Abstract D067: The REACT study: A feasibility study to develop and test the integration of a California Cancer Registry Early Case Ascertainment process via electronic pathology reporting with an online clinical trial matching tool

Background: Representation of diverse patient populations in prostate cancer clinical trials is essential to ensure that trial results are applicable to all affected men. However, underrepresentation among racial/ethnic minorities remains a critical problem in cancer research. Population-based cancer registries provide a potential platform to overcome problems with inclusion of diverse patient populations in clinical research if they are used as a source for recruitment. Methods: Leveraging the statewide implementation of electronic pathology (e-path) for cancer case identification, we performed a pilot feasibility study, REACT (Registry Early case Ascertainment process via e-path with an online Clinical Trial matching tool), within the Greater Bay Area Cancer Registry to (1) develop and test a process using e-path to rapidly identify new cases of advanced prostate cancer for potential enrollment into existing prostate cancer clinical trials; and (2) test the utility of an online clinical trial matching tool used in combination with e-path to improve matching of underrepresented patients into advanced prostate cancer clinical trials. All study materials were translated into Spanish, and a Spanish-speaking bilingual recruiter is one of two recruiters. This study will accrue 50 patients. Results: Thus far, a total of 224 cases were identified from 19 reporting facilities through e-path and 213 (92%) were sent invitation letters. We have initiated recruitment contact calls with N=101; of these, 11 were excluded due to physician-indicated contraindication, and 17 (17%) declined participation. To date, 12 patients have enrolled in the study, 10 of whom completed baseline surveys, and 4 subsequently completed follow-up surveys after using the online matching tool. The majority (N=7) of participants were NH White; of higher income, >$150,000 (N=6); and of higher education, >bachelor’s/associate degree (N=8). Nine participants indicated use of the internet to learn about prostate cancer and 4 found internet prostate-cancer related information very useful. Nine participants reported receipt of prostate cancer treatment in the past 3 months, 8 received hormonal therapy, 4 received radiation, and 2 received surgery. To assess research knowledge and attitudes, 7 indicated awareness of cancer clinical trials, 6 indicated interest in participating in clinical research, 7 held a positive and 3 held a neutral attitude towards cancer clinical trials, however 5 indicated that they would not participate in a randomized study. To assess utility of the matching tool, 2 indicated it increased their interest in participating in clinical trials. Discussion: As the study progresses, we will focus effort on recruitment of underserved patients. However, thus far, preliminary results indicate that e-path used in combination with an online clinical trial matching tool may serve as an important recruitment vehicle for prostate cancer clinical trials. Citation Format: Hala T Borno, Christine Duffy, Sylvia Zhang, Todd Golden, Zinnia Loya, Debby Oh, Anobel Odisho, Scarlett Lin Gomez. The REACT study: A feasibility study to develop and test the integration of a California Cancer Registry Early Case Ascertainment process via electronic pathology reporting with an online clinical trial matching tool [abstract]. In: Proceedings of the Twelfth AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2019 Sep 20-23; San Francisco, CA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2020;29(6 Suppl_2):Abstract nr D067.