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Drug Guide
 
 

Trastuzumab

 
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    IV infusion / Subcut
    Trastuzumab
    Herceptin 
     
    Inhibits ligand-independent HER signalling
  • Mechanism of Action

  • A monoclonal antibody directed against the HER2 receptor, which is involved in cell signalling and is overexpressed in certain cancers. Inhibition of HER2 signalling pathways results in cell cycle arrest; the monoclonal antibody also mediates antibody-dependent cell-mediated cytotoxicity.

Clinical Use

  • Indications
  • HER2 positive breast cancer
  • HER2 positive advanced gastric cancer
  • Contraindications

  • Left ventricular dysfunction, as evidenced by an LVEF <45%, or symptomatic heart failure.
  • Adverse Effects
  • Cardiac dysfunction
  • Bone marrow suppression – leucopaenia, anaemia, thrombocytopaenia
  • Immunosuppression (susceptibility to infection)
  • Nausea / vomiting / diarrhoea
  • Abdominal pain
  • Dyspnoea / wheeze
  • Peripheral neuropathy
  • Arthralgias / myalgias
  • Headache
  • Dizziness
  • Flushing
  • Weight loss
  • Insomnia
  • Rash
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