Answer
Yes, anaphylaxis or anaphylactoid reactions can occur after the first Orencia abatacept infusion and can be life-threatening, and fatal anaphylaxis following the first infusion has been reported.
Sources for this answer
- ORENCIA 250 mg powder for concentrate for solution for infusionBristol Myers Squibb Pharmaceuticals limited · emc · SmPC §4.4 Special warnings and precautions for use · Version 27Document updated
Sources checked