SOX10 and neoplasm: Rather than a simple correlate of the TN phenotype, SOX10 positivity stratified TNBC-specific survival in both univariate (Fig. 2f and Supplementary Fig. 2j) and multivariate regression analyses, with a prognostic value greater than clinicopathologic indicators used in current clinical practice: tumour size, grade, and the density of tumour-infiltrating lymphocytes (TILs) (hazard ratio 1.8-2.5; p = 0.02–0.002; Supplementary Table 2).