The selection of the optimal positivity threshold and the correlative and prognostic associations of CSF-1R on carcinoma cells and macrophages were first assessed in the training cohort (n = 1183) of the BC Cancer series (Supplementary Tables S2–S4 and Supplementary Figure S3) before confirming the results in the validation cohort, presented in this section. The gene discussed is CSF1R; the disease is carcinoma.