Fig. 1From: HER2 amplification by next-generation sequencing to identify HER2-positive invasive breast cancer with negative HER2 immunohistochemistryPercentages of HER2 FISH in different HER2 IHC groups (scores range from 0 to 3 +). HER2 IHC negative (score of 0) had the lowest percentage (1.5%), and HER2 IHC positive (score of 3 +) had the highest percentage (91.4%)Back to article page