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Drug interactions

Efgartigimod / hyaluronidase sc + Nivolumab

Severity: Moderate

Efgartigimod / hyaluronidase sc and Nivolumab: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Subcutaneous efgartigimod blocks the neonatal Fc receptor, which normally protects IgG antibodies from degradation. Nivolumab is an IgG4 antibody, so its clearance could increase and exposure fall, potentially weakening antitumor effect. The clinical significance is uncertain.

What this interaction means in plain words

Efgartigimod / hyaluronidase sc and Nivolumab can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Evidence level: Low

Why it happens

Efgartigimod blocks FcRn-mediated IgG recycling, which may accelerate catabolism of IgG-based nivolumab.

What to do

Avoid combining where possible, or monitor tumor response closely if efgartigimod is necessary. Involve oncology and neurology specialists in weighing alternatives.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Efgartigimod / hyaluronidase sc with Nivolumab?

MediHelp rates the interaction as moderate. Efgartigimod / hyaluronidase sc and Nivolumab can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Subcutaneous efgartigimod blocks the neonatal Fc receptor, which normally protects IgG antibodies from degradation. Nivolumab is an IgG4 antibody, so its clearance could increase and exposure fall, potentially weakening antitumor effect. The clinical significance is uncertain.

How serious is the interaction between Efgartigimod / hyaluronidase sc and Nivolumab?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining where possible, or monitor tumor response closely if efgartigimod is necessary. Involve oncology and neurology specialists in weighing alternatives.

What other medicines interact with Nivolumab?

MediHelp also lists interactions of Nivolumab with, for example, Thalidomide, Dexamethasone-tobramycin, Dexamethasone. The full list is on the Nivolumab page.

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