Table 4. Agreement within IHC (ORI versus REV, ORI versus DIA) and between IHC (ORI) and RT-Qpcr.

	ER / ESR1			PR /PGR			Ki67 / MKI67
IHC cutoff	Positive if ≥1%			Positive if ≥1%			Positive if ≥20%
RT-qPCR cutoff	Positive if RU ≥ 0			Positive if RU ≥ 0			Positive if RU ≥ 0
	ORI vs REV	ORI vs DIA	ORI vs RT-qPCR	ORI vs REV	ORI vs DIA	ORI vs RT-qPCR	ORI vs REV	ORI vs DIA	ORI vs RT-qPCR
Pearson´s coefficient	0.811	0.835	0.826	0.892	0.911	0.912	0.692	0.708	0.709