Biologic Roles of Estrogen Receptor-β and Insulin-Like Growth Factor-2 in Triple-Negative Breast Cancer

Table 3

Demographic characteristic of archival ER+, ER−, and TNBC breast samples.

Variable	ER+	ER−	TNBC
Race	ERα+/PR+/HER2+	ERα−/PR−/HER2+	ER−/PR−/HER2−
African American	3 (60%)	1 (20%)	2 (40%)
Caucasian	2 (40%)	4 (80%)	3 (60%)
AJCC stage
0-I	2 (40%)	None	1 (20%)
II	2 (40%)	None	None
III-IV	1 (20%)	5 (100%)	4 (80%)
Ki-67 status
Not recorded	4 (80%)	1 (20%)	1 (20%)
Low	1 (20%)	1 (20%)	1 (20%)
High		3 (60%)	3 (60%)
Metastasis
Not recorded			1 (20%)
Positive	2 (40%)	3 (60%)	2 (40%)
Negative	3 (60%)	2 (40%)	2 (40%)
Age, mean years (range)
<50 yrs	3 (45–49)	2 (35–49)	2 (45–49)
>50 yrs	2 (50–70)	3 (50–70)	3 (50–70)