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Clonal evolution in relapsed acute myeloid leukaemia revealed by whole-genome sequencing | Nature

<!DOCTYPE html> <html lang="en" class="grade-c"> <head> <title>Clonal evolution in relapsed acute myeloid leukaemia revealed by whole-genome sequencing | Nature</title> <link rel="alternate" type="application/rss+xml" href="https://www.nature.com/nature.rss"/> <script id="save-data-connection-testing"> function hasConnection() { return navigator.connection || navigator.mozConnection || navigator.webkitConnection || navigator.msConnection; } function createLink(src) { var preloadLink = document.createElement("link"); preloadLink.rel = "preload"; preloadLink.href = src; preloadLink.as = "font"; preloadLink.type = "font/woff2"; preloadLink.crossOrigin = ""; document.head.insertBefore(preloadLink, document.head.firstChild); } var connectionDetail = { saveDataEnabled: false, slowConnection: false }; var connection = hasConnection(); if (connection) { connectionDetail.saveDataEnabled = connection.saveData; if (/\slow-2g|2g/.test(connection.effectiveType)) { connectionDetail.slowConnection = true; } } if (!(connectionDetail.saveDataEnabled || connectionDetail.slowConnection)) { createLink("/static/fonts/HardingText-Regular-Web-cecd90984f.woff2"); } else { document.documentElement.classList.add('save-data'); } </script> <link rel="preconnect" href="https://cmp.nature.com" crossorigin> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="applicable-device" content="pc,mobile"> <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=5,user-scalable=yes"> <meta name="360-site-verification" content="5a2dc4ab3fcb9b0393241ffbbb490480" /> <script data-test="dataLayer"> window.dataLayer = [{"content":{"category":{"contentType":"letter","legacy":{"webtrendsPrimaryArticleType":"research","webtrendsSubjectTerms":"acute-myeloid-leukaemia;medical-research;mutation;sequencing","webtrendsContentCategory":null,"webtrendsContentCollection":null,"webtrendsContentGroup":"Nature","webtrendsContentGroupType":null,"webtrendsContentSubGroup":"Letter","status":null}},"article":{"doi":"10.1038/nature10738"},"attributes":{"cms":null,"deliveryPlatform":"oscar","copyright":{"open":true,"legacy":{"webtrendsLicenceType":"http://creativecommons.org/licenses/by-nc-sa/3.0/"}}},"contentInfo":{"authors":["Li Ding","Timothy J. Ley","David E. Larson","Christopher A. Miller","Daniel C. Koboldt","John S. Welch","Julie K. Ritchey","Margaret A. Young","Tamara Lamprecht","Michael D. McLellan","Joshua F. McMichael","John W. Wallis","Charles Lu","Dong Shen","Christopher C. Harris","David J. Dooling","Robert S. Fulton","Lucinda L. Fulton","Ken Chen","Heather Schmidt","Joelle Kalicki-Veizer","Vincent J. Magrini","Lisa Cook","Sean D. McGrath","Tammi L. Vickery","Michael C. Wendl","Sharon Heath","Mark A. Watson","Daniel C. Link","Michael H. Tomasson","William D. Shannon","Jacqueline E. Payton","Shashikant Kulkarni","Peter Westervelt","Matthew J. Walter","Timothy A. Graubert","Elaine R. Mardis","Richard K. Wilson","John F. 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Many patients with acute myeloid leukaemia (AML) achieve remission, but it is often short-lived and the returned disease is usually refractory to therapy. Genome sequencing of eight patients with AML before and after relapse reveals two major patterns of tumour cell evolution. The founding clone survives chemotherapy in all patients, and, in one clonal pattern, it acquires new mutations and expands at relapse. In the other, a subclone surviving from the original tumour expands and then acquires new mutations. Comparisons of relapse-specific and primary tumour mutations point to an increase in transversions, implying DNA damage caused by cytotoxic chemotherapy. This work demonstrates that the AML genome in an individual patient presents a moving target, and highlights the importance of striving to eradicate both the founding clone and all of its subclones. Most patients with acute myeloid leukaemia (AML) die from progressive disease after relapse, which is associated with clonal evolution at the cytogenetic level1,2 . To determine the mutational spectrum associated with relapse, we sequenced the primary tumour and relapse genomes from eight AML patients, and validated hundreds of somatic mutations using deep sequencing; this allowed us to define clonality and clonal evolution patterns precisely at relapse. In addition to discovering novel, recurrently mutated genes (for example, WAC, SMC3, DIS3, DDX41 and DAXX) in AML, we also found two major clonal evolution patterns during AML relapse: (1) the founding clone in the primary tumour gained mutations and evolved into the relapse clone, or (2) a subclone of the founding clone survived initial therapy, gained additional mutations and expanded at relapse. In all cases, chemotherapy failed to eradicate the founding clone. The comparison of relapse-specific versus primary tumour mutations in all eight cases revealed an increase in transversions, probably due to DNA damage caused by cytotoxic chemotherapy. These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions.","datePublished":"2012-01-11T00:00:00Z","dateModified":"2012-01-11T00:00:00Z","pageStart":"506","pageEnd":"510","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","sameAs":"https://doi.org/10.1038/nature10738","keywords":["Acute myeloid leukaemia","Medical research","Mutation","Sequencing","Science","Humanities and Social Sciences","multidisciplinary"],"image":["https://media.springernature.com/lw1200/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig1_HTML.jpg","https://media.springernature.com/lw1200/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig2_HTML.jpg","https://media.springernature.com/lw1200/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig3_HTML.jpg"],"isPartOf":{"name":"Nature","issn":["1476-4687","0028-0836"],"volumeNumber":"481","@type":["Periodical","PublicationVolume"]},"publisher":{"name":"Nature Publishing Group UK","logo":{"url":"https://www.springernature.com/app-sn/public/images/logo-springernature.png","@type":"ImageObject"},"@type":"Organization"},"author":[{"name":"Li Ding","affiliation":[{"name":"The Genome Institute, Washington University","address":{"name":"The Genome Institute, Washington University, St Louis, USA","@type":"PostalAddress"},"@type":"Organization"},{"name":"Washington University","address":{"name":"Department of Genetics, Washington University, St Louis, USA","@type":"PostalAddress"},"@type":"Organization"}],"@type":"Person"},{"name":"Timothy J. 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Many patients with acute myeloid leukaemia (AML) achieve remission, but it is often short-lived and the returned disease is usually refractory to therapy. Genome sequencing of eight patients with AML before and after relapse reveals two major patterns of tumour cell evolution. The founding clone survives chemotherapy in all patients, and, in one clonal pattern, it acquires new mutations and expands at relapse. In the other, a subclone surviving from the original tumour expands and then acquires new mutations. Comparisons of relapse-specific and primary tumour mutations point to an increase in transversions, implying DNA damage caused by cytotoxic chemotherapy. This work demonstrates that the AML genome in an individual patient presents a moving target, and highlights the importance of striving to eradicate both the founding clone and all of its subclones. Most patients with acute myeloid leukaemia (AML) die from progressive disease after relapse, which is associated with clonal evolution at the cytogenetic level1,2 . To determine the mutational spectrum associated with relapse, we sequenced the primary tumour and relapse genomes from eight AML patients, and validated hundreds of somatic mutations using deep sequencing; this allowed us to define clonality and clonal evolution patterns precisely at relapse. In addition to discovering novel, recurrently mutated genes (for example, WAC, SMC3, DIS3, DDX41 and DAXX) in AML, we also found two major clonal evolution patterns during AML relapse: (1) the founding clone in the primary tumour gained mutations and evolved into the relapse clone, or (2) a subclone of the founding clone survived initial therapy, gained additional mutations and expanded at relapse. In all cases, chemotherapy failed to eradicate the founding clone. The comparison of relapse-specific versus primary tumour mutations in all eight cases revealed an increase in transversions, probably due to DNA damage caused by cytotoxic chemotherapy. These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions."/> <meta name="prism.issn" content="1476-4687"/> <meta name="prism.publicationName" content="Nature"/> <meta name="prism.publicationDate" content="2012-01-11"/> <meta name="prism.volume" content="481"/> <meta name="prism.number" content="7382"/> <meta name="prism.section" content="OriginalPaper"/> <meta name="prism.startingPage" content="506"/> <meta name="prism.endingPage" content="510"/> <meta name="prism.copyright" content="2011 The Author(s)"/> <meta name="prism.rightsAgent" content="journalpermissions@springernature.com"/> <meta name="prism.url" content="https://www.nature.com/articles/nature10738"/> <meta name="prism.doi" content="doi:10.1038/nature10738"/> <meta name="citation_pdf_url" content="https://www.nature.com/articles/nature10738.pdf"/> <meta name="citation_fulltext_html_url" content="https://www.nature.com/articles/nature10738"/> <meta name="citation_journal_title" content="Nature"/> <meta name="citation_journal_abbrev" content="Nature"/> <meta name="citation_publisher" content="Nature Publishing Group"/> <meta name="citation_issn" content="1476-4687"/> <meta name="citation_title" content="Clonal evolution in relapsed acute myeloid leukaemia revealed by whole-genome sequencing"/> <meta name="citation_volume" content="481"/> <meta name="citation_issue" content="7382"/> <meta name="citation_publication_date" content="2012/01"/> <meta name="citation_online_date" content="2012/01/11"/> <meta name="citation_firstpage" content="506"/> <meta name="citation_lastpage" content="510"/> <meta name="citation_article_type" content="Article"/> <meta name="citation_fulltext_world_readable" content=""/> <meta name="citation_language" content="en"/> <meta name="dc.identifier" content="doi:10.1038/nature10738"/> <meta name="DOI" content="10.1038/nature10738"/> <meta name="size" content="104719"/> <meta name="citation_doi" content="10.1038/nature10738"/> <meta name="citation_springer_api_url" content="http://api.springer.com/xmldata/jats?q=doi:10.1038/nature10738&amp;api_key="/> <meta name="description" content="The sequencing of AML genomes of eight patients before and after relapse reveals two major patterns of clonal evolution, with chemotherapy appearing to have a role in both patterns. Many patients with acute myeloid leukaemia (AML) achieve remission, but it is often short-lived and the returned disease is usually refractory to therapy. Genome sequencing of eight patients with AML before and after relapse reveals two major patterns of tumour cell evolution. The founding clone survives chemotherapy in all patients, and, in one clonal pattern, it acquires new mutations and expands at relapse. In the other, a subclone surviving from the original tumour expands and then acquires new mutations. Comparisons of relapse-specific and primary tumour mutations point to an increase in transversions, implying DNA damage caused by cytotoxic chemotherapy. This work demonstrates that the AML genome in an individual patient presents a moving target, and highlights the importance of striving to eradicate both the founding clone and all of its subclones. Most patients with acute myeloid leukaemia (AML) die from progressive disease after relapse, which is associated with clonal evolution at the cytogenetic level1,2 . To determine the mutational spectrum associated with relapse, we sequenced the primary tumour and relapse genomes from eight AML patients, and validated hundreds of somatic mutations using deep sequencing; this allowed us to define clonality and clonal evolution patterns precisely at relapse. In addition to discovering novel, recurrently mutated genes (for example, WAC, SMC3, DIS3, DDX41 and DAXX) in AML, we also found two major clonal evolution patterns during AML relapse: (1) the founding clone in the primary tumour gained mutations and evolved into the relapse clone, or (2) a subclone of the founding clone survived initial therapy, gained additional mutations and expanded at relapse. In all cases, chemotherapy failed to eradicate the founding clone. The comparison of relapse-specific versus primary tumour mutations in all eight cases revealed an increase in transversions, probably due to DNA damage caused by cytotoxic chemotherapy. These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions."/> <meta name="dc.creator" content="Ding, Li"/> <meta name="dc.creator" content="Ley, Timothy J."/> <meta name="dc.creator" content="Larson, David E."/> <meta name="dc.creator" content="Miller, Christopher A."/> <meta name="dc.creator" content="Koboldt, Daniel C."/> <meta name="dc.creator" content="Welch, John S."/> <meta name="dc.creator" content="Ritchey, Julie K."/> <meta name="dc.creator" content="Young, Margaret A."/> <meta name="dc.creator" content="Lamprecht, Tamara"/> <meta name="dc.creator" content="McLellan, Michael D."/> <meta name="dc.creator" content="McMichael, Joshua F."/> <meta name="dc.creator" content="Wallis, John W."/> <meta name="dc.creator" content="Lu, Charles"/> <meta name="dc.creator" content="Shen, Dong"/> <meta name="dc.creator" content="Harris, Christopher C."/> <meta name="dc.creator" content="Dooling, David J."/> <meta name="dc.creator" content="Fulton, Robert S."/> <meta name="dc.creator" content="Fulton, Lucinda L."/> <meta name="dc.creator" content="Chen, Ken"/> <meta name="dc.creator" content="Schmidt, Heather"/> <meta name="dc.creator" content="Kalicki-Veizer, Joelle"/> <meta name="dc.creator" content="Magrini, Vincent J."/> <meta name="dc.creator" content="Cook, Lisa"/> <meta name="dc.creator" content="McGrath, Sean D."/> <meta name="dc.creator" content="Vickery, Tammi L."/> <meta name="dc.creator" content="Wendl, Michael C."/> <meta name="dc.creator" content="Heath, Sharon"/> <meta name="dc.creator" content="Watson, Mark A."/> <meta name="dc.creator" content="Link, Daniel C."/> <meta name="dc.creator" content="Tomasson, Michael H."/> <meta name="dc.creator" content="Shannon, William D."/> <meta name="dc.creator" content="Payton, Jacqueline E."/> <meta name="dc.creator" content="Kulkarni, Shashikant"/> <meta name="dc.creator" content="Westervelt, Peter"/> <meta name="dc.creator" content="Walter, Matthew J."/> <meta name="dc.creator" content="Graubert, Timothy A."/> <meta name="dc.creator" content="Mardis, Elaine R."/> <meta name="dc.creator" content="Wilson, Richard K."/> <meta name="dc.creator" content="DiPersio, John F."/> <meta name="dc.subject" content="Acute myeloid leukaemia"/> <meta name="dc.subject" content="Medical research"/> <meta name="dc.subject" content="Mutation"/> <meta name="dc.subject" content="Sequencing"/> <meta name="citation_reference" content="citation_journal_title=Cancer Res.; citation_title=Evolution of karyotypes in acute nonlymphocytic leukemia; citation_author=JR Testa, U Mintz, JD Rowley, JW Vardiman, HM Golomb; citation_volume=39; citation_publication_date=1979; citation_pages=3619-3627; citation_id=CR1"/> <meta name="citation_reference" content="citation_journal_title=Cancer Genet. 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class="c-article-identifiers__item" data-test="article-category">Letter</li> <li class="c-article-identifiers__item"> <a href="https://www.springernature.com/gp/open-research/about/the-fundamentals-of-open-access-and-open-research" data-track="click" data-track-action="open access" data-track-label="link" class="u-color-open-access" data-test="open-access">Open access</a> </li> <li class="c-article-identifiers__item">Published: <time datetime="2012-01-11">11 January 2012</time></li> </ul> <h1 class="c-article-title" data-test="article-title" data-article-title="">Clonal evolution in relapsed acute myeloid leukaemia revealed by whole-genome sequencing</h1> <ul class="c-article-author-list c-article-author-list--long" data-test="authors-list" data-component-authors-activator="authors-list"><li class="c-article-author-list__item"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Li-Ding-Aff1-Aff2" 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Ley<svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-mail-medium"></use></svg></a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup><sup class="u-js-hide"> <a href="#na1">na1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-David_E_-Larson-Aff1" data-author-popup="auth-David_E_-Larson-Aff1" data-author-search="Larson, David E.">David E. Larson</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Christopher_A_-Miller-Aff1" data-author-popup="auth-Christopher_A_-Miller-Aff1" data-author-search="Miller, Christopher A.">Christopher A. Miller</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Daniel_C_-Koboldt-Aff1" data-author-popup="auth-Daniel_C_-Koboldt-Aff1" data-author-search="Koboldt, Daniel C.">Daniel C. 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Fulton</a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff2">2</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Ken-Chen-Aff1-Aff2" data-author-popup="auth-Ken-Chen-Aff1-Aff2" data-author-search="Chen, Ken">Ken Chen</a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff2">2</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Heather-Schmidt-Aff1" data-author-popup="auth-Heather-Schmidt-Aff1" data-author-search="Schmidt, Heather">Heather Schmidt</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Joelle-Kalicki_Veizer-Aff1" data-author-popup="auth-Joelle-Kalicki_Veizer-Aff1" data-author-search="Kalicki-Veizer, Joelle">Joelle Kalicki-Veizer</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Vincent_J_-Magrini-Aff1-Aff2" data-author-popup="auth-Vincent_J_-Magrini-Aff1-Aff2" data-author-search="Magrini, Vincent J.">Vincent J. Magrini</a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff2">2</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Lisa-Cook-Aff1" data-author-popup="auth-Lisa-Cook-Aff1" data-author-search="Cook, Lisa">Lisa Cook</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Sean_D_-McGrath-Aff1" data-author-popup="auth-Sean_D_-McGrath-Aff1" data-author-search="McGrath, Sean D.">Sean D. McGrath</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Tammi_L_-Vickery-Aff1" data-author-popup="auth-Tammi_L_-Vickery-Aff1" data-author-search="Vickery, Tammi L.">Tammi L. Vickery</a><sup class="u-js-hide"><a href="#Aff1">1</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Michael_C_-Wendl-Aff1-Aff2" data-author-popup="auth-Michael_C_-Wendl-Aff1-Aff2" data-author-search="Wendl, Michael C.">Michael C. 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Watson</a><sup class="u-js-hide"><a href="#Aff5">5</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Daniel_C_-Link-Aff3-Aff4" data-author-popup="auth-Daniel_C_-Link-Aff3-Aff4" data-author-search="Link, Daniel C.">Daniel C. Link</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Michael_H_-Tomasson-Aff3-Aff4" data-author-popup="auth-Michael_H_-Tomasson-Aff3-Aff4" data-author-search="Tomasson, Michael H.">Michael H. Tomasson</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-William_D_-Shannon-Aff6" data-author-popup="auth-William_D_-Shannon-Aff6" data-author-search="Shannon, William D.">William D. Shannon</a><sup class="u-js-hide"><a href="#Aff6">6</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Jacqueline_E_-Payton-Aff5" data-author-popup="auth-Jacqueline_E_-Payton-Aff5" data-author-search="Payton, Jacqueline E.">Jacqueline E. Payton</a><sup class="u-js-hide"><a href="#Aff5">5</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Shashikant-Kulkarni-Aff2-Aff4-Aff5" data-author-popup="auth-Shashikant-Kulkarni-Aff2-Aff4-Aff5" data-author-search="Kulkarni, Shashikant">Shashikant Kulkarni</a><sup class="u-js-hide"><a href="#Aff2">2</a>,<a href="#Aff4">4</a>,<a href="#Aff5">5</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Peter-Westervelt-Aff3-Aff4" data-author-popup="auth-Peter-Westervelt-Aff3-Aff4" data-author-search="Westervelt, Peter">Peter Westervelt</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Matthew_J_-Walter-Aff3-Aff4" data-author-popup="auth-Matthew_J_-Walter-Aff3-Aff4" data-author-search="Walter, Matthew J.">Matthew J. Walter</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Timothy_A_-Graubert-Aff3-Aff4" data-author-popup="auth-Timothy_A_-Graubert-Aff3-Aff4" data-author-search="Graubert, Timothy A.">Timothy A. Graubert</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Elaine_R_-Mardis-Aff1-Aff2-Aff4" data-author-popup="auth-Elaine_R_-Mardis-Aff1-Aff2-Aff4" data-author-search="Mardis, Elaine R.">Elaine R. Mardis</a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff2">2</a>,<a href="#Aff4">4</a></sup>, </li><li class="c-article-author-list__item c-article-author-list__item--hide c-article-author-list__item--hide-small-screen"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-Richard_K_-Wilson-Aff1-Aff2-Aff4" data-author-popup="auth-Richard_K_-Wilson-Aff1-Aff2-Aff4" data-author-search="Wilson, Richard K.">Richard K. Wilson</a><sup class="u-js-hide"><a href="#Aff1">1</a>,<a href="#Aff2">2</a>,<a href="#Aff4">4</a></sup> &amp; </li><li class="c-article-author-list__show-more" aria-label="Show all 39 authors for this article" title="Show all 39 authors for this article">…</li><li class="c-article-author-list__item"><a data-test="author-name" data-track="click" data-track-action="open author" data-track-label="link" href="#auth-John_F_-DiPersio-Aff3-Aff4" data-author-popup="auth-John_F_-DiPersio-Aff3-Aff4" data-author-search="DiPersio, John F.">John F. DiPersio</a><sup class="u-js-hide"><a href="#Aff3">3</a>,<a href="#Aff4">4</a></sup> </li></ul><button aria-expanded="false" class="c-article-author-list__button"><svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-chevron-down-medium"></use></svg><span>Show authors</span></button> <p class="c-article-info-details" data-container-section="info"> <a data-test="journal-link" href="/" data-track="click" data-track-action="journal homepage" data-track-category="article body" data-track-label="link"><i data-test="journal-title">Nature</i></a> <b data-test="journal-volume"><span class="u-visually-hidden">volume</span> 481</b>, <span class="u-visually-hidden">pages </span>506–510 (<span data-test="article-publication-year">2012</span>)<a href="#citeas" class="c-article-info-details__cite-as u-hide-print" data-track="click" data-track-action="cite this article" data-track-label="link">Cite this article</a> </p> <div class="c-article-metrics-bar__wrapper u-clear-both"> <ul class="c-article-metrics-bar u-list-reset"> <li class=" c-article-metrics-bar__item" data-test="access-count"> <p class="c-article-metrics-bar__count">69k <span class="c-article-metrics-bar__label">Accesses</span></p> </li> <li class="c-article-metrics-bar__item" data-test="citation-count"> <p class="c-article-metrics-bar__count">1581 <span class="c-article-metrics-bar__label">Citations</span></p> </li> <li class="c-article-metrics-bar__item" data-test="altmetric-score"> <p class="c-article-metrics-bar__count">103 <span class="c-article-metrics-bar__label">Altmetric</span></p> </li> <li class="c-article-metrics-bar__item"> <p class="c-article-metrics-bar__details"><a href="/articles/nature10738/metrics" data-track="click" data-track-action="view metrics" data-track-label="link" rel="nofollow">Metrics <span class="u-visually-hidden">details</span></a></p> </li> </ul> </div> </header> <div class="u-js-hide" data-component="article-subject-links"> <h3 class="c-article__sub-heading">Subjects</h3> <ul class="c-article-subject-list"> <li class="c-article-subject-list__subject"><a href="/subjects/acute-myeloid-leukaemia" data-track="click" data-track-action="view subject" data-track-label="link">Acute myeloid leukaemia</a></li><li class="c-article-subject-list__subject"><a href="/subjects/medical-research" data-track="click" data-track-action="view subject" data-track-label="link">Medical research</a></li><li class="c-article-subject-list__subject"><a href="/subjects/mutation" data-track="click" data-track-action="view subject" data-track-label="link">Mutation</a></li><li class="c-article-subject-list__subject"><a href="/subjects/sequencing" data-track="click" data-track-action="view subject" data-track-label="link">Sequencing</a></li> </ul> </div> </div> <div class="c-article-body"> <section aria-labelledby="Abs3" data-title="Abstract" lang="en"><div class="c-article-section" id="Abs3-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Abs3">Abstract</h2><div class="c-article-section__content" id="Abs3-content"><p>Most patients with acute myeloid leukaemia (AML) die from progressive disease after relapse, which is associated with clonal evolution at the cytogenetic level<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 1" title="Testa, J. R., Mintz, U., Rowley, J. D., Vardiman, J. W. &amp; Golomb, H. M. Evolution of karyotypes in acute nonlymphocytic leukemia. Cancer Res. 39, 3619–3627 (1979)" href="/articles/nature10738#ref-CR1" id="ref-link-section-d87548113e799">1</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 2" title="Garson, O. M. et al. Cytogenetic studies of 103 patients with acute myelogenous leukemia in relapse. Cancer Genet. Cytogenet. 40, 187–202 (1989)" href="/articles/nature10738#ref-CR2" id="ref-link-section-d87548113e802">2</a></sup> . To determine the mutational spectrum associated with relapse, we sequenced the primary tumour and relapse genomes from eight AML patients, and validated hundreds of somatic mutations using deep sequencing; this allowed us to define clonality and clonal evolution patterns precisely at relapse. In addition to discovering novel, recurrently mutated genes (for example, <i>WAC</i>, <i>SMC3</i>, <i>DIS3</i>, <i>DDX41</i> and <i>DAXX</i>) in AML, we also found two major clonal evolution patterns during AML relapse: (1) the founding clone in the primary tumour gained mutations and evolved into the relapse clone, or (2) a subclone of the founding clone survived initial therapy, gained additional mutations and expanded at relapse. In all cases, chemotherapy failed to eradicate the founding clone. The comparison of relapse-specific versus primary tumour mutations in all eight cases revealed an increase in transversions, probably due to DNA damage caused by cytotoxic chemotherapy. These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions.</p></div></div></section> <noscript> </noscript> <section aria-labelledby="inline-recommendations" data-title="Inline Recommendations" class="c-article-recommendations" data-track-component="inline-recommendations"> <h3 class="c-article-recommendations-title" id="inline-recommendations">Similar content being viewed by others</h3> <div class="c-article-recommendations-list"> <div class="c-article-recommendations-list__item"> <article class="c-article-recommendations-card" itemscope itemtype="http://schema.org/ScholarlyArticle"> <div class="c-article-recommendations-card__img"><img src="https://media.springernature.com/w215h120/springer-static/image/art%3A10.1038%2Fs41586-020-2864-x/MediaObjects/41586_2020_2864_Fig1_HTML.png" loading="lazy" alt=""></div> <div class="c-article-recommendations-card__main"> <h3 class="c-article-recommendations-card__heading" itemprop="name headline"> <a class="c-article-recommendations-card__link" itemprop="url" href="https://www.nature.com/articles/s41586-020-2864-x?fromPaywallRec=false" data-track="select_recommendations_1" data-track-context="inline recommendations" data-track-action="click recommendations inline - 1" data-track-label="10.1038/s41586-020-2864-x">Single-cell mutation analysis of clonal evolution in myeloid malignancies </a> </h3> <div class="c-article-meta-recommendations" data-test="recommendation-info"> <span class="c-article-meta-recommendations__item-type">Article</span> <span class="c-article-meta-recommendations__date">28 October 2020</span> </div> </div> </article> </div> <div class="c-article-recommendations-list__item"> <article class="c-article-recommendations-card" itemscope itemtype="http://schema.org/ScholarlyArticle"> <div class="c-article-recommendations-card__img"><img src="https://media.springernature.com/w215h120/springer-static/image/art%3A10.1038%2Fs41598-021-95109-0/MediaObjects/41598_2021_95109_Fig1_HTML.png" loading="lazy" alt=""></div> <div class="c-article-recommendations-card__main"> <h3 class="c-article-recommendations-card__heading" itemprop="name headline"> <a class="c-article-recommendations-card__link" itemprop="url" href="https://www.nature.com/articles/s41598-021-95109-0?fromPaywallRec=false" data-track="select_recommendations_2" data-track-context="inline recommendations" data-track-action="click recommendations inline - 2" data-track-label="10.1038/s41598-021-95109-0">Mutational patterns and clonal evolution from diagnosis to relapse in pediatric acute lymphoblastic leukemia </a> </h3> <div class="c-article-meta-recommendations" data-test="recommendation-info"> <span class="c-article-meta-recommendations__item-type">Article</span> <span class="c-article-meta-recommendations__access-type">Open access</span> <span class="c-article-meta-recommendations__date">06 August 2021</span> </div> </div> </article> </div> <div class="c-article-recommendations-list__item"> <article class="c-article-recommendations-card" itemscope itemtype="http://schema.org/ScholarlyArticle"> <div class="c-article-recommendations-card__img"><img src="https://media.springernature.com/w215h120/springer-static/image/art%3A10.1038%2Fs41467-020-19119-8/MediaObjects/41467_2020_19119_Fig1_HTML.png" loading="lazy" alt=""></div> <div class="c-article-recommendations-card__main"> <h3 class="c-article-recommendations-card__heading" itemprop="name headline"> <a class="c-article-recommendations-card__link" itemprop="url" href="https://www.nature.com/articles/s41467-020-19119-8?fromPaywallRec=false" data-track="select_recommendations_3" data-track-context="inline recommendations" data-track-action="click recommendations inline - 3" data-track-label="10.1038/s41467-020-19119-8">Clonal evolution of acute myeloid leukemia revealed by high-throughput single-cell genomics </a> </h3> <div class="c-article-meta-recommendations" data-test="recommendation-info"> <span class="c-article-meta-recommendations__item-type">Article</span> <span class="c-article-meta-recommendations__access-type">Open access</span> <span class="c-article-meta-recommendations__date">21 October 2020</span> </div> </div> </article> </div> </div> </section> <script> window.dataLayer = window.dataLayer || []; window.dataLayer.push({ recommendations: { recommender: 'semantic', model: 'specter', policy_id: 'NA', timestamp: 1732354700, embedded_user: 'null' } }); </script> <div class="main-content"> <section data-title="Main"><div class="c-article-section" id="Sec1-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Sec1">Main</h2><div class="c-article-section__content" id="Sec1-content"><p>To investigate the genetic changes associated with AML relapse, and to determine whether clonal evolution contributes to relapse, we performed whole-genome sequencing of primary tumour–relapse pairs and matched skin samples from eight patients, including unique patient identifier (UPN) 933124, whose primary tumour mutations were previously reported<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 3" title="Ley, T. J. et al. DNA sequencing of a cytogenetically normal acute myeloid leukaemia genome. Nature 456, 66–72 (2008)" href="/articles/nature10738#ref-CR3" id="ref-link-section-d87548113e854">3</a></sup>. Informed consent explicit for whole-genome sequencing was obtained for all patients on a protocol approved by the Washington University Medical School Institutional Review Board. We obtained &gt;25× haploid coverage and &gt;97% diploid coverage for each sample (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 1</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>). These patients were from five different French–American–British haematological subtypes, with elapsed times of 235–961 days between initial diagnosis and relapse (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 2a, b</a>).</p><p>Candidate somatic events in the primary tumour and relapse genomes were identified<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 4" title="Li, H. et al. The Sequence Alignment/Map format and SAMtools. Bioinformatics 25, 2078–2079 (2009)" href="/articles/nature10738#ref-CR4" id="ref-link-section-d87548113e870">4</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 5" title="Chen, K. et al. BreakDancer: an algorithm for high-resolution mapping of genomic structural variation. Nature Methods 6, 677–681 (2009)" href="/articles/nature10738#ref-CR5" id="ref-link-section-d87548113e873">5</a></sup> and selected for hybridization capture-based validation using methods described in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>. Deep sequencing of the captured target DNAs from skin (the matched normal tissue), primary tumour and relapse tumour specimens<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 6" title="Koboldt, D. C. et al. VarScan: variant detection in massively parallel sequencing of individual and pooled samples. Bioinformatics 25, 2283–2285 (2009)" href="/articles/nature10738#ref-CR6" id="ref-link-section-d87548113e880">6</a></sup> (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 3</a>) yielded a median of 590-fold coverage per site. The average number of mutations and structural variants was 539 (range 118–1,292) per case (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1a</a>).</p><div class="c-article-section__figure js-c-reading-companion-figures-item" data-test="figure" data-container-section="figure" id="figure-1" data-title=" Somatic mutations quantified by deep sequencing of capture validation targets in eight acute myeloid leukaemia primary tumour and relapse pairs. "><figure><figcaption><b id="Fig1" class="c-article-section__figure-caption" data-test="figure-caption-text">Figure 1: <b>Somatic mutations quantified by deep sequencing of capture validation targets in eight acute myeloid leukaemia primary tumour and relapse pairs.</b> </b></figcaption><div class="c-article-section__figure-content"><div class="c-article-section__figure-item"><a class="c-article-section__figure-link" data-test="img-link" data-track="click" data-track-label="image" data-track-action="view figure" href="/articles/nature10738/figures/1" rel="nofollow"><picture><source type="image/webp" srcset="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig1_HTML.jpg?as=webp"><img aria-describedby="Fig1" src="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig1_HTML.jpg" alt="figure 1" loading="lazy" width="685" height="549"></picture></a></div><div class="c-article-section__figure-description" data-test="bottom-caption" id="figure-1-desc"><p><b>a</b>, Summary of tier 1–3 mutations detected in eight cases (not including translocations). All mutations shown were validated using capture followed by deep sequencing. Shared mutations are in grey, primary tumour-specific mutations in blue and relapse-specific mutations in red. The total number of tier 1–3 mutations for each case is shown above the light-grey rectangle. <b>b</b>, Mutant allele frequency distribution of validated mutations from tier 1–3 in the primary tumour and relapse of case UPN 933124 (left). Mutant allele frequencies for five primary-tumour-specific mutations were obtained from a 454 deep read-count experiment. Four mutation clusters were identified in the primary tumour, and one was found at relapse. Five low-level mutations in both the primary tumour and relapse (including four residing in known copy number variable regions) were excluded from the clustering analysis. Non-synonymous mutations from genes that are recurrently mutated in AML are shown. The change of mutant allele frequencies for mutations from the five clusters is shown (right) between the primary tumour and relapse. The orange and red lines are superimposed. <b>c</b>, The mutation clusters detected in the primary tumour and relapse samples from seven additional AML patients. The relationship between clusters in the primary tumour and relapse samples are indicated by lines linking them.</p><p> <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM256">PowerPoint slide</a> </p></div></div><div class="u-text-right u-hide-print"><a class="c-article__pill-button" data-test="article-link" data-track="click" data-track-label="button" data-track-action="view figure" href="/articles/nature10738/figures/1" data-track-dest="link:Figure1 Full size image" aria-label="Full size image figure 1" rel="nofollow"><span>Full size image</span><svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-chevron-right-small"></use></svg></a></div></figure></div><p>The general approach for relapse analysis is exemplified by the first sequenced case (UPN 933124). A total of 413 somatic events from tiers 1 to 3 were validated (see ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 7" title="Mardis, E. R. et al. Recurring mutations found by sequencing an acute myeloid leukemia genome. N. Engl. J. Med. 361, 1058–1066 (2009)" href="/articles/nature10738#ref-CR7" id="ref-link-section-d87548113e931">7</a> for tier designations; <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 1a</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Tables 4a and 5</a>). Of these, 78 mutations were relapse-specific (63 point mutations, 1 dinucleotide mutation, 13 indels and 1 translocation; relapse-specific criteria described in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a> and shown in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 1b</a>), 5 point mutations were primary-tumour-specific, and 330 (317 point mutations and 13 indels) were shared between the primary tumour and relapse samples (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1a, b</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 2</a>). The skin sample was contaminated with leukaemic cells for this case (peripheral white blood cell count was 105,000 cells mm<sup>−3</sup> when the skin sample was banked), with an estimated tumour content in the skin sample of 29% (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>). In addition to the ten somatic non-synonymous mutations originally reported for the primary tumour sample<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 3" title="Ley, T. J. et al. DNA sequencing of a cytogenetically normal acute myeloid leukaemia genome. Nature 456, 66–72 (2008)" href="/articles/nature10738#ref-CR3" id="ref-link-section-d87548113e959">3</a></sup>, we identified one deletion that was not detected in the original analysis (<i>DNMT3A</i> L723fs (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 8" title="Ley, T. J. et al. DNMT3A mutations in acute myeloid leukemia. N. Engl. J. Med. 363, 2424–2433 (2010)" href="/articles/nature10738#ref-CR8" id="ref-link-section-d87548113e966">8</a>)) and three mis-sense mutations previously misclassified as germline events (<i>SMC3</i> G662C, <i>PDXDC1</i> E421K and <i>TTN</i> E14263K) (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1b</a>, <a data-track="click" data-track-label="link" data-track-action="table anchor" href="/articles/nature10738#Tab1">Table 1</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 4b</a>).</p><div class="c-article-table" data-test="inline-table" data-container-section="table" id="table-1"><figure><figcaption class="c-article-table__figcaption"><b id="Tab1" data-test="table-caption">Table 1 Coding mutations identified in eight primary tumour–relapse pairs</b></figcaption><div class="u-text-right u-hide-print"><a class="c-article__pill-button" data-test="table-link" data-track="click" data-track-action="view table" data-track-label="button" rel="nofollow" href="/articles/nature10738/tables/1" aria-label="Full size table 1"><span>Full size table</span><svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-chevron-right-small"></use></svg></a></div></figure></div><p>A total of 169 tier 1 coding mutations (approximately 21 per case) were identified in the eight patients (<a data-track="click" data-track-label="link" data-track-action="table anchor" href="/articles/nature10738#Tab1">Table 1</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Tables 4b and 6</a>), of which 19 were relapse-specific. In addition to mutations in known AML genes such as <i>DNMT3A</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 8" title="Ley, T. J. et al. DNMT3A mutations in acute myeloid leukemia. N. Engl. J. Med. 363, 2424–2433 (2010)" href="/articles/nature10738#ref-CR8" id="ref-link-section-d87548113e1402">8</a>), <i>FLT3</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 9" title="Nakao, M. et al. Internal tandem duplication of the flt3 gene found in acute myeloid leukemia. Leukemia 10, 1911–1918 (1996)" href="/articles/nature10738#ref-CR9" id="ref-link-section-d87548113e1409">9</a>), <i>NPM1</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 10" title="Falini, B. et al. Cytoplasmic nucleophosmin in acute myelogenous leukemia with a normal karyotype. N. Engl. J. Med. 352, 254–266 (2005)" href="/articles/nature10738#ref-CR10" id="ref-link-section-d87548113e1415">10</a>), <i>IDH1</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 7" title="Mardis, E. R. et al. Recurring mutations found by sequencing an acute myeloid leukemia genome. N. Engl. J. Med. 361, 1058–1066 (2009)" href="/articles/nature10738#ref-CR7" id="ref-link-section-d87548113e1421">7</a>), <i>IDH2</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 11" title="Ward, P. S. et al. The common feature of leukemia-associated IDH1 and IDH2 mutations is a neomorphic enzyme activity converting alpha-ketoglutarate to 2-hydroxyglutarate. Cancer Cell 17, 225–234 (2010)" href="/articles/nature10738#ref-CR11" id="ref-link-section-d87548113e1428">11</a>), <i>WT1</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 12" title="King-Underwood, L., Renshaw, J. &amp; Pritchard-Jones, K. Mutations in the Wilms’ tumor gene WT1 in leukemias. Blood 87, 2171–2179 (1996)" href="/articles/nature10738#ref-CR12" id="ref-link-section-d87548113e1434">12</a>), <i>RUNX1</i> (refs <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 13" title="Gao, J. et al. Isolation of a yeast artificial chromosome spanning the 8;21 translocation breakpoint t(8;21)(q22;q22.3) in acute myelogenous leukemia. Proc. Natl Acad. Sci. USA 88, 4882–4886 (1991)" href="/articles/nature10738#ref-CR13" id="ref-link-section-d87548113e1440">13</a>, <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 14" title="Kirito, K. et al. A novel RUNX1 mutation in familial platelet disorder with propensity to develop myeloid malignancies. Haematologica 93, 155–156 (2008)" href="/articles/nature10738#ref-CR14" id="ref-link-section-d87548113e1443">14</a>), <i>PTPRT</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 3" title="Ley, T. J. et al. DNA sequencing of a cytogenetically normal acute myeloid leukaemia genome. Nature 456, 66–72 (2008)" href="/articles/nature10738#ref-CR3" id="ref-link-section-d87548113e1450">3</a>), <i>PHF6</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 15" title="Van Vlierberghe, P. et al. PHF6 mutations in adult acute myeloid leukemia. Leukemia 25, 130–134 (2011)" href="/articles/nature10738#ref-CR15" id="ref-link-section-d87548113e1456">15</a>) and <i>ETV6</i> (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 16" title="Barjesteh van Waalwijk van Doorn-Khosrovani, S. et al. Somatic heterozygous mutations in ETV6 (TEL) and frequent absence of ETV6 protein in acute myeloid leukemia. Oncogene 24, 4129–4137 (2005)" href="/articles/nature10738#ref-CR16" id="ref-link-section-d87548113e1462">16</a>) in these eight patients, we also discovered novel, recurring mutations in <i>WAC</i>, <i>SMC3</i>, <i>DIS3</i>, <i>DDX41</i> and <i>DAXX</i> using 200 AML cases whose exomes were sequenced as part of the Cancer Genome Atlas AML project (<a data-track="click" data-track-label="link" data-track-action="table anchor" href="/articles/nature10738#Tab1">Table 1</a>, <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 4b</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 3</a>; T.J.L., R.K.W. and The Cancer Genome Atlas working group on AML, unpublished data). Details regarding the novel, recurrently mutated genes are provided in <a data-track="click" data-track-label="link" data-track-action="table anchor" href="/articles/nature10738#Tab1">Table 1</a>, <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Tables 4b and 7</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Figs 3 and 4</a>. Structural and functional analyses of structural variants are presented in the <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a> (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Figs 5–10</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Tables 2, 8 and 9</a>).</p><p>The generation of high-depth sequencing data allowed us to quantify accurately mutant allele frequencies in all cases, permitting estimation of the size of tumour clonal populations in each AML sample. On the basis of mutation clustering results, we inferred the identity of four clones having distinct sets of mutations (clusters) in the primary tumour of AML1/UPN 933124 (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>). The median mutant allele frequencies in the primary tumour for clusters 1 to 4 were 46.86%, 24.89%, 16.00% and 2.39%, respectively (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1b</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 5c</a>). Clone 1 is the ‘founding’ clone (that is, the other subclones are derived from it), containing the cluster 1 mutations; assuming that nearly all of these mutations are heterozygous, they must be present in virtually all the tumour cells at presentation and at relapse, as the variant frequency of these mutations is <span class="stix">∼</span>40–50%. Clone 2 (with cluster 2 mutations) and clone 3 (with cluster 3 mutations) must be derived from clone 1, because virtually all the cells in the sample contain the cluster 1 mutations (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig2">Fig. 2a</a>). It is likely that a single cell from clone 3 gained a set of mutations (cluster 4) to form clone 4: these survived chemotherapy and evolved to become the dominant clone at relapse. We do not know whether any of the cluster 4 mutations conferred chemotherapy resistance; although none had translational consequences, we cannot rule out a relevant regulatory mutation in this cluster.</p><div class="c-article-section__figure js-c-reading-companion-figures-item" data-test="figure" data-container-section="figure" id="figure-2" data-title=" Graphical representation of clonal evolution from the primary tumour to relapse in UPN 933124, and patterns of tumour evolution observed in eight primary tumour and relapse pairs. "><figure><figcaption><b id="Fig2" class="c-article-section__figure-caption" data-test="figure-caption-text">Figure 2: <b>Graphical representation of clonal evolution from the primary tumour to relapse in UPN 933124, and patterns of tumour evolution observed in eight primary tumour and relapse pairs.</b> </b></figcaption><div class="c-article-section__figure-content"><div class="c-article-section__figure-item"><a class="c-article-section__figure-link" data-test="img-link" data-track="click" data-track-label="image" data-track-action="view figure" href="/articles/nature10738/figures/2" rel="nofollow"><picture><source type="image/webp" srcset="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig2_HTML.jpg?as=webp"><img aria-describedby="Fig2" src="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig2_HTML.jpg" alt="figure 2" loading="lazy" width="685" height="643"></picture></a></div><div class="c-article-section__figure-description" data-test="bottom-caption" id="figure-2-desc"><p><b>a</b>, The founding clone in the primary tumour in UPN 933124 contained somatic mutations in <i>DNMT3A</i>, <i>NPM1</i>, <i>PTPRT</i>, <i>SMC3</i> and <i>FLT3</i> that are all recurrent in AML and probably relevant for pathogenesis; one subclone within the founding clone evolved to become the dominant clone at relapse by acquiring additional mutations, including recurrent mutations in <i>ETV6</i> and <i>MYO18B</i>, and a <i>WNK1</i>-<i>WAC</i> fusion gene. HSC, haematopoietic stem cell. <b>b</b>, Examples of the two major patterns of tumour evolution in AML. Model 1 shows the dominant clone in the primary tumour evolving into the relapse clone by gaining relapse-specific mutations; this pattern was identified in three primary tumour and relapse pairs (UPN 804168, UPN 573988 and UPN 400220). Model 2 shows a minor clone carrying the vast majority of the primary tumour mutations survived and expanded at relapse. This pattern was observed in five primary tumour and relapse pairs (UPN 933124, UPN 452198, UPN 758168, UPN 426980 and UPN 869586).</p><p> <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM257">PowerPoint slide</a> </p></div></div><div class="u-text-right u-hide-print"><a class="c-article__pill-button" data-test="article-link" data-track="click" data-track-label="button" data-track-action="view figure" href="/articles/nature10738/figures/2" data-track-dest="link:Figure2 Full size image" aria-label="Full size image figure 2" rel="nofollow"><span>Full size image</span><svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-chevron-right-small"></use></svg></a></div></figure></div><p>Assuming that all the mutations detected are heterozygous in the primary tumour sample (with a malignant cellular content at 93.72% for the primary bone marrow sample, see <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>), we were able to calculate the fraction of total malignant cells in each clone. Clone 1 is the founding clone; 12.74% of the tumour cells contain only this set of mutations. Clones 2, 3 and 4 evolved from clone 1. The additional mutations in clones 2 and 3 may have provided a growth or survival advantage, as 53.12% and 29.04% of the tumour cells belonged to these clones, respectively. Only 5.10% of the tumour cells were from clone 4, indicating that it may have arisen last (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig2">Fig. 2a</a>). However, the relapse clone evolved from clone 4. A single clone containing all of the cluster 5 mutations was detected in the relapse sample; clone 5 evolved from clone 4, but gained 78 new somatic alterations after sampling at day 170. As all mutations in clone 5 appear to be present in all relapse tumour cells, we suspect that one or more of the mutations in this clone provided a strong selective advantage that contributed to relapse. The <i>ETV6</i> mutation, the <i>MYO18B</i> mutation, and/or the <i>WNK1</i>-<i>WAC</i> fusion are the most likely candidates, as <i>ETV6</i>, <i>MYO18B</i> and <i>WAC</i> are recurrently mutated in AML.</p><p>We evaluated the mutation clusters in the seven additional primary tumour–relapse pairs by assessing peaks of allele frequency using kernel density estimation (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 11</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>). We thus inferred the numbers and malignant fractions of clones in each primary tumour and relapse sample. Similar to UPN 933124, multiple mutation clusters (2–4) were present in each of the primary tumours from four patients (UPN 869586, UPN 426980, UPN 452198 and UPN 758168). However, only one major cluster was detected in each of the primary tumours from the three other patients (UPN 804168, UPN 573988 and UPN 400220) (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1c</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 10</a>). Importantly, all eight patients gained relapse-specific mutations, although the number of clusters in the relapse samples varied (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1</a>).</p><p>Two major patterns of clonal evolution were detected at relapse (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig2">Fig. 2b</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 3</a>): in cases with pattern 1, the dominant clone in the primary tumour gained additional mutations and evolved into the relapse clone (UPN 804168, UPN 573988 and UPN 400220). These patients may simply be inadequately treated (for example, elderly patients who cannot tolerate aggressive consolidation, like UPN 573988), or they may have mutations in their founding clones (or germline variants) that make these cells more resistant to therapy (UPN 804168 and UPN 400220). In patients with pattern 2, a minor subclone carrying the vast majority (but not all) of the primary tumour mutations survived, gained mutations, and expanded at relapse; a subset of primary tumour mutations was often eradicated by therapy, and were not detected at relapse (UPN 758168, UPN 933124, UPN 452198, UPN 426980 and UPN 869586). Specific mutations in a key subclone may contribute to chemotherapy resistance, or the mutations important for relapse may be acquired during tumour evolution, or both. Notably, in cases 426980 and 758168, a second primary tumour clone survived chemotherapy and was also present at relapse (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Fig. 1c</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 3</a>). Owing to current technical limits in our ability to detect mutations in rare cells (mostly related to currently achievable levels of coverage with whole genome sequencing), our models represent a minimal estimate of the clonal heterogeneity in AML.</p><p>All eight patients received cytarabine and anthracycline for induction therapy, and additional cytotoxic chemotherapy for consolidation; treatment histories are summarized in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 2</a> and described in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>. To investigate the potential impact of treatment on relapse mutation types, we compared the six classes of transition and transversion mutations in the primary tumour with the relapse-specific mutations in all eight patients (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig3">Fig. 3a</a>). Although C•G→T•;A transitions are the most common mutations found in both primary and relapse AML genomes, their frequencies are significantly different between the primary tumour mutations (51.1%) and relapse-specific mutations (40.5%) (<i>P</i> = 2.99 × 10<sup>−7</sup>). Moreover, we observed an average of 4.5%, 5.3% and 4.2% increase in A•T→C•G (<i>P</i> = 9.13 ×10<sup>−7</sup>), C•G→A•T (<i>P</i> = 0.00312) and C•G→G•C (<i>P</i> = 0.00366) transversions, respectively, in relapse-specific mutations. Notably, an increased A•T→C•G transversion rate has also been observed in cases of chronic lymphocytic leukaemia with mutated immunoglobulin genes<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 17" title="Puente, X. S. et al. Whole-genome sequencing identifies recurrent mutations in chronic lymphocytic leukaemia. Nature 475, 101–105 (2011)" href="/articles/nature10738#ref-CR17" id="ref-link-section-d87548113e1683">17</a></sup>. C•G→A•T transversions are the most common mutation in lung cancer patients who were exposed to tobacco-borne carcinogens<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 18" title="Ding, L. et al. Somatic mutations affect key pathways in lung adenocarcinoma. Nature 455, 1069–1075 (2008)" href="/articles/nature10738#ref-CR18" id="ref-link-section-d87548113e1687">18</a></sup> (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig3">Fig. 3b</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Table 11</a>). We examined the 456 relapse-specific mutations and 3,590 primary tumour point mutations from all eight cases as a group, and found that the transversion frequency is significantly higher for relapse-specific mutations (46%) than for primary tumour mutations (30.7%) (<i>P</i> = 3.71 × 10<sup>−11</sup>), indicating that chemotherapy has a substantial effect on the mutational spectrum at relapse. Similar results were obtained when we limited the analysis to the 213 mutations that had 0% variant frequency in the primary tumour samples (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 1b</a>); the transversion frequency for relapse-specific mutations was 50.4%, versus 31.4% for primary tumour samples (<i>P</i> = 3.89 × 10<sup>−9</sup>). Very few copy-number alterations were detected in the eight relapse samples, suggesting that the increased transversion rate is not associated with generalized genomic instability (<a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 12</a>).</p><div class="c-article-section__figure js-c-reading-companion-figures-item" data-test="figure" data-container-section="figure" id="figure-3" data-title=" Comparison of mutational classes between primary tumours and relapse samples. "><figure><figcaption><b id="Fig3" class="c-article-section__figure-caption" data-test="figure-caption-text">Figure 3: <b>Comparison of mutational classes between primary tumours and relapse samples.</b> </b></figcaption><div class="c-article-section__figure-content"><div class="c-article-section__figure-item"><a class="c-article-section__figure-link" data-test="img-link" data-track="click" data-track-label="image" data-track-action="view figure" href="/articles/nature10738/figures/3" rel="nofollow"><picture><source type="image/webp" srcset="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig3_HTML.jpg?as=webp"><img aria-describedby="Fig3" src="//media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_Article_BFnature10738_Fig3_HTML.jpg" alt="figure 3" loading="lazy" width="685" height="470"></picture></a></div><div class="c-article-section__figure-description" data-test="bottom-caption" id="figure-3-desc"><p><b>a</b>, Fraction of the primary tumour and relapse-specific mutations in each of the transition and transversion categories. <b>b</b>, Transversion frequencies of the primary tumour and relapse-specific mutations from eight AML tumour and relapse pairs. 456 relapse-specific mutations and 3,590 primary tumour mutations from eight cases were used for assessing statistical significance using proportion tests.</p><p> <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM258">PowerPoint slide</a> </p></div></div><div class="u-text-right u-hide-print"><a class="c-article__pill-button" data-test="article-link" data-track="click" data-track-label="button" data-track-action="view figure" href="/articles/nature10738/figures/3" data-track-dest="link:Figure3 Full size image" aria-label="Full size image figure 3" rel="nofollow"><span>Full size image</span><svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-chevron-right-small"></use></svg></a></div></figure></div><p>We first described the use of deep sequencing to define precisely the variant allele frequencies of the mutations in the AML genome of case 933124 (ref. <a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 3" title="Ley, T. J. et al. DNA sequencing of a cytogenetically normal acute myeloid leukaemia genome. Nature 456, 66–72 (2008)" href="/articles/nature10738#ref-CR3" id="ref-link-section-d87548113e1752">3</a>), and here have refined and extended this technique to examine clonal evolution at relapse. The analysis of eight primary AML and relapse pairs has revealed unequivocal evidence for a common origin of tumour subpopulations; a dominant mutation cluster representing the founding clone was discovered in the primary tumour sample in all cases. The relationship of the founding clone (and subclones thereof) to the ‘leukaemia initiating cell’ is not yet clear—purification of clonal populations and functional testing would be required to establish this relationship. We observed the loss of primary tumour subclones at relapse in four of eight cases, suggesting that some subclones are indeed eradicated by therapy (<a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig1">Figs 1</a> and <a data-track="click" data-track-label="link" data-track-action="figure anchor" href="/articles/nature10738#Fig2">2</a> and <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Fig. 3</a>). Some mutations gained at relapse may alter the growth properties of AML cells, or confer resistance to additional chemotherapy. Regardless, each tumour displayed clear evidence of clonal evolution at relapse and a higher frequency of transversions that were probably induced by DNA damage from chemotherapy. Although chemotherapy is required to induce initial remissions in AML patients, our data also raise the possibility that it contributes to relapse by generating new mutations in the founding clone or one of its subclones, which then can undergo selection and clonal expansion. These data demonstrate the critical need to identify the disease-causing mutations for AML, so that targeted therapies can be developed that avoid the use of cytotoxic drugs, many of which are mutagens.</p><p>This study extends the findings of previous studies<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 19" title="Mullighan, C. G. et al. Genomic analysis of the clonal origins of relapsed acute lymphoblastic leukemia. Science 322, 1377–1380 (2008)" href="/articles/nature10738#ref-CR19" id="ref-link-section-d87548113e1769">19</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 20" title="Anderson, K. et al. Genetic variegation of clonal architecture and propagating cells in leukaemia. Nature 469, 356–361 (2011)" href="/articles/nature10738#ref-CR20" id="ref-link-section-d87548113e1772">20</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 21" title="Notta, F. et al. Evolution of human BCR-ABL1 lymphoblastic leukaemia-initiating cells. Nature 469, 362–367 (2011)" href="/articles/nature10738#ref-CR21" id="ref-link-section-d87548113e1775">21</a></sup>, which recently described patterns of clonal evolution in ALL patients using fluorescence <i>in situ</i> hybridization and/or copy number alterations detected by SNP arrays, and it enhances the understanding of genetic changes acquired during disease progression, as previously described for breast and pancreatic cancer metastases<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 22" title="Ding, L. et al. Genome remodelling in a basal-like breast cancer metastasis and xenograft. Nature 464, 999–1005 (2010)" href="/articles/nature10738#ref-CR22" id="ref-link-section-d87548113e1782">22</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 23" title="Shah, S. P. et al. Mutational evolution in a lobular breast tumour profiled at single nucleotide resolution. Nature 461, 809–813 (2009)" href="/articles/nature10738#ref-CR23" id="ref-link-section-d87548113e1785">23</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 24" title="Yachida, S. et al. Distant metastasis occurs late during the genetic evolution of pancreatic cancer. Nature 467, 1114–1117 (2010)" href="/articles/nature10738#ref-CR24" id="ref-link-section-d87548113e1788">24</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 25" title="Navin, N. et al. Tumour evolution inferred by single-cell sequencing. Nature 472, 90–94 (2011)" href="/articles/nature10738#ref-CR25" id="ref-link-section-d87548113e1791">25</a></sup>. Our data provide complementary information on clonal evolution in AML, using a much larger set of mutations that were quantified with deep sequencing; this provides an unprecedented number of events that can be used to define precisely clonal size and mutational evolution at relapse. Both ALL and AML share common features of clonal heterogeneity at presentation followed by dynamic clonal evolution at relapse, including the addition of new mutations that may be relevant for relapse pathogenesis. Clonal evolution can also occur after allogeneic transplantation (for example, loss of mismatched HLA alleles via a uniparental disomy mechanism), demonstrating that the type of therapy itself can affect clonal evolution at relapse<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 26" title="Vago, L. et al. Loss of mismatched HLA in leukemia after stem-cell transplantation. N. Engl. J. Med. 361, 478–488 (2009)" href="/articles/nature10738#ref-CR26" id="ref-link-section-d87548113e1795">26</a>,<a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 27" title="Villalobos, I. B. et al. Relapse of leukemia with loss of mismatched HLA resulting from uniparental disomy after haploidentical hematopoietic stem cell transplantation. Blood 115, 3158–3161 (2010)" href="/articles/nature10738#ref-CR27" id="ref-link-section-d87548113e1798">27</a></sup>. Taken together, these data demonstrate that AML cells routinely acquire a small number of additional mutations at relapse, and suggest that some of these mutations may contribute to clonal selection and chemotherapy resistance. The AML genome in an individual patient is clearly a ‘moving target’; eradication of the founding clone and all of its subclones will be required to achieve cures.</p></div></div></section><section data-title="Methods Summary"><div class="c-article-section" id="Sec2-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Sec2">Methods Summary</h2><div class="c-article-section__content" id="Sec2-content"><p>Illumina paired-end reads were aligned to NCBI build36 using BWA 0.5.5 (<a href="http://sourceforge.net/projects/bio-bwa/">http://sourceforge.net/projects/bio-bwa/</a>). Somatic mutations were identified using SomaticSniper<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 28" title="Larson, D. E. et al. SomaticSniper: identification of somatic point mutations in whole genome sequencing data. Bioinformatics (in the press)" href="/articles/nature10738#ref-CR28" id="ref-link-section-d87548113e1817">28</a></sup> and a modified version of the SAMtools indel caller. Structural variations were identified using BreakDancer<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 5" title="Chen, K. et al. BreakDancer: an algorithm for high-resolution mapping of genomic structural variation. Nature Methods 6, 677–681 (2009)" href="/articles/nature10738#ref-CR5" id="ref-link-section-d87548113e1821">5</a></sup>. All predicted non-repetitive somatic SNVs, indels and all structural variants were included on custom sequence capture arrays from Roche Nimblegen. Illumina 2 × 100-bp paired-end sequencing reads were produced after elution from capture arrays. VarScan<sup><a data-track="click" data-track-action="reference anchor" data-track-label="link" data-test="citation-ref" aria-label="Reference 6" title="Koboldt, D. C. et al. VarScan: variant detection in massively parallel sequencing of individual and pooled samples. Bioinformatics 25, 2283–2285 (2009)" href="/articles/nature10738#ref-CR6" id="ref-link-section-d87548113e1825">6</a></sup> and a read remapping strategy using Crossmatch (P. Green, unpublished data) and BWA were used for determining the validation status of predicted SNVs, indels and structural variants. A complete description of the materials and methods is provided in <a data-track="click" data-track-label="link" data-track-action="supplementary material anchor" href="/articles/nature10738#MOESM259">Supplementary Information</a>. All sequence variants for the AML tumour samples from eight cases have been submitted to dbGaP (accession number phs000159.v4.p2).</p></div></div></section> </div> <div> <section data-title="Accession codes"><div class="c-article-section" id="accession-codes-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="accession-codes">Accession codes</h2><div class="c-article-section__content" id="accession-codes-content"> <h3 class="c-article__sub-heading">Data deposits</h3> <p>All sequence variants for the AML tumour samples from eight cases have been submitted to dbGaP under accession number phs000159.v4.p2.</p> </div></div></section><div id="MagazineFulltextArticleBodySuffix"><section aria-labelledby="Bib1" data-title="References"><div class="c-article-section" id="Bib1-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Bib1">References</h2><div class="c-article-section__content" id="Bib1-content"><div data-container-section="references"><ol class="c-article-references" data-track-component="outbound reference" data-track-context="references section"><li class="c-article-references__item js-c-reading-companion-references-item" data-counter="1"><p class="c-article-references__text" id="ref-CR1">Testa, J. 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SomaticSniper: identification of somatic point mutations in whole genome sequencing data. <i>Bioinformatics</i> (in the press)</p></li></ol><p class="c-article-references__download u-hide-print"><a data-track="click" data-track-action="download citation references" data-track-label="link" rel="nofollow" href="https://citation-needed.springer.com/v2/references/10.1038/nature10738?format=refman&amp;flavour=references">Download references<svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-eds-i-download-medium"></use></svg></a></p></div></div></div></section></div><section data-title="Acknowledgements"><div class="c-article-section" id="Ack1-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Ack1">Acknowledgements</h2><div class="c-article-section__content" id="Ack1-content"><p>We thank the Analysis Pipeline group for developing the automated sequence analysis pipelines; the LIMS group for developing tools and software to manage samples and sequencing; the Systems group for providing the IT infrastructure and HPC solutions required for sequencing and analysis; and R. T. Demeter for experimental support. We also thank The Cancer Genome Atlas for allowing us to use unpublished data for this study, and the Washington University Cancer Genome Initiative for their support. This work was funded by grants to R.K.W. and the National Human Genome Research Institute (NHGRI U54 HG003079), and grants to T.J.L. from the National Cancer Institute (PO1 CA101937) and the Barnes-Jewish Hospital Foundation (00335-0505-02).</p></div></div></section><section aria-labelledby="author-information" data-title="Author information"><div class="c-article-section" id="author-information-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="author-information">Author information</h2><div class="c-article-section__content" id="author-information-content"><span class="c-article-author-information__subtitle u-visually-hidden" id="author-notes">Author notes</span><ol class="c-article-author-information__list"><li class="c-article-author-information__item" id="na1"><p>Li Ding and Timothy J. Ley: These authors contributed equally to this work.</p></li></ol><h3 class="c-article__sub-heading" id="affiliations">Authors and Affiliations</h3><ol class="c-article-author-affiliation__list"><li id="Aff1"><p class="c-article-author-affiliation__address">The Genome Institute, Washington University, St Louis, 63108, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">Li Ding, Timothy J. Ley, David E. Larson, Christopher A. Miller, Daniel C. Koboldt, Michael D. McLellan, Joshua F. McMichael, John W. Wallis, Charles Lu, Dong Shen, Christopher C. Harris, David J. Dooling, Robert S. Fulton, Lucinda L. Fulton, Ken Chen, Heather Schmidt, Joelle Kalicki-Veizer, Vincent J. Magrini, Lisa Cook, Sean D. McGrath, Tammi L. Vickery, Michael C. Wendl, Elaine R. Mardis &amp; Richard K. Wilson</p></li><li id="Aff2"><p class="c-article-author-affiliation__address">Department of Genetics, Washington University, St Louis, 63110, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">Li Ding, John W. Wallis, David J. Dooling, Robert S. Fulton, Lucinda L. Fulton, Ken Chen, Vincent J. Magrini, Michael C. Wendl, Shashikant Kulkarni, Elaine R. Mardis &amp; Richard K. Wilson</p></li><li id="Aff3"><p class="c-article-author-affiliation__address">Department of Internal Medicine, Division of Oncology, Washington University, St Louis, 63110, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">Timothy J. Ley, John S. Welch, Julie K. Ritchey, Margaret A. Young, Tamara Lamprecht, Sharon Heath, Daniel C. Link, Michael H. Tomasson, Peter Westervelt, Matthew J. Walter, Timothy A. Graubert &amp; John F. DiPersio</p></li><li id="Aff4"><p class="c-article-author-affiliation__address">Siteman Cancer Center, Washington University, St Louis, 63110, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">Timothy J. Ley, Daniel C. Link, Michael H. Tomasson, Shashikant Kulkarni, Peter Westervelt, Matthew J. Walter, Timothy A. Graubert, Elaine R. Mardis, Richard K. Wilson &amp; John F. DiPersio</p></li><li id="Aff5"><p class="c-article-author-affiliation__address">Department of Pathology and Immunology, Washington University, St Louis, 63110, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">Mark A. Watson, Jacqueline E. Payton &amp; Shashikant Kulkarni</p></li><li id="Aff6"><p class="c-article-author-affiliation__address">Division of Biostatistics, Washington University, St Louis, 63110, Missouri, USA</p><p class="c-article-author-affiliation__authors-list">William D. Shannon</p></li></ol><div class="u-js-hide u-hide-print" data-test="author-info"><span class="c-article__sub-heading">Authors</span><ol class="c-article-authors-search u-list-reset"><li id="auth-Li-Ding-Aff1-Aff2"><span class="c-article-authors-search__title u-h3 js-search-name">Li Ding</span><div class="c-article-authors-search__list"><div class="c-article-authors-search__item c-article-authors-search__list-item--left"><a href="/search?author=Li%20Ding" class="c-article-button" data-track="click" data-track-action="author link - publication" data-track-label="link" rel="nofollow">View author publications</a></div><div class="c-article-authors-search__item c-article-authors-search__list-item--right"><p class="search-in-title-js c-article-authors-search__text">You can also search for this author in <span class="c-article-identifiers"><a class="c-article-identifiers__item" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=search&amp;term=Li%20Ding" data-track="click" data-track-action="author link - pubmed" data-track-label="link" rel="nofollow">PubMed</a><span class="u-hide"> </span><a class="c-article-identifiers__item" href="http://scholar.google.co.uk/scholar?as_q=&amp;num=10&amp;btnG=Search+Scholar&amp;as_epq=&amp;as_oq=&amp;as_eq=&amp;as_occt=any&amp;as_sauthors=%22Li%20Ding%22&amp;as_publication=&amp;as_ylo=&amp;as_yhi=&amp;as_allsubj=all&amp;hl=en" data-track="click" data-track-action="author link - scholar" data-track-label="link" rel="nofollow">Google Scholar</a></span></p></div></div></li><li id="auth-Timothy_J_-Ley-Aff1-Aff3-Aff4"><span class="c-article-authors-search__title u-h3 js-search-name">Timothy J. 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DiPersio</span><div class="c-article-authors-search__list"><div class="c-article-authors-search__item c-article-authors-search__list-item--left"><a href="/search?author=John%20F.%20DiPersio" class="c-article-button" data-track="click" data-track-action="author link - publication" data-track-label="link" rel="nofollow">View author publications</a></div><div class="c-article-authors-search__item c-article-authors-search__list-item--right"><p class="search-in-title-js c-article-authors-search__text">You can also search for this author in <span class="c-article-identifiers"><a class="c-article-identifiers__item" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=search&amp;term=John%20F.%20DiPersio" data-track="click" data-track-action="author link - pubmed" data-track-label="link" rel="nofollow">PubMed</a><span class="u-hide"> </span><a class="c-article-identifiers__item" href="http://scholar.google.co.uk/scholar?as_q=&amp;num=10&amp;btnG=Search+Scholar&amp;as_epq=&amp;as_oq=&amp;as_eq=&amp;as_occt=any&amp;as_sauthors=%22John%20F.%20DiPersio%22&amp;as_publication=&amp;as_ylo=&amp;as_yhi=&amp;as_allsubj=all&amp;hl=en" data-track="click" data-track-action="author link - scholar" data-track-label="link" rel="nofollow">Google Scholar</a></span></p></div></div></li></ol></div><h3 class="c-article__sub-heading" id="contributions">Contributions</h3><p>T.J.L., L.D., J.F.D., E.R.M. and R.K.W. designed the experiments. L.D. and T.J.L. led data analysis. L.D., D.E.L., C.A.M., D.C.K., J.S.W., M.D.M., J.W.W., C.L., D.S., C.C.H., K.C., H.S., J.K.-V., M.C.W., M.A.W., W.D.S., J.E.P. and S.K. performed data analysis. J.F.M., M.D.M. and L.D. prepared figures and tables. J.S.W., J.K.R., M.A.Y., T.L., R.S.F., L.L.F., V.J.M., L.S., L.C., S.D.M. and T.L.V. performed laboratory experiments. S.H. and P.W. provided samples and clinical data. D.J.D. provided informatics support. T.J.L., D.C.L., M.H.T., E.R.M., R.K.W. and J.F.D. developed project concept. L.D., T.J.L., M.J.W., T.A.G. and J.F.D. wrote the manuscript.</p><h3 class="c-article__sub-heading" id="corresponding-author">Corresponding author</h3><p id="corresponding-author-list">Correspondence to <a id="corresp-c1" href="mailto:timley@wustl.edu">Timothy J. Ley</a>.</p></div></div></section><section data-title="Ethics declarations"><div class="c-article-section" id="ethics-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="ethics">Ethics declarations</h2><div class="c-article-section__content" id="ethics-content"> <h3 class="c-article__sub-heading">Competing interests</h3> <p>The authors declare no competing financial interests.</p> </div></div></section><section data-title="Supplementary information"><div class="c-article-section" id="Sec3-section"><h2 class="c-article-section__title js-section-title js-c-reading-companion-sections-item" id="Sec3">Supplementary information</h2><div class="c-article-section__content" id="Sec3-content"><div data-test="supplementary-info"><div id="figshareContainer" class="c-article-figshare-container" data-test="figshare-container"></div><div class="c-article-supplementary__item" data-test="supp-item" id="MOESM259"><h3 class="c-article-supplementary__title u-h3"><a class="print-link" data-track="click" data-track-action="view supplementary info" data-test="supp-info-link" data-track-label="supplementary information" href="https://static-content.springer.com/esm/art%3A10.1038%2Fnature10738/MediaObjects/41586_2012_BFnature10738_MOESM259_ESM.pdf" data-supp-info-image="">Supplementary Information</a></h3><div class="c-article-supplementary__description" data-component="thumbnail-container"><p>The file contains Supplementary Materials and Methods, Supplementary Figures 1-12 with legends, Supplementary Tables 1-12 and additional references. 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class="c-article-section__content" id="article-info-content"><div class="c-bibliographic-information"><div class="c-bibliographic-information__column"><h3 class="c-article__sub-heading" id="citeas">Cite this article</h3><p class="c-bibliographic-information__citation">Ding, L., Ley, T., Larson, D. <i>et al.</i> Clonal evolution in relapsed acute myeloid leukaemia revealed by whole-genome sequencing. <i>Nature</i> <b>481</b>, 506–510 (2012). https://doi.org/10.1038/nature10738</p><p class="c-bibliographic-information__download-citation u-hide-print"><a data-test="citation-link" data-track="click" data-track-action="download article citation" data-track-label="link" data-track-external="" rel="nofollow" href="https://citation-needed.springer.com/v2/references/10.1038/nature10738?format=refman&amp;flavour=citation">Download citation<svg width="16" height="16" focusable="false" role="img" aria-hidden="true" class="u-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" 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