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Type II anti-CD20 monoclonal antibody

Obinutuzumab (Specialist drug)

Brand names: Gazyvaro

Adult dose

Dose: Specialist initiation only — refer to BNF/SmPC
Route: IV
Frequency: per protocol

Clinical pearls

  • CLL, follicular lymphoma; specialist haem-onc
  • Screen HBV before starting; pre-medicate with steroid + paracetamol + antihistamine

Contraindications

  • Hypersensitivity to murine proteins
  • Active severe infection

Side effects

  • Severe infusion reactions (esp. cycle 1 — pre-medicate)
  • Tumour lysis syndrome
  • Cytopenias
  • HBV reactivation
  • PML (rare)

Interactions

  • Live vaccines

Monitoring

  • FBC
  • LFTs
  • HBsAg
  • Tumour lysis screen

Reference: BNF; NICE TA343/TA513; SmPC; https://bnf.nice.org.uk/drugs/obinutuzumab-specialist-drug/. Verify against your local formulary and the latest BNF before prescribing.

Related

Curated clinical cross-links plus same-class fallbacks.