Table 1 Clinicopathologic features of the specimen cohort

Patients	Age (years)	Histology	Primary tumor size (cm)/stage ^a	Grade	LN	ER	PR	Her2/neu
1	53	Ductal	5.5/pT3	3	POS	NEG	POS	NEG
2	72	Ductal	0.9/pT1b	3	POS	POS	POS	POS
3	78	Ductal	2.7/pT2	3	POS	NEG	NEG	NEG
4	50	Ductal	2.3/pT2	2	NEG	POS	POS	POS
5	37	Ductal	1.7/pT1c	2	POS	POS	POS	NEG
6	73	Ductal	0.5/pT1a	1	NEG	POS	POS	POS
7	66	Ductal	1.2/pT1c	3	NEG	POS	NEG	POS
8	66	Papillary	1/pT1b	1	NEG	POS	POS	NEG
9	58	Ductal	0.8/pT1b	1	POS	POS	POS	NEG
10	51	Lobular	1.3/pT1c	2	NEG	POS	POS	NEG
11	75	Ductal	0.3/pT1a	2	POS	POS	POS	NEG
12	55	Lobular (L&R)	1.1(L:0.9, R:1.1)/pT1c	2	POS	POS	NEG	POS
13	66	Ductal	1.4/pT1c	1	NEG	POS	NEG	NEG
14	70	Ductal	0.3/pT1a	2	POS	NEG	NEG	NEG
15	86	Ductal	2.9/pT2	2	NEG	NEG	NEG	POS
16	58	Lobular	1.5/pT1c	2	NEG	POS	NEG	POS
17	43	Ductal	0.9/pT1b	2	NEG	POS	NEG	NEG
18	46	Ductal	1.2/pT1c	1	NEG	POS	POS	NEG
19	67	Ductal	4.6/pT2	2	NEG	NEG	NEG	POS
20	52	Ductal	1.8/pT1c	3	NEG	NEG	NEG	POS
21	67	Ductal	2.3/pT2	2	NEG	POS	POS	POS
22	66	Lobular	2.7/pT2	2	POS	POS	NEG	POS
23	70	Ductal	2/pT1c	2	POS	POS	NEG	POS
24	34	Ductal	2.4/pT2	2	POS	POS	POS	POS
25	71	Lobular	2.2/pT2	2	POS	POS	POS	POS
26	69	Ductal	1.1pT1c	1	NEG	POS	POS	NEG
27	56	Lobular	2.3/pT2	2	POS	POS	NEG	NEG
28	53	Ductal	0.2/pT1a	1	NEG	POS	NEG	NEG
29	91	Ductal	10/pT4	3	POS	POS	NEG	POS

LN=lymph node status; ER=estrogen receptor status; PR=progesterone receptor status; POS=positive; NEG=negative.
^aPrimary tumor stage according to AJCC 2002; insufficient patient data for stage grouping.

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