TABLE 1.

Quantitation of HER4 and BRCA1 transcripts by real-time RT-PCR^a

Tumor no.	Avg no. of transcripts		Presence of HRG
	HER4	BRCA1
1	50	817	−
2	330	301	+
3	470	3,411	−
4	960	821	−
5	1,220	891	+
6	1,450	1,882	−
7	2,710	1,087	+
8	8,450	1,770	+
9	8,770	2,617	−
10	12,180	1,603	−
11	16,570	2,427	+
12	20,860	6,207	+
13	22,960	11,126	+
14	25,950	2,318	−
15	49,330	6,447	−
16	50,910	4,583	+
17	57,820	4,714	+
18	77,930	8,922	+
19	95,860	4,934	+

^aBreast cancer specimens were used to measure absolute levels of HER4 and BRCA1 mRNAs by qPCR. Each sample was independently analyzed three times. qPCR was used to detect the presence (+) or absence (−) of HRG in each of the breast tumor specimens.