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Table 6 Frequency of HER-2 expression for lymph-node status by joint ER/PR expression

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

  No N+
  HER-2 HER-2
  Negative Positive Total Negative Positive Total
ER- PR- 27(90%) 3 (10%) 30 7 (35%) 13 (65%) 20
ER- PR+ 7 (100%) 0 (0%) 7 1 (16.7%) 5 (83.3%) 6
ER+ PR- 14 (100%) 0(0%) 14 7 (77.8%) 2 (22.2%) 9
ER+ PR+ 38 (97,4%) 1(2.6%) 39 25 (86,2%) 4 (13,8%) 29
Total 86 (95.55) 4(3.45) 90 40 (62.5) 24 (37.5) 64
  1. N0: without lymph node involvement; N+: with lymph node involvement; HER-2: Human epidermal growth factor receptor 2; ER: Estrogen receptor; PR: Progesterone receptor.