Table 2 Demographic characteristics of the study populations. IQR: interquartile range; AR: androgen receptor nAPE1: nuclear APE1; cAPE1: cytoplasmic APE1
Categorical variables | ||
 Variable (N) |  | Frequency (%) |
 Grading (99) | 1 | 1 (1%) |
2 | 24 (24%) | |
3 | 74 (75%) | |
 Tumor size (92) | 1 | 59 (64%) |
2 | 27 (29%) | |
3 or 4 | 6 (7%) | |
 Nodal status (91) | Positive | 39 (57%) |
Negative | 52 (43%) | |
 De-novo metastatic (111) | Yes | 7 (6%) |
No | 104 (94%) | |
 Neo/Adj Anthracyclines (104) | Yes | 74 (71%) |
No | 30 (29%) | |
 Neo/Adj Taxanes (104) | Yes | 63 (61%) |
No | 41 (39%) | |
Continuous variables | ||
 Variable (N) | Median | IQR |
 Age at diagnosis (111) | 57 | 38–83 |
 Ki67 (84) | 70 | 2–98 |
 AR (111) | 0 | 0–90 |
 nAPE1 (111) | 90 | 70–100 |
 cAPE1 (111) | 40 | 2.5–80 |
 NPM1 (111) | 70 | 40–90 |