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Table 5 Frequency of HER-2, ER and PR expression by histological subtype

From: Correlation of HER-2 over-expression with clinico-pathological parameters in Tunisian breast carcinoma

Histologic subtype n (%) ER+ (%) PR+ (%) HER2-+ (%)
Ductal NOS 130 (83.3) 61.1 53.8 16.8
Inflammatory 8 (23,5) 37,5 37.5 50
Lobular 6 (17,6) 50 50 16.7
Mucinous 5 (14,7) 60 60 0
Endocrine 3 (8,8) 66.7 33.3 33.3
Metaplastic 1 (2,9) 100 100 0
Medullary 1 (2,9) 0 0 0
Oncocytic 1 (2,9) 0 0 100
  1. NOS: not otherwise specified;HER-2: Human epidermal growth factor receptor 2; ER: Estrogen receptor; PR: Progesterone receptor.