Table 1.

Summary of Study 2 tumor (T) characteristics including age-at-diagnosis, MIP array estimate of HER2 gene copy number, HER2 protein overexpression level by ELISA, estrogen and progesterone receptor (ER, PR) status, tumor size, stage (T1–4), and nodal (N0–1) status

Sample pair #	T #	Age	T HER2 CN (MIP)	T HER2 U/mg (ELISA)	T ER	T PR	T cm	Tumor stage	Nodal stage
1	21T	50	12.2	659	neg	neg	3	2	0
2	22T	57	7	372	pos	pos	1.7	1	0
3	23T	39	7.8	362	neg	neg	2.5	2	1
4	24T	38	3.8	359	pos	neg	2.7	2	0
5	25T	47	5.5	429	pos	neg	3	4	1
6	26T	53	17.5	420	neg	neg	2.4	2	0
7	27T	78	18	282	pos	pos	3	2	1
8	28T	79	4.5	838	neg	neg	2.5	2	0
9	29T	46	25.8	430	neg	neg	3.5	2	1
10	30T	39	29.9	326	neg	neg	2.5	2	1
11	31T	54	5	608	pos	neg	4	2	1
12	32T	54	14.1	493	pos	pos	1.8	1	0
13	33T	55	18.1	481	neg	neg	2.5	2	0
14	34T	54	56.7	814	pos	pos	5.5	3	1
15	35T	77	12	446	neg	neg	6.2	4	1
16	36T	68	9.8	627	neg	neg	2.4	2	0
17	37T	52	18.1	697	neg	neg	3	2	0
18	38T	52	3.6	401	pos	neg	3	2	0
19	39T	65	4.7	447	pos	neg	2.2	2	0
20	40T	67	3	434	pos	neg	6	3	0