(A) The distribution of TNBC subtypes for non-Mp TNBC, metaplastic-like TNBC, and bona-fide MpBCs are shown in the columns. The statistical significance is annotated as in Fig 4A. (B) Kaplan-Meier plots of event-free, metastasis-free, and overall survival for patients with MpBC (yellow line), non-Mp TNBC (blue line), and metaplastic-like TNBC (gray line).