Figure 4. Establishment and validation of an immune-related gene prediction model for the OS of prostate cancer bone metastases. (A) K-M, ROC, and risk factor analysis were performed to access the association among risk score, mortality, and characteristic gene expression in the training cohort. (B) K-M, ROC, and risk factor analysis were performed to access the association among risk score, mortality, and characteristic gene expression in the validation cohort.