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This is particularly evident in the case of radiotherapy of cancers, and of liver cancer in particular. The development of modern radiotherapy with stereotactic body radiotherapy allows targeted treatments to be delivered to the tumor site, limiting the dose to surrounding healthy organs, thus becoming a new therapeutic alternative for hepatocellular carcinoma and other liver tumors. However, not all patients have the same response to radiotherapy or display the same side-effect profile. Biomarkers of response and toxicity in liver radiotherapy would facilitate the vision and practice of personalized medicine. This expert review examines the available molecular, radiomic, and radiogenomic biomarker candidates for acute liver toxicity with potential use for prediction of radiotherapy-induced liver toxicity. To this end, I highlight for oncologists and life scientists that radiomics allows diagnostic images to be analyzed using computer algorithms to extract information imperceptible to the human eye and of relevance to forecasting clinical outcomes. This article underscores particularly (1) the microRNA-based biomarker candidates as among the most promising predictors of radiation-induced liver toxicity and (2) the texture features in radiomic analyses for response prediction. Radiotherapy of hepatocellular carcinoma is edging toward personalized medicine with emerging radiomic biomarker candidates. Future large-scale biomarker studies are called for to enable personalized medicine in liver cancers.<\/jats:p>","DOI":"10.1089\/omi.2021.0065","type":"journal-article","created":{"date-parts":[[2021,8,27]],"date-time":"2021-08-27T11:55:18Z","timestamp":1630065318000},"page":"537-544","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Toward Personalized Medicine in Radiotherapy of Hepatocellular Carcinoma: Emerging Radiomic Biomarker Candidates of Response and Toxicity"],"prefix":"10.1177","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5425-3471","authenticated-orcid":false,"given":"Carolina","family":"De la Pinta","sequence":"first","affiliation":[{"name":"Radiation Oncology Department, Ramon y Cajal University Hospital, IRYCIS, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,9,9]]},"reference":[{"key":"e_1_3_3_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhepr.2020.100134"},{"key":"e_1_3_3_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40291-013-0049-0"},{"key":"e_1_3_3_4_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199306033282203"},{"key":"e_1_3_3_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/hep.25873"},{"key":"e_1_3_3_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhep.2014.10.004"},{"key":"e_1_3_3_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/hep.27877"},{"key":"e_1_3_3_8_1","doi-asserted-by":"publisher","DOI":"10.18632\/oncotarget.23423"},{"key":"e_1_3_3_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00261-019-02028-w"},{"key":"e_1_3_3_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijrobp.2012.02.037"},{"key":"e_1_3_3_11_1","doi-asserted-by":"publisher","DOI":"10.1089\/omi.2019.0215"},{"key":"e_1_3_3_12_1","first-page":"E44","article-title":"Functional imaging of radiation liver injury in a liver metastasis patient: Imaging and pathologic correlation","volume":"6","author":"Chapman TR","year":"2015","unstructured":"Chapman TR, , Kumarapeli AR, , Nyflot MJ, et al. 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