(A) MYCN H-scores in residual disease from 115 primary, NAC-treated TNBCs (source: VUMC). Null, H-score=0. Int., intermediate, H-score >0 to ≤30. High, H-score >30. (B) Box plot showing MYCN H-scores in primary, treatment-naïve TNBC cases (n=191, see Fig. 1C) compared to residual disease from primary, NAC-treated TNBC cases (n=115, see Fig. 2A). Wilcoxon rank sum test, ***p=0.0001. (C) MYCN H-scores in patient-matched TNBC cases pre- and post-NAC (n=6, see table S2C for treatments and patient characteristics).