LAUSR

143Background: Few patients, especially racial/ethnic minorities, enroll in clinical trials (CT), in part due to patient-oncologist communication. Question prompt lists (QPLs) improve communication, but have not been tested in CT discussions in a diverse patient population. We describe the development and acceptability of a theory-based QPL to improve communication and enrollment of White and Black men in prostate cancer CTs. Methods: Two existing QPLs were adapted by a team of communication scientists, psychologists, clinicians and patients. Guiding theories were the common ingroup identity model, which suggests people from different social groups can better achieve goals when they are on the same team, and patient-centered communication, which suggests that patient active participation improves clinical communication. The revised QPL included text to encourage patients to see themselves and their oncologist as a team, and 33 questions about CTs to encourage patients to participate actively in clinical i...