Association of oestrogen receptor beta 2 (ERβ2/ERβcx) with outcome of adjuvant endocrine treatment for primary breast cancer – a retrospective study

Table 1 Patient characteristics

Characteristic	Immunostaining cohort n (total = 141)	qRTPCR cohort n (total = 100)
Histology
invasive ductal	121	85
others	20	15
Grade
G1	22	14
G2	58	44
G3	61	42
Size
T1	63	44
T2	74	53
T3	3	2
unknown	1	1
Nodal status
+	51	39
-	67	49
unknown	23	12
Vascular invasion
present	60	41
absent	81	59
ERα ¹
+	98	70
-	43	30
PgR ¹
+	69	53
-	72	47
ERβ2 protein
high²	100	72
low	41	19
ERβ2 mRNA
high²	49	34
low	51	30

ISSN: 1471-2407