Fig. 2From: Landscape of HER2-low metastatic breast cancer (MBC): results from the Austrian AGMT_MBC-RegistryFrequencies of the different expression levels of HER2 in dependency of the hormone receptor (HR) status. HER2+ = HER2-positive (immunohistochemically [IHC] 3+ or IHC 2+ and ISH+); HER2-low = low HER2 expression (IHC 1 or IHC 2+ and ISH−); HER2-0 = completely HER2-negative (IHC 0)Back to article page