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<title>Genomic analysis of 33 cancer types completed | National Institutes of Health (NIH)</title>
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<p class="publishdate"><span property="dc:date" datatype="xsd:dateTime" content="2018-04-10T00:00:00-04:00" class="date-display-single">April 10, 2018</span></p><div class='syndicate'><h1>Genomic analysis of 33 cancer types completed </h1><div class="callout callout-with-border"><h3>At a Glance</h3>
<ul>
<li>Using molecular and clinical information from more than 10,000 tumors, researchers finished a detailed genomic analysis of 33 types of cancer.</li>
<li>This better understanding of how, where, and why cancer develops will inform the development of novel and more personalized treatment approaches.</li>
</ul></div><div class="media-float-right"><div class="ds-1col file file-image file-image-jpeg view-mode-floated_media clearfix">
<picture title="Squamous cell carcinoma">
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<img src="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium/public/news-events/research-matters/2018/20180410-cancer.jpg?itok=fGczI6oK&amp;timestamp=1523359569" alt="Squamous cell carcinoma, a type of skin cancer" title="Squamous cell carcinoma" />
</picture><span class="caption">This image shows the uncontrolled growth of cells in squamous cell carcinoma, a common form of skin cancer.</span><span class="credit">Markus Schober and Elaine Fuchs, The Rockefeller University</span></div>
</div><p>Cancer is caused by changes to DNA that affect the way cells grow and divide. There are at least 200 forms of cancer, with many subtypes. Identifying the changes in each cancers complete set of DNA—its genome—and understanding how these changes interact to drive the disease will lay the foundation for improving cancer prevention, early detection, and tailored treatments.</p>
<p>The Cancer Genome Atlas (TCGA) was launched in 2005 by NIHs National Human Genome Research Institute (NHGRI) and National Cancer Institute (NCI) to map the key genomic changes in <a href="https://cancergenome.nih.gov/cancersselected">33 types of cancer</a>. The multi-institution collaboration focused not only on cancer genome sequencing, but also on different types of molecular data collection and analysis, such as investigating gene and protein expression profiles (when they are turned on or off) and associating them with clinical and imaging data. With over $300 million in total funding, the project involved more than 150 researchers at more than two dozen institutions.</p>
<p>The PanCancer Atlas sums up the work accomplished by TCGA in a collection of 27 papers across a suite of <em>Cell</em> journals. Three summary papers published on April 5, 2018, recap the core findings, and companion papers report more in-depth explorations.</p>
<p>The first summary paper describes a technique called molecular clustering that groups cancers based on their molecular characteristics rather than their tissue of origin. The scientists analyzed gene expression, DNA modifications, protein expression, and other data from about 10,000 tissue samples representing 33 different types of cancer. The team identified 28 distinct clusters based on molecular similarities. Although most of these clusters could be linked to tissue of origin, many contained different cancer types. The most diverse group had 25 cancer types. These findings could help guide the treatment of many cancer patients whose tumors are of unknown origin.</p>
<p>The second paper presents findings on oncogenesis, the processes that lead to cancer development and progression. The authors focused on three critical oncogenic processes: the DNA mutations that drive cancers; the influence of DNA alterations on gene and protein expression; and the interplay of tumors with their surroundings, particularly immune cells. The results will help in the development of new treatments for a wide range of cancers.</p>
<p>The final paper details genomic alterations in 10 key signaling pathways that control the stages of the cells life cycle, growth, and death. The researchers found that 89% of tumors had at least one significant alteration in these pathways. About 57% of tumors had at least one alteration that could be targeted with currently known drugs and 30% had multiple targetable alterations. These findings will help researchers explore treatments with more tailored approaches, such as using a combination of drugs to target multiple pathways at the same time.</p>
<p>“TCGA was the first project of its scale to characterize—at the molecular level—cancer across a breadth of cancer types,” says Dr. Carolyn Hutter, NHGRI team lead for TCGA. “At the projects infancy 10 years ago, it wasnt even possible, much less on such a scale, to do the types of characterization and analysis that were being proposed. It was a hugely ambitious project.”</p>
<p>“The PanCancer Atlas effort complements the <a href="https://cancergenome.nih.gov/publications">over 30 tumor-specific papers</a> that have been published by TCGA in the last decade and expands upon earlier pan-cancer work that was published in 2013,” says Dr. Jean Claude Zenklusen, director of the TCGA Program Office at NCI.</p></div><h2 class="label-above">Related Links</h2><ul class="spaced print-urls"><li><a href="https://www.nih.gov/news-events/nih-research-matters/genomics-cervical-cancer" target="_top">The Genomics of Cervical Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/genomic-diversity-metastases-among-men-prostate-cancer" target="_top">Genomic Diversity of Metastases Among Men With Prostate Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/novel-approach-gives-insights-into-tumor-development" target="_top">Novel Approach Gives Insights Into Tumor Development</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/study-uncovers-alterations-head-neck-cancers" target="_top">Study Uncovers Alterations in Head and Neck Cancers</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/gene-changes-identified-most-common-lung-cancer" target="_top">Gene Changes Identified in Most Common Lung Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/genome-study-yields-insights-into-bladder-cancer" target="_top">Genome Study Yields Insights Into Bladder Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/genomic-analysis-endometrial-tumors" target="_top">Genomic Analysis of Endometrial Tumors</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/new-insights-into-breast-cancer" target="_top">New Insights Into Breast Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/colon-rectal-cancers-surprisingly-similar" target="_top">Colon and Rectal Cancers Surprisingly Similar</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/detailed-look-ovarian-cancer" target="_top">A Detailed Look at Ovarian Cancer</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/genomic-survey-melanoma" target="_top">A Genomic Survey of Melanoma</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/mutations-affect-acute-myeloid-leukemia-treatment-outcomes" target="_top">Mutations Affect Acute Myeloid Leukemia Treatment Outcomes</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/study-reveals-large-number-cancer-genes" target="_top">Study Reveals Large Number of Cancer Genes</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/genetic-underpinnings-cancer" target="_top">The Genetic Underpinnings of Cancer</a></li><li><a href="http://cancergenome.nih.gov/" target="_top">The Cancer Genome Atlas</a></li></ul><p class="footnote"><strong class="label-inline">References:&nbsp;</strong><a href="https://www.ncbi.nlm.nih.gov/pubmed/29625048">Cell-of-Origin Patterns Dominate the Molecular Classification of 10,000 Tumors from 33 Types of Cancer.</a> Hoadley KA, Yau C, Hinoue T, Wolf DM, Lazar AJ, Drill E, Shen R, Taylor AM, Cherniack AD, Thorsson V, Akbani R, Bowlby R, Wong CK, Wiznerowicz M, Sanchez-Vega F, Robertson AG, Schneider BG, Lawrence MS, Noushmehr H, Malta TM; Cancer Genome Atlas Network, Stuart JM, Benz CC, Laird PW. <em>Cell</em>. 2018 Apr 5;173(2):291-304.e6. doi: 10.1016/j.cell.2018.03.022. PMID: 29625048.<br /><br />
<a href="https://www.ncbi.nlm.nih.gov/pubmed/29625049">Perspective on Oncogenic Processes at the End of the Beginning of Cancer Genomics.</a> Ding L, Bailey MH, Porta-Pardo E, Thorsson V, Colaprico A, Bertrand D, Gibbs DL, Weerasinghe A, Huang KL, Tokheim C, Cortés-Ciriano I, Jayasinghe R, Chen F, Yu L, Sun S, Olsen C, Kim J, Taylor AM, Cherniack AD, Akbani R, Suphavilai C, Nagarajan N, Stuart JM, Mills GB, Wyczalkowski MA, Vincent BG, Hutter CM, Zenklusen JC, Hoadley KA, Wendl MC, Shmulevich L, Lazar AJ, Wheeler DA, Getz G; Cancer Genome Atlas Research Network. <em>Cell</em>. 2018 Apr 5;173(2):305-320.e10. doi: 10.1016/j.cell.2018.03.033. PMID: 29625049.<br /><br />
<a href="https://www.ncbi.nlm.nih.gov/pubmed/29625050">Oncogenic Signaling Pathways in The Cancer Genome Atlas.</a> Sanchez-Vega F, Mina M, Armenia J, Chatila WK, Luna A, La KC, Dimitriadoy S, Liu DL, Kantheti HS, Saghafinia S, Chakravarty D, Daian F, Gao Q, Bailey MH, Liang WW, Foltz SM, Shmulevich I, Ding L, Heins Z, Ochoa A, Gross B, Gao J, Zhang H, Kundra R, Kandoth C, Bahceci I, Dervishi L, Dogrusoz U, Zhou W, Shen H, Laird PW, Way GP, Greene CS, Liang H, Xiao Y, Wang C, Iavarone A, Berger AH, Bivona TG, Lazar AJ, Hammer GD, Giordano T, Kwong LN, McArthur G, Huang C, Tward AD, Frederick MJ, McCormick F, Meyerson M; Cancer Genome Atlas Research Network, Van Allen EM, Cherniack AD, Ciriello G, Sander C, Schultz N. <em>Cell</em>. 2018 Apr 5;173(2):321-337.e10. doi: 10.1016/j.cell.2018.03.035. PMID: 29625050.<br /><br />
The entire collection of papers comprising the PanCancer Atlas are available through a <a href="http://www.cell.com/consortium/pancanceratlas">portal on cell.com</a>.</p><p class="footnote"><strong class="label-inline">Funding:&nbsp;</strong>NIHs National Human Genome Research Institute (NHGRI) and National Cancer Institute (NCI).</p>
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<li><a class="lastTab" href="https://www.usa.gov/">USA.gov</a></li>
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