Abstract
5087 Background: Clinical trials can provide access to novel systemic agents and possible improved survival for men diagnosed with regional and metastatic prostate cancer. Although clinical trials should be accessible to all patient populations, racial disparities to enrollment of clinical trials and its outcomes remain an important unknown outcome. Herein, we sought to elucidate the racial disparities in clinical trial enrollment and survival amongst advanced prostate cancer patients from a large community-based medical oncology consortium. Methods: Using CancerLinQ, we identified all patients who were diagnosed with regional (N1+) and/or metastatic (M1) prostate cancer from 2011 – 2021. Enrollment into a clinical trial and overall survival constituted the primary outcomes in this study. Multivariable logistic regression and Cox proportional hazard regression were used to identify covariates associated with each outcome. Results: Amongst the 160,888 patients with regional/metastatic prostate cancer, only 1.5% patients were enrolled in a clinical trial (n = 2,368). On multivariable analysis, patients with worse ECOG performance status were associated with lowers odds of clinical trial enrollment (p < 0.001). Relative to white patients, African-American men (AAM) also had lower odds of clinical trial enrollment (OR: 0.67; p < 0.001). For the entire cohort, clinical trial enrollment correlated with higher survival (HR: 1.19; p < 001) and lower survival for AAM men (HR: 0.85; p < 0.001) compared to white men after adjusting for other covariates. In the subgroup analysis of patients enrolled in clinical trials, AAM demonstrated similar survival to white patients (HR: 0.96, p = 0.95). Conclusions: Although African-American men with regional/metastatic prostate cancer face barriers to clinical trial enrollment, racial disparities in survival appear to resolve for patients who enroll in clinical trials. Increased attention is needed to address barriers to communication and access to clinical trials.
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