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dc.contributor.authorMittempergher, Lorenza
dc.contributor.authorPiskorz, Anna M.
dc.contributor.authorBosma, Astrid J.
dc.contributor.authorMichaut, Magali
dc.contributor.authorWisman, G. Bea A.
dc.contributor.authorKluin, Roelof J. C.
dc.contributor.authorNieuwland, Marja
dc.contributor.authorBrugman, Wim
dc.contributor.authorvan der Ven, Kevin J. W.
dc.contributor.authorMarass, Francesco
dc.contributor.authorMorris, James
dc.contributor.authorRosenfeld, Nitzan
dc.contributor.authorJimenez-Linan, Mercedes
dc.contributor.authorde Jong, Steven
dc.contributor.authorvan der Zee, Ate G. J.
dc.contributor.authorBrenton, James D.
dc.contributor.authorBernards, René
dc.date.accessioned2020-07-09T01:07:43Z
dc.date.available2020-07-09T01:07:43Z
dc.date.issued2020-07-08
dc.date.submitted2020-01-19
dc.identifier.otherpone-d-20-01710
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/307783
dc.description.abstractHigh-grade serous ovarian carcinoma (HGSOC) remains the deadliest form of epithelial ovarian cancer and despite major efforts little improvement in overall survival has been achieved. Identification of recurring “driver” genetic lesions has the potential to enable design of novel therapies for cancer. Here, we report on a study to find such new therapeutic targets for HGSOC using exome-capture sequencing approach targeting all kinase genes in 127 patient samples. Consistent with previous reports, the most frequently mutated gene was TP53 (97% mutation frequency) followed by BRCA1 (10% mutation frequency). The average mutation frequency of the kinase genes mutated from our panel was 1.5%. Intriguingly, after BRCA1, JAK3 was the most frequently mutated gene (4% mutation frequency). We tested the transforming properties of JAK3 mutants using the Ba/F3 cell-based in vitro functional assay and identified a novel gain-of-function mutation in the kinase domain of JAK3 (p.T1022I). Importantly, p.T1022I JAK3 mutants displayed higher sensitivity to the JAK3-selective inhibitor Tofacitinib compared to controls. For independent validation, we re-sequenced the entire JAK3 coding sequence using tagged amplicon sequencing (TAm-Seq) in 463 HGSOCs resulting in an overall somatic mutation frequency of 1%. TAm-Seq screening of CDK12 in the same population revealed a 7% mutation frequency. Our data confirms that the frequency of mutations in kinase genes in HGSOC is low and provides accurate estimates for the frequency of JAK3 and CDK12 mutations in a large well characterized cohort. Although p.T1022I JAK3 mutations are rare, our functional validation shows that if detected they should be considered as potentially actionable for therapy. The observation of CDK12 mutations in 7% of HGSOC cases provides a strong rationale for routine somatic testing, although more functional and clinical characterization is required to understand which nonsynonymous mutations alterations are associated with homologous recombination deficiency.
dc.languageen
dc.publisherPublic Library of Science
dc.rightsAttribution 4.0 International (CC BY 4.0)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectResearch Article
dc.subjectResearch and analysis methods
dc.subjectBiology and life sciences
dc.subjectMedicine and health sciences
dc.titleKinome capture sequencing of high-grade serous ovarian carcinoma reveals novel mutations in the JAK3 gene
dc.typeArticle
dc.date.updated2020-07-09T01:07:42Z
prism.issueIdentifier7
prism.publicationNamePLOS ONE
prism.volume15
dc.identifier.doi10.17863/CAM.54875
dcterms.dateAccepted2020-06-22
rioxxterms.versionofrecord10.1371/journal.pone.0235766
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
datacite.contributor.supervisoreditor: Fei, Peiwen
dc.contributor.orcidMittempergher, Lorenza [0000-0003-3425-3965]
dc.contributor.orcidMarass, Francesco [0000-0002-8993-7320]
dc.identifier.eissn1932-6203
pubs.funder-project-idEuropean Union Seventh Framework Programme (260791)


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)