Answer
It can increase susceptibility to infection because it temporarily lowers IgG. Report infection symptoms to the clinical team, particularly if they are severe or worsening.
Sources for this answer
- Vyvgart 1000 mg solution for injection in pre-filled syringe — Current selected SmPCemc · Summary of Product Characteristics
- Vyvgart 20 mg/mL concentrate for solution for infusion — Current selected SmPCemc · Summary of Product Characteristics