Enhancer of the rudimentary gene homologue (ERH) expression pattern in sporadic human breast cancer and normal breast tissue

Table 1 Baseline characteristics of primary breast carcinomas (n = 25)

Variable	Categorization	n analyzable^a	%
*Clinico-pathologic data:*
Age at diagnosis
	median 63.7 years (range 35–83 years)
	<50 years	3	12
	= 50 years	22	88
Tumour stage^b
	pT1	10	40
	pT2	10	40
	pT3	3	12
	pT4	2	8
Lymph node status^b
	pN0	12	48
	pN1	1	4
	pN2	8	32
	pN3	4	16
Histologic grade
	G1	0	0
	G2	10	40
	G3	15	60
Histologic type
	ductal	20	80
	lobular	3	12
	mixed ductal/lobular	1	4
	other	1	4
*Immunohistochemistry (IHC):*
Estrogen receptor status
	negative (IRS^c 0–2)	5	20
	positive (IRS 3–12)	20	80
Progesterone receptor status
	negative (IRS 0–2)	7	28
	positive (IRS 3–12)	18	72
HER2 IHC
	unknown	2	8
	negative (0–1+)	19	76
	positive (2+–3+)	4	16

^a only female patients with primary, unilateral, invasive breast cancer were included
^b according to UICC: TNM Classification of Malignant Tumours. 6th edn (2002) Sobin LH, Wittekind CH (eds.) Wiley, New York.
^c IRS: immune-reactivity score

ISSN: 1471-2407