Overview
HER2-positive cancer overexpresses HER2 protein. Responds to targeted therapy.
Symptoms
- •Lump
- •Rapid growth
- •Lymph node swelling
Stages
Stage IStage IIStage IIIStage IV
Diagnosis
- ✓IHC/FISH (HER2+)
- ✓Biopsy
Treatments
- →Trastuzumab
- →Pertuzumab
- →T-DM1
- →Chemotherapy
- →Surgery
Risk Factors
⚠️Age
⚠️Family history
Key Facts
- ℹ️20% of breast cancers
- ℹ️Excellent response to Herceptin
ICD-10: C50.9 | Prevalence: yaygın
Last updated: 11/9/2025