| Established and in routine clinical use | Potential for clinical use; need refinement of scoring systems or antibodies | Research interest, less likely to be used clinically |
| Oestrogen receptor | Epidermal growth factor receptor | P53 |
| Progesterone receptor | Ki-67 (MIB-1) | Cyclin E, cyclin D1, p21, p27 |
| HER2 | Topoisomerase II alpha | Bcl2, bax, bcl-x, survivin |