Table 2 Changes in biological marker status (positive rates) between primary breast tumors and matched recurrent lesions
Biological Markers | Primary | Recurrence | p value |
|---|---|---|---|
Positive rate (%) | |||
Estrogen Receptor | 62 (63.9) | 56 (57.7) | 0.46 |
Progesterone Receptor | 55 (56.7) | 42 (43.3) | 0.08 |
p53 | 22 (22.7) | 24 (24.7) | 0.87 |
HER2 | 22 (22.7) | 30 (30.9) | 0.26 |
Ki-67 Index | 12 (12.4) | 24 (24.7) | 0.012 |
(Ki-67: mean ± S.D.(%) | 29.1 ± 18.5% | 36.3 ± 21.0% | < 0.0001 ) |