Table 2. Correlation of ERalpha, RBCK1, RNF31 and SHARPIN mRNA expression levels in breast tumors.

Pearson correlation was performed pairwise for all assayed mRNAs in breast tumors and the subgroup of ERalpha-positive tumors.

Paired	Variables	72 tumors		47 ERalpha-positive tumors
		Pearson correlation	P value	Pearson correlation	P value
ERalpha	RBCK1	0.27	0.020*	0.51	< 0.001**
ERalpha	RNF31	0.25	0.036*	0.29	0.042*
ERalpha	SHARPIN	0.18	0.136	0.61	< 0.001**
RBCK1	RNF31	0.15	0.202	0.16	0.270
RBCK1	SHARPIN	0.52	< 0.001**	0.57	< 0.001**
RNF31	SHARPIN	0.48	< 0.001**	0.56	< 0.001**

*Statistically significant (p < 0.05 in two-tailed test).

**Statistically significant (p < 0.01 in two-tailed test).