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Table 2 Cancer patient study population.

From: Development of fragment-specific osteopontin antibodies and ELISA for quantification in human metastatic breast cancer

Description n %
Histology
Invasive ductal 27 68
Invasive lobular 2 5
Other 11 28
Presenting stage of disease
I 5 13
II 15 38
III 8 20
IV 8 20
Unknown 4 10
Disease free interval
0 11 28
1–9 yrs 19 48
10+ yrs 9 23
Unknown 1 3
Hormone receptor status
ER+/PR+ 25 63
ER+/PR- 8 20
ER-/PR+ 1 3
ER-/PR- 3 8
Unknown 3 8
HER-2 / neu overexpression
Positive 4 10
Negative 27 68
Unknown 9 23
  1. Patient characteristics at time of breast cancer diagnosis (n = 40). Abbreviations: PR, progesterone receptor; ER, estrogen receptor