Overview
TNBC lacks ER, PR, HER2 receptors. More aggressive.
Symptoms
- •Rapidly growing lump
- •Skin redness
- •Pain
Stages
Stage IStage IIStage IIIStage IV
Diagnosis
- ✓Biopsy
- ✓IHC (ER/PR/HER2 negative)
Treatments
- →Chemotherapy
- →Surgery
- →Radiation
- →PARP inhibitors (BRCA+)
Risk Factors
⚠️BRCA1
⚠️Young age
⚠️African ancestry
Key Facts
- ℹ️15% of breast cancers
- ℹ️Higher in young, BRCA1 carriers
ICD-10: C50.9 | Prevalence: yaygın
Last updated: 11/9/2025