期刊
TRIALS
卷 22, 期 1, 页码 -出版社
BMC
DOI: 10.1186/s13063-021-05121-y
关键词
Chimeric antigen receptor T cell therapy; Physician screening; Barriers to trial recruitment; Theoretical domains framework; Early phase clinical trials; Early phase immunotherapy trials
资金
- linical Social and Economic Impact (CSEI) grant from Biotherapeutics for Cancer Treatment (BioCanRx) [FY17/CSEI4]
- Government of Canada's Networks of Centres of Excellence
- Ottawa Hospital Anesthesia Alternate Funds Association
- Scholarship Protected Time Program, Department of Anesthesiology and Pain Medicine, uOttawa
By interviewing hematologists in Canada, it was found that they faced challenges such as lack of resources, high workload, and unclear roles when screening and recruiting patients for early phase immunotherapy trials. However, most physicians expressed intentions and willingness to screen for the trial, while also recognizing the challenges and attempting to find solutions.
Background: Novel therapies often fail to reach the bedside due to low trial recruitment rates. Prior to conducting one of the first chimeric antigen receptor (CAR) T cell therapy trials in Canada, we used the Theoretical Domains Framework, a novel tool for identifying barriers and enablers to behavior change, to identify physician-related barriers and enablers to screening and recruiting patients for an early phase immunotherapy trial. Methods: We conducted interviews with hematologists across Canada and used a directed content analysis to identify relevant domains reflecting the key factors that may affect screening and recruitment. Results: In total, we interviewed 15 hematologists. Physicians expressed cautious hope; while expressing safety, feasibility, and screening criteria concerns, 14 out of 15 hematologists intended to screen for the trial (domains: knowledge, goals, beliefs about consequences, intentions). Physicians underscored the challenging contexts, identifying resources, workload, forgetting, and patient wait times to receive CAR T cells as key practical barriers to screening (domains: environmental context and resources, memory, attention and decision-making, behavioral regulation). They also highlighted variability in roles and procedures that may lead to missed trial candidates (domain: social and professional role). Left unaddressed, these barriers may undermine trial recruitment. Conclusions: This study is among the first to use the Theoretical Domains Framework from the physician perspective to identify recruitment challenges to early phase trials and demonstrates the value of this approach for identifying barriers to screening and recruitment that may not otherwise have been elicited. This approach can optimize trial procedures and may serve to inform future promising early phase cancer therapy trials.
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