BCR and neoplasm: After a preselection step using univariate Cox analysis, the expression levels of 3220 ERVs from samples in the training set were used to build a 29-ERV prognosticator of BCR using a Lasso-Cox proportional hazards model, and the final risk-prediction model was built by combining this panel of 29 markers with the available clinical data, including Gleason value, PSA, age, and tumor stage (Table S6).