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Table 6 Concordance of consensus HER2 FISH results of between core needle biopsy and surgically resected specimens.

From: HER2 testing on core needle biopsy specimens from primary breast cancers: interobserver reproducibility and concordance with surgically resected specimens

HER2/CEP17ratio for surgically resected specimens Number of tumors
  HER2/CEP17ratio for CNB specimens
  > 2.2 1.8 to 2.2 <1.8
Higher than 2.2 11 0 1
1.8 to 2.2 0 0 0
<1.8 1 0 12
% agreement = 92%    
  1. The judgments were performed according to the 2007 ASCO/CAP guideline. For two tumors, data on CNB and/or surgically resected specimens were not available.