Table 4

Inverse associations between FISH results and AP-2α and/or YY1 levels in ERBB2 expressing group (1+, 2+, 3+)



ERBB2 FISH (percentage)


n
Negative
Positive
P value

AP-2α expression





0.017
     Low
12
4
(33)
8
(67)

     High
18
15
(83)
3
(17)








YY1 expression





0.029
     Low
14
6
(43)
8
(57)

     High
16
13
(81)
3
(19)








Combination





0.006
     AP-2α lo/YY1 lo
11
3
(27)
8
(73)

     AP-2α lo/YY1 hi or AP-2α hi/YY1 lo
4
4
(100)
0
(0)

     AP-2α hi/YY1 hi
15
12
(80)
3
(20)


AP-2α, activator protein 2 alpha; FISH, fluorescent in situ hybridization; hi, high expression; lo, low expression; YY1, Yin Yang 1.

Allouche et al. Breast Cancer Research 2008 10:R9   doi:10.1186/bcr1851