Table 3.

Gene expression profiles of TNBC subtype–specific genes

Subtype specificity	Gene (median probe)	Biological process	TNBC profile
C1	AR	Androgen signalling	C1 > C2 = C3
	FOXA1	Androgen signalling	C1 > C2 = C3
C2	FOXC1	Development (basal-like marker)	C2 > C3 > C1
C3	CD8A	Immune response (T lymphocytes)	C3 > C1 > C2
	IGKC	Immune response (immunoglobulin)	C3 > C1 > C2
	STAT1	Immune response (interferon pathway)	C3 > C2 = C1
	CD274 (PD-L1)	Immune response (immune checkpoint)	C3 > C2 = C1
	PDCD1 (PD1)	Immune response (immune checkpoint)	C3 > C2 = C1