Abstract
Human epidermal growth factor receptor 2 (HER2) overexpression is seen in 25% of breast
cancers. Patients with HER2-positive breast cancer have aggressive disease and inferior
survival. HER2 overexpression is assessed by immunohistochemistry or fluorescent in situ hybridization-based methods. Trastuzumab has shown to improve survival in HER2-positive
breast cancer. It is recommended in patients with >T1c for 1-year duration in adjuvant
setting, preferably given concurrently with taxane.
Keywords
Breast cancer - human epidermal growth factor receptor 2-positive disease - trastuzumab