Answer
Yes, Stevens–Johnson syndrome and toxic epidermal necrolysis are listed as very rare adverse effects of cyclophosphamide, meaning fewer than 1 in 10,000.
Sources for this answer
- Cyclophosphamide Seacross 500 mg powder for solution for injection/infusionSeacross Pharmaceuticals Ltd · emc · SmPC §4.8 Undesirable effects · Version 2Document updated
Sources checked