BRCA1 immunostaining in BRCA1 negative cases
| Familial cases (n = 16) | Sporadic cases (n = 22) | |||||||
|---|---|---|---|---|---|---|---|---|
| Nuclear staining | Cytoplasmic staining | Nuclear staining | Cytoplasmic staining | |||||
| Antibody | Positive | Negative | Positive | Negative | Positive | Negative | Positive | Negative |
| D-20 | 16 | 16 | – | – | 22 | 22 | – | – |
| I-20 | 11 | 5 | 15 | 1 | 9 | 13 | 22 | – |
| K-18 | 16 | 5 | 11 | – | 22 | 2 | 20 | – |
| Ab-1 | 6 | 10 | – | 16 | 11 | 11 | 1 | 21 |