Table 4. PAM50 intrinsic subtypes prediction (without normal breast-like subtype) agreement between NanoString nCounter and oligonucleotide microarray.

Microarray SSP2	nCounter SSP2
	Basal-like	HER2-enriched	Luminal A	Luminal B	Total
Basal-like	3	0	0	0	3
HER2-enriched	1	13	1	0	15
Luminal A	0	3	5	0	8
Luminal B	3	0	14	20	37
Total	7	16	20*	20	64*

Abbreviation: SSP2, SSP without normal breast-like subtype.

^*One luminal A case predicted by nCounter was unclassified by microarray.