We report a case of an acute anaphylactic reaction to intravenous cyclophosphamide in a patient with systemic lupus erythematosus. Skin testing for reactivity to cyclophosphamide and one of its metabolites, 4-hydroperoxycyclophosphamide, was performed on the patient and on 6 controls. The patient exhibited positive skin test responses; all controls had negative responses. The results suggest an acute hypersensitivity reaction related to sensitivity to cyclophosphamide and to 4-hydroperoxycyclophosphamide, through a shared antigenic determinant or dual sensitization.
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Univ Tehran Med Sci, Sch Pharm, Dept Clin Pharm, Tehran, IranUniv Tehran Med Sci, Sch Pharm, Dept Clin Pharm, Tehran, Iran
Hosseini, Mahnaz Sadat
Namazi, Soha
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Univ Tehran Med Sci, Sch Pharm, Dept Clin Pharm, Tehran, Iran
Univ Tehran Med Sci, Res Ctr Rat Use Drugs, Tehran, IranUniv Tehran Med Sci, Sch Pharm, Dept Clin Pharm, Tehran, Iran