9072 Background: In an effort to improve the informed consent process for subjects considering participation in a clinical trial, we created an educational video: “Entering a Clinical Trial: Is it Right for You?” In this randomized study, we assessed the effect of the video on patients’ understanding and perceptions of clinical trials. We also assessed patient satisfaction with the video and how the video impacted decision-making and patient-provider communication. Methods: We recruited 90 adults considering cancer clinical trials of whom 77 participated. After discussing the trial with the physician and reading the trial consent form, patients were randomized to receive (n=38) or not receive (n=39) the study video. Using a validated questionnaire, we interviewed subjects to assess objective understanding of the trial, our primary endpoint, and self-reported understanding of clinical trials. All subjects completed a second interview assessing secondary endpoints, including patient-provider communication, satisfaction with video, and decision-making. We used linear regression (two-sided tests) to conduct the primary analysis and the Wilcoxon rank-sum test and descriptive statistics to analyze the secondary aims. Results: Neither objective nor self-reported understanding of clinical trials differed between the two groups (Mean 86.5 vs. 87, p=0.75). 85% (61/72) indicated the video was an important source of information about clinical trials; 89% of those who watched the video with their family/friends (n=37) said the video helped loved ones better understand clinical trials; 73% indicated it helped their family accept their decision about participation. 81% (58/72) felt better prepared to discuss the trial with their physician after watching the video. Of those who found the video helpful with decision- making, 80% (21/26) were considering a trial for the first time compared with 19% (5/26) veterans who had previously participated in a clinical trial. Conclusions: The video did not measurably improve subjects’ understanding of their clinical trials. However, subjects reported that the video was an important source of information, helped them educate their families, and enhanced patient-provider communication. No significant financial relationships to disclose.