Answer
EGFR is involved in normal skin and nail tissues, so blocking it commonly causes acne-like rash, dryness, itching and inflammation around the nails.
Sources for this answer
- Rybrevant (amivantamab) 1600mg solution for injection — Current selected SmPCemc · Summary of Product Characteristics
- Rybrevant (amivantamab) 350mg concentrate for solution for infusion — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.