{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:58:49Z","timestamp":1760237929878,"version":"build-2065373602"},"reference-count":63,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,7,27]],"date-time":"2022-07-27T00:00:00Z","timestamp":1658880000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"national funds through Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","doi-asserted-by":"publisher","award":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"],"award-info":[{"award-number":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"MATISSE","doi-asserted-by":"publisher","award":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"],"award-info":[{"award-number":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"MONET","doi-asserted-by":"publisher","award":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"],"award-info":[{"award-number":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"European Union\u2019s Horizon 2020 research and innovation program","award":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"],"award-info":[{"award-number":["PD\/BD\/139146\/2018","UIDB\/50021\/2020","DSAIPA\/DS\/0026\/2019","PTDC\/CCI-BIO\/4180\/2020","951970"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>Clear cell renal cell carcinoma (ccRCC) is the most common subtype of RCC showing a significant percentage of mortality. One of the priorities of kidney cancer research is to identify RCC-specific biomarkers for early detection and screening of the disease. With the development of high-throughput technology, it is now possible to measure the expression levels of thousands of genes in parallel and assess the molecular profile of individual tumors. Studying the relationship between gene expression and survival outcome has been widely used to find genes associated with cancer survival, providing new information for clinical decision-making. One of the challenges of using transcriptomics data is their high dimensionality which can lead to instability in the selection of gene signatures. Here we identify potential prognostic biomarkers correlated to the survival outcome of ccRCC patients using two network-based regularizers (EN and TCox) applied to Cox models. Some genes always selected by each method were found (COPS7B, DONSON, GTF2E2, HAUS8, PRH2, and ZNF18) with known roles in cancer formation and progression. Afterward, different lists of genes ranked based on distinct metrics (logFC of DEGs or \u03b2 coefficients of regression) were analyzed using GSEA to try to find over- or under-represented mechanisms and pathways. Some ontologies were found in common between the gene sets tested, such as nuclear division, microtubule and tubulin binding, and plasma membrane and chromosome regions. Additionally, genes that were more involved in these ontologies and genes selected by the regularizers were used to create a new gene set where we applied the Cox regression model. With this smaller gene set, we were able to significantly split patients into high\/low risk groups showing the importance of studying these genes as potential prognostic factors to help clinicians better identify and monitor patients with ccRCC.<\/jats:p>","DOI":"10.3390\/cells11152311","type":"journal-article","created":{"date-parts":[[2022,7,27]],"date-time":"2022-07-27T21:11:05Z","timestamp":1658956265000},"page":"2311","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Kidney Cancer Biomarker Selection Using Regularized Survival Models"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7958-850X","authenticated-orcid":false,"given":"Carolina","family":"Peixoto","sequence":"first","affiliation":[{"name":"INESC-ID, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0429-9380","authenticated-orcid":false,"given":"Marta","family":"Martins","sequence":"additional","affiliation":[{"name":"Instituto de Medicina Molecular\u2014Jo\u00e3o Lobo Antunes, Faculdade de Medicina de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisbon, Portugal"}]},{"given":"Lu\u00eds","family":"Costa","sequence":"additional","affiliation":[{"name":"Instituto de Medicina Molecular\u2014Jo\u00e3o Lobo Antunes, Faculdade de Medicina de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisbon, Portugal"},{"name":"Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Avenida Professor Egas Moniz, 1649-028 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1954-5487","authenticated-orcid":false,"given":"Susana","family":"Vinga","sequence":"additional","affiliation":[{"name":"INESC-ID, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"721","DOI":"10.1038\/s41581-020-0316-3","article-title":"The immunology of renal cell carcinoma","volume":"16","author":"Rini","year":"2020","journal-title":"Nat. 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