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Table 1 Changes in ER, PR and Ki67 in paired core biopsy/resection specimens (n = 42 women)

From: A prospective comparison of ER, PR, Ki67 and gene expression in paired sequential core biopsies of primary, untreated breast cancer

  Number of patients Change from <4 to ≥4 Change from ≥4 to < 4 Rise of fall in score, but not crossing threshold 4 No change between samples
ER premenopausal 15 0 3 4 8
ER postmenopausal 26 0 1 14 11
PR premenopausala 15 1 4 4 6
PR postmenopausala 16 1 3 6 6
   Change from <20 % to ≥20 % Change from ≥20 % to <20 % Rise or fall in Ki67, but not crossing 20 % No change between samples
Ki67 premenopausal 15 2 1 8 rise 4
Ki67 postmenopausalb 25 1 4 3 rise + 11 fall 6
  1. Notes
  2. aPR not assessed in the diagnostic core from one premenopausal and nine postmenopausal women
  3. bKi67 not assessed in the diagnostic core from two postmenopausal patients