[2Win5] Poster session 2

[2Win5-86] Prediction of Treatment Outcomes and Imaging Results for Colorectal Cancer Using Large-Scale Electronic Medical Records

〇Shumpei Muramatsu¹, Satoshi Hirakawa², Keisuke Yamamoto³, Michishi Kashiwabara², Daisuke Oishi², Hiromasa Horiguchi⁴, Yoshinobu Kano¹ (1.Shizuoka University, 2.Seirei Hamamatsu General Hospital, 3.AIN HOLDINGS INC., 4.National Hospital Organization)

Keywords:EHR, colorectal cancer, Prediction

In this study, we aimed to predict the treatment efficacy in cancer therapy using examination and medication information, as well as basic patient information extracted from electronic medical records (EMRs) of colorectal cancer patients. As an indicator of treatment efficacy, we focused on imaging examination results, which were extracted from the text in the EMRs using a large language model. We constructed an EMR dataset of 7,257 colorectal cancer patients collected from 22 institutions and conducted experiments using XGBoost. The results showed that we achieved an accuracy of 61.20% for the three-class classification task (response/stable/progression) and 79.92% for the two-class classification task (response or stable/progression). Analysis of important features suggested the influence of liver function-related characteristics.