Table 1.

Association between PrP mRNA levels and breast cancer parameters

	Chin et al., 2006			van der Vijver et al., 2002			Minn et al., 2005
	Low PrP (n = 59)	High PrP ( n = 59)		Low PrP (n = 147)	High PrP (n = 147)		Low PrP (n = 49)	High PrP (n = 49)
	Mean ± SD	Mean ± SD	P-value	Mean ± SD	Mean ± SD	P-value	Mean ± SD	Mean ± SD	P-value
PrP	0.75 ± 0.1	1.49 ± 0.4	< 0.001*	0.72 ± 0.2	1.53 ± 0.6	< 0.001*	0.63 ± 0.1	1.38 ± 0.4	< 0.001*
ERS	0.81 ± 0.4	0.47 ± 0.5	< 0.001*	0.90 ± 0.3	0.63 ± 0.5	< 0.001*	0.82 ± 0.4	0.33 ± 0.5	< 0.001*
PR	0.68 ± 0.5	0.45 ± 0.5	0.012*	Not Available			0.59 ± 0.5	0.27 ± 0.4	0.001*
Grade	2.29 ± 0.7	2.53 ± 0.7	0.049*	2.06 ± 0.8	2.23 ± 0.8	0.068	Not Available
Age	55.1 ± 16	55.1 ± 14	0.995	44.5 ± 5	43.5 ± 6	0.129	58.7 ± 14	53.3 ± 12	0.050*
5Y Met Event	% with metastasis after 5 yrs 1 = yes, 0 = no						0.19 ± 0.4	0.44 ± 0.5	0.029*
Met Event	% with metastatic event independent of time						0.24 ± 0.4	0.42 ± 0.5	0.085
MFS	% with metastasis free survival (yrs)						5.63 ± 2.0	4.68 ± 2.5	0.064
LM Event	Lung metastasis						0.05 ± 0.2	0.28 ± 0.5	0.007*
LMFS	Lung metastasis free survival (yrs)						6.02 ± 1.8	4.96 ± 2.6	0.037*
BM Event	Bone metastasis						0.13 ± 0.3	0.21 ± 0.4	0.362
BMFS	Bone metastasis free survival (yrs)						5.83 ± 1.9	4.82 ± 2.5	0.046*