ERBB2 and neoplasm: In multivariate analysis, molecular subtype was independently associated with CNSM-FS: hazard ratios were 2.01 (95% CI: 1.29–3.15, p = 0.0021) and 1.57 (95% CI: 1.25–1.97, p < 0.0001) for HER2+/HR− and triple-negative tumours, respectively (compared with HER2−/HR+ tumours).