Immunohistochemical characteristics of 30 breast samples
| Tumour type | ER-α66 [95% CI] | PR [95% CI] | Her-2/neu* [95% CI] | EGFR† [95% CI] | ER-α36 [95% CI] |
| PAC | 0/19 (0%) [0.13 to 16.84] | 0/19 (0%) [0.13 to 16.84] | 10/19 (52.6%) [31.53 to 72.80] | 17/19 (89.5%) [68.30 to 96.79] | 18/19 (94.7%) [75.13 to 98.77] |
| ACC | 0/11 (0%) [0.21 to 26.46] | 0/11 (0%) [0.21 to 26.46] | 0/11 (0%) [0.21 to 26.46] | 7/11 (63.6%) [34.89 to 84.83] | 8/11 (72.7%) [42.81 to 90.08] |
↵* Her-2/neu protein positivity defined as 3+ score by immunohistochemistry.
↵† EGFR protein positivity defined as a membranous staining if a proportion of stained cells exceeded 1% at any intensity.
ER, oestrogen receptor; PR, progesterone receptor; EGFR, epidermal growth factor receptor; PAC, pure apocrine carcinoma; ACC, adenoid cystic carcinoma.