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To disentangle the molecular mechanisms underlying tumorigenesis as well as identify and characterize molecular subtypes, the comparative and meta-analysis of large genomic variant collections can be of immense importance. Over the last decades, cancer genomic profiling projects have resulted in a large amount of somatic genome variation profiles, however segregated in a multitude of individual studies and datasets. The Progenetix project, initiated in 2001, curates individual cancer CNA profiles and associated metadata from published oncogenomic studies and data repositories with the aim to empower integrative analyses spanning all different cancer biologies. During the last few years, the fields of genomics and cancer research have seen significant advancement in terms of molecular genetics technology, disease concepts, data standard harmonization as well as data availability, in an increasingly structured and systematic manner. For the Progenetix resource, continuous data integration, curation and maintenance have resulted in the most comprehensive representation of cancer genome CNA profiling data with 138\u2009663 (including 115\u2009357 tumor) copy number variation (CNV) profiles. In this article, we report a 4.5-fold increase in sample number since 2013, improvements in data quality, ontology representation with a CNV landscape summary over 51 distinctive National Cancer Institute Thesaurus cancer terms as well as updates in database schemas, and data access including new web front-end and programmatic data access.<\/jats:p>\n                  <jats:p>Database URL: progenetix.org<\/jats:p>","DOI":"10.1093\/database\/baab043","type":"journal-article","created":{"date-parts":[[2021,6,30]],"date-time":"2021-06-30T09:34:00Z","timestamp":1625045640000},"source":"Crossref","is-referenced-by-count":28,"title":["The Progenetix oncogenomic resource in 2021"],"prefix":"10.1093","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8255-4722","authenticated-orcid":false,"given":"Qingyao","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland"},{"name":"Swiss Institute of Bioinformatics, Winterthurerstrasse 190, Zurich 8057, Switzerland"}]},{"given":"Paula","family":"Carrio-Cordo","sequence":"additional","affiliation":[{"name":"Department of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland"},{"name":"Swiss Institute of Bioinformatics, Winterthurerstrasse 190, Zurich 8057, Switzerland"}]},{"given":"Bo","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland"},{"name":"Swiss Institute of Bioinformatics, Winterthurerstrasse 190, Zurich 8057, Switzerland"}]},{"given":"Rahel","family":"Paloots","sequence":"additional","affiliation":[{"name":"Department of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland"},{"name":"Swiss Institute of Bioinformatics, Winterthurerstrasse 190, Zurich 8057, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9903-4248","authenticated-orcid":false,"given":"Michael","family":"Baudis","sequence":"additional","affiliation":[{"name":"Department of Molecular Life Sciences, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland"},{"name":"Swiss Institute of Bioinformatics, Winterthurerstrasse 190, Zurich 8057, Switzerland"}]}],"member":"286","published-online":{"date-parts":[[2021,7,17]]},"reference":[{"key":"2021071711191793600_R1","doi-asserted-by":"publisher","first-page":"646","DOI":"10.1016\/j.cell.2011.02.013","article-title":"Hallmarks of cancer: the next generation","volume":"144","author":"Hanahan","year":"2011","journal-title":"Cell"},{"key":"2021071711191793600_R2","doi-asserted-by":"publisher","first-page":"369","DOI":"10.1038\/ng1215","article-title":"Chromosome aberrations in solid tumors","volume":"34","author":"Albertson","year":"2003","journal-title":"Nat. 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