Table 2.

Summary of Study 2 adjacent normal (N) breast tissue constituents including fat, muscle, and either benign (normal or usual ductal hyperplasia, UDH) or malignant epithelium, as well as MIP array determined copy number normalcy or abnormality (CNA) and HER2 copy number gain and HER2 IHC assay (1–3+) of cancer (CA) cells identified in the N samples

Sample pair #	N #	N stroma (yes = 1)	N fat (yes = 1)	N muscle (yes = 1)	N epi (yes = 1)	N epi-UDH (yes = 1)	N CA-epi (yes = 1)	N CA-epi HER2 (IHC)	N HER2 Gain (MIP, yes = 1)	N Other CNA (MIP, yes = 1)	N normal CN (MIP, yes = 1)
1	21N	1	1	1	0	0	0		0	0	1
2	22N	1	1	0	0	0	1	3	1	1	0
3	23N	0	1	0	0	0	0		0	0	1
4	24N	1	1	0	0	0	0		0	0	1
5	25N	1	1	0	0	0	0		0	0	1
6	26N	1	1	0	1	1	0		0	0	1
7	27N	1	1	0	1	1	0		0	0	1
8	28N	1	1	0	0	0	1	3	1	1	0
9	29N	1	1	0	0	0	0		1	1	0
10	30N	0	0	0	1	0	0		0	1	0
11	31N	1	1	0	1	0	0		0	0	1
12	32N	1	1	0	1	0	0		0	0	1
13	33N	1	1	0	1	1	0		0	0	1
14	34N	1	1	0	1	0	0		0	0	1
15	35N	1	1	0	1	0	0		0	1	0
16	36N	1	1	0	0	0	0		1	1	0
17	37N	1	1	0	0	0	0		1	0	0
18	38N	0	1	0	0	0	1	3	1	1	0
19	39N	1	1	0	1	0	0		0	0	1
20	40N	1	1	0	1	0	1	3	1	1	0