Table 1.

Summary of clinical data

	C	PC	VM	BM	CM
Patient characteristics
Total number	15	26	30	20	12
Median age	66	57.6	60	66.3	62.1
Deceased					5
Pre-/postmenopausal	1/14	10/16	6/24	2/18	2/10
Tumour characteristics
ER/PR positive		15	17	16	1
HER2/neu positive		8	11	3	11
Triple negative		2	2
Grading
Well differentiated (G1)		2	4	0	0
Moderately differentiated (G2)		18	11	16	6
Poorly differentiated (G3)		6	15	4	6
% of Ki67 positive cells (median)		25%	40%	15%	30%
Other					1

BM bone metastases, C control group of healthy donors, CM cerebral metastases, ER estrogen receptor, Her2/neu human epidermal growth factor 2, PC primary cancer, PR progesterone receptor, VM visceral metastases