Breast cancer

Mechanism of action

  • Inhibits Osteoclastic Bone Resorption
  • Prevent treatment induced osteoporosis, helps with bony pain
  • Inhibits development of bony metastases

Adjuvant Effect (Anti-cancer benefits are small)

  • May directly affect tumour cells via apoptosis and inhibiting tumour cell growth
  • Small disease-free survival advantages seen in post-menopausal women

Indications:

  • Osteoporosis (T-score ≤ -2.5) or history of fragility fracture
  • Post-Menopausal women receiving adjuvant systemic therapy (with mod-to-high risk distant recurrence), regardless of bone-density, to reduce risk of recurrence

Side Effects

  • Hypocalcaemia, renal toxicity, GI upset
  • Rarely: Osteonecrosis of the Jaw (0.7%)