Answer
Routine systemic steroids before starting may interfere with its immune activity, but steroids are commonly used when clinically necessary to control immune-related reactions or support combination treatment.
Sources for this answer
- KEYTRUDA 25 mg/mL concentrate for solution for infusion — Current selected SmPCemc · Summary of Product Characteristics
- KEYTRUDA 395 mg solution for injection — 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.