S346 Enrollment Rate of African Americans in a Colon Cancer Screening Trial at a Historically Black College and University Is Similar to Other Patient Populations

Abstract

Introduction: Clinical trials often have low enrollment of minorities, particularly African-Americans (AAs), which may limit the generalizability of research findings. Previously identified barriers to AAs recruitment include historical abuses leading to mistrust, communication issues with providers, socio-economic factors, and a lack of access to clinical trials. In a Historically Black College and University (HBCU) serving a primarily AA population at a large safe-net hospital, we evaluated the enrollment of eligible AA patients for a colorectal cancer (CRC) screening clinical trial. This was compared to the enrollment rates across other study sites. Methods: A large, prospective, multi-centered clinical trial to validate a blood-based test for early detection of CRC (PREEMPT-CRC) was initiated at a HBCU, where 84% of patients are AAs. To maximize study recruitment, culturally sensitive methods were employed including racially congruent recruitment staff as well as synchronized timing of consent/study procedures with pre-endoscopy COVID testing/clinic visits. Detailed information for all eligible subjects was recorded. Demographic and socio-economic data including census information for enrolled and not enrolled subjects were compared. The enrollment rate (defined as enrolled/eligible patients) over the first 6 weeks at the HBCU and that of the other study sites providing screening logs was analyzed. Results: The enrollment rate at the HBCU was 55% (44 out of 80 eligible patients; 95% CI 43.5-66.2%), compared to 49.8% (258 out of 518 eligible patients; 95% CI 45.4- 54.2%) at the other 26 study sites. While age and gender of enrolled patients at the HBCU were comparable to other sites, the main difference was race: at the HBCU the study participants were 79.5% AAs and 9.1% whites, while at the other sites the participants were 11.5% AAs and 82.8% whites (p< 0.001). At the HBCU, the demographic characteristics and socio-demographic data including income, marital status, insurance status/type, and census tract median household income of the 44 enrolled and 36 not-enrolled subjects were similar (Table 1). Conclusion: Contrary to conventional belief that AAs do not want to be involved in clinical trials, we find their enrollment is similar to a predominant white study population when offered the opportunity in a culturally sensitive setting. Future trials should consider including HBCU sites in order to attain adequate AA enrollment to improve the generalizability of research findings.Table 1.: Baseline Patient Demographic and Sociodemographic Information