Table 4 Comparison of positive and negative results on whole sections and tissue microarrays.
| Nuclear localisation | Cytoplasmic localisation | Membrane localisation | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Oestrogen receptor | Progesterone receptor | p27 | AIB1 | COX2 | Bcl2 | pS2 | HER‐2 | EGFR | IGF‐IR | |
| Concordance (%) | 96 | 93 | 87 | 96 | 91 | 91 | 86 | 100 | 100 | 91 |
| Discordance (%) | 4 | 7 | 13 | 4 | 9 | 9 | 14 | 0 | 0 | 9 |
AIB1, oestrogen receptor co‐regulator amplified in breast cancer 1; COX2, cyclooxygenase 2; EGFR, epidermal growth factor receptor; IGF‐IR, insulin‐like growth factor I receptor.