MSK

Biologic Response Modifiers

Musculoskeletal

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Examples

adalimumabetanerceptinfliximabrituximabtocilizumab

Prefix / Suffix: -mab monoclonal antibodies; -cept receptor fusion proteins

Physiology

Biologic response modifiers target specific immune signals that drive inflammation. This can reduce autoimmune disease activity but also lowers defense against infection.

Mechanism of Action

They block cytokines such as TNF or IL-6, deplete selected immune cells, or interrupt immune activation depending on the biologic.

Indications

  • Rheumatoid arthritis
  • Psoriatic arthritis
  • Ankylosing spondylitis
  • Inflammatory bowel disease for selected agents
  • Other autoimmune conditions

Side Effects / Adverse Effects

  • Serious infection risk
  • Tuberculosis or hepatitis B reactivation
  • Infusion or injection reactions
  • Malignancy warning for some agents
  • Heart failure worsening with some TNF inhibitors

Contraindications

  • Active serious infection
  • Untreated latent TB
  • Certain demyelinating disease or severe heart failure with TNF inhibitors
  • Live vaccines during therapy

Nursing Considerations

  • Screen for TB and hepatitis before therapy
  • Assess for fever, cough, wounds, or infection before each dose
  • Teach patient to report infection signs early
  • Monitor infusion reactions when IV biologics are given
  • Keep vaccines updated before starting therapy when possible

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Disclaimer: PharmPal Nurse is for education only and is not medical advice. Do not use it to diagnose, treat, prescribe, or make patient-care decisions; always verify with current drug references, your instructor, facility policy, and a licensed provider. In emergencies, call local emergency services.