ERBB2 and breast cancer: After stratification for molecular subtypes, this association was only conserved in patients with luminal A breast cancer (responders n = 134; non-responders n = 341; Mann–Whitney p-value = 2.9 × 10−8; Figure 8H), as well as in patients with TNBC (responders n = 196; non-responders n = 277; Mann–Whitney p-value = 0.046; Figure 8I), but not in luminal B and HER2 patients [39].