{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T11:55:46Z","timestamp":1791633346331,"version":"4.3.4"},"reference-count":92,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2025,8,1]],"date-time":"2025-08-01T00:00:00Z","timestamp":1754006400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>The use of opioids for cancer-related pain is essential but poses significant challenges due to the risk of misuse and the development of opioid use disorder (OUD). This review takes a multidisciplinary perspective based on the current scientific literature to analyze the pharmacological mechanisms, classification, and therapeutic roles of opioids in oncology. Key risk factors for opioid misuse\u2014including psychiatric comorbidities, prior substance use, and insufficient clinical monitoring\u2014are discussed in conjunction with validated tools for pain assessment and international guidelines. The review emphasizes the importance of integrating toxicological, pharmacological, physiological, and public health perspectives to promote rational opioid use. Pharmacogenetic variability is explored as a determinant of treatment response and addiction risk, underscoring the value of personalized medicine. Evidence-based strategies such as early screening, psychosocial interventions, and the use of buprenorphine-naloxone are presented as effective measures for managing OUD in cancer patients. Ultimately, this work advocates for safe, patient-centered opioid prescribing practices that ensure effective pain relief without compromising safety or quality of life.<\/jats:p>","DOI":"10.3390\/ijms26157459","type":"journal-article","created":{"date-parts":[[2025,8,5]],"date-time":"2025-08-05T15:56:16Z","timestamp":1754409376000},"page":"7459","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Opioid Use in Cancer Pain Management: Navigating the Line Between Relief and Addiction"],"prefix":"10.3390","volume":"26","author":[{"given":"Maite","family":"Trullols","sequence":"first","affiliation":[{"name":"GRET and Toxicology Unit, Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4352-1784","authenticated-orcid":false,"given":"Vicen\u00e7","family":"Ruiz de Porras","sequence":"additional","affiliation":[{"name":"GRET and Toxicology Unit, Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1158\/2159-8290.CD-21-1059","article-title":"Hallmarks of Cancer: New Dimensions","volume":"12","author":"Hanahan","year":"2022","journal-title":"Cancer Discov."},{"key":"ref_2","doi-asserted-by":"crossref","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":"ref_3","doi-asserted-by":"crossref","first-page":"S25","DOI":"10.1016\/j.semcancer.2015.02.006","article-title":"Sustained proliferation in cancer: Mechanisms and novel therapeutic targets","volume":"35","author":"Feitelson","year":"2015","journal-title":"Semin. 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