Table 2.

Subjects from the breast cancer patient group, classified by biologic markers and serum DJ-1 levels

Marker	No.	DJ-1, ng/mL	P-value
Estrogen receptor
Positive	148	34.9	P = 0.012
Negative	32	78.9
Progesterone receptor
Positive	126	31.8	P = 0.013
Negative	54	68.1
HER2
Positive	47	55.8	NS
Negative	133	38.1
Ki-67 labeling index
High	121	53.3	P = 0.022
Low	59	21.0
Total	180	42.7

HER2, human epidermal growth factor receptor 2; NS, not significant.