Metaplastic breast cancers frequently express immune checkpoint markers FOXP3 and PD-L1.

3f ), however, a modified cut-off at a count/hpf of 20, displays a trend toward significance over time (Fig. 3g ).

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Membrane staining or WNT inactivity, did not differentiate survival outcomes between squamous and carcinoma patients, but showed a trend toward a poor outcome in spindle MBCs (Fig. 4e ).

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