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Emerging evidence increasingly indicates CCT underrepresentation among patients of lower SES or rural origin, sexual and gender minorities, and patients with comorbid disability. This review applies an intersectional perspective to characterizing CCT representativeness across race and ethnicity, age, sexual and gender identity, SES, and disability. Four databases were systematically queried for articles addressing CCT participation inequities across these marginalizing indicators, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. One hundred one articles were included in a qualitative evaluation of CCT representativeness within each target population in the context of their intersectional impacts on participation. Findings corroborate strong evidence of CCT underrepresentation among patients of color, older age, lower SES, rural origin, and comorbid disabling conditions while highlighting systemic limitations in data available to characterize representativeness. Results emphasize how observed inequities interactively manifest through the compounding effects of minoritized social identity, inequitable economic conditions, and marginalizing medical experiences. Recommendations are discussed to more accurately quantify CCT participation inequities across underserved cancer populations and understand their underpinning mechanisms.<\/jats:p>","DOI":"10.1017\/cts.2024.677","type":"journal-article","created":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T04:01:22Z","timestamp":1734667282000},"source":"Crossref","is-referenced-by-count":6,"title":["The role of social, economic, and medical marginalization in cancer clinical trial participation inequities: A systematic review"],"prefix":"10.1017","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-1304-5626","authenticated-orcid":false,"given":"Grace Ann","family":"Hanvey","sequence":"first","affiliation":[{"name":"University of Florida"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hannah","family":"Johnson","sequence":"additional","affiliation":[{"name":"University of 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