Review Article

Somatic Mutations in HER2 and Implications for Current Treatment Paradigms in HER2-Positive Breast Cancer

Figure 2

The mechanism of action of different drugs (italics and striped) on HER receptor signaling pathways. HER: human epidermal growth factor receptor; MAPK: mitogen-activated protein kinase; PI3K: phosphatidylinositol 3-kinase; Akt: serine/threonine kinase Akt, also known as PKB (protein kinase B); ECD: extracellular domain; TMD: transmembrane domain; TKD: tyrosine kinase domain.