"><label>Figure 2</label><caption><p>The impact of the <italic>INHA</italic> p.Arg60Leu mutation on the amount of secreted inhibins A and B. Activin A and B concentrations in the conditioned media of HEK-293F cells, 2 days after cotransfection of plasmids expressing the wild-type or mutant (p.Arg60Leu) inhibin α-subunit and the wild-type βA- or βB-subunits, were measured using an E4/R1 immunoassay and a C5/R1 immunoassay, respectively. The results correspond to six independent transfections. *, Two-tailed <italic>t</italic>-test at <italic>P</italic> < 0.05.</p></caption><graphic xlink:href="humu0035-0294-f2"></graphic></fig><p>Exome sequencing data are available for a cohort of 316 high-grade serous ovarian tumors [The <xref rid="b17" ref-type="bibr">Cancer Genome Atlas Network, 2011</xref>]. Somatic alterations of the <italic>INHA</italic> or <italic>INHBA</italic> genes are reported in 5% of the cases but no germline mutation of these genes is reported. Because this TCGA cohort is not enriched in early-onset cases but rather reflects the overall age distribution of serous ovarian cancer, we decided to complement the <italic>INHBA</italic> and <italic>INHA</italic> mutation screening by Sanger sequencing a second series of 62 other French early-onset ovarian epithelial cases (<40 years), without detectable <italic>BRCA</italic> mutation. We detected within the <italic>INHBA</italic> gene an additional new germline heterozygous variation, c.839G>A, p.Gly280Glu (NM_002192.2). This variation was detected in a patient who developed a serous papillary ovarian adenocarcinoma at 27 years of age. DNA sample from the unaffected parents was not available. The Gly280 residue lies within the prodomain of the α-subunit in a region involved in the interaction with the extracellular matrix [<xref rid="b6" ref-type="bibr">Li et al., 2010</xref>]. Interestingly, we also detected in this cohort several nonsynonymous variants of the <italic>INHA</italic> and <italic>INHBA</italic> that are reported in the databases associated with a low allele frequency (Supp. Table S1). To check for a possible enrichment of rare nonsynonymous variants in our patient cohort compared with the general population, we compared, using five statistical methods dedicated to rare variants, the overall load of rare nonsynonymous variants within <italic>INHBA</italic> and <italic>INHA</italic> between the total replication cohort of 76 French early-onset ovarian epithelial tumor cases (corresponding to the 14 French early-onset ovarian tumor cases extended to 62 additional other French cases also analyzed for <italic>INHBA</italic> and <italic>INHA</italic> mutations) and two control sequencing datasets, respectively, extracted from the 1000 Genomes Project and from the EVS6500 project (Supp. Materials and Methods). Despite limitations due to both potential population stratification bias and heterogeneity in sequencing technologies, all of the five statistical methods used, including burden and bidirectional tests [<xref rid="b16" ref-type="bibr">Stitziel et al., 2011</xref>], agree on a significant enrichment (Supp. Table S2) providing an additional argument in favor of the implication of inhibin mutations in ovarian cancer.</p><p>In conclusion, we think that this study provides the following strong arguments showing that alteration of the inhibin/activin pathway may contribute to the development of early-onset epithelial ovarian tumors by the alteration of the inhibin/activin ratio and, therefore, alteration of the cross-talk between granulosa and epithelial cells: (1) the identification, in a bilateral epithelial ovarian cancer developed at 21 years of age, of only one de novo mutation affecting the <italic>INHBA</italic> that encodes the βA-subunit of inhibin/activin, (2) the role of the inhibin pathway in ovaries, (3) the impact of the <italic>INHBA</italic> mutation on inhibin/activin production, (4) the subsequent identification of a mutation affecting <italic>INHA</italic>, which encodes the partner of the βA-subunit, also disrupting in vitro the inhibin/activin production, (5) the existence of an animal model implicating this gene as a tumor suppressor gene with gonadal specificity, and (6) the enrichment of rare inhibin variants in patients with early-onset ovarian cancers, as compared with control sequencing datasets.</p><p>More generally, this study highlights the power of comparative trio exome analysis for identifying new molecular pathways involved in the genetic determinism of cancer, by the detection of de novo mutations in patients presenting early-onset single or multiple primary tumors.</p></body><back><ack><p>The authors thank Prof. Mario Tosi for reading the manuscript and commenting on it.</p><p><italic>Disclosure statement</italic>: The authors 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