Krystexxa Disease Interactions

The antihyperuricemic agents pegloticase and rasburicase are contraindicated in patients deficient in glucose-6-phosphate-dehydrogenase (G6PD), as these have shown to cause severe hemolytic reactions and methemoglobinemia. Patients at high risk of G6PD deficiency such as patients of African, Mediterranean or Southern Asian ancestry, should be screened prior to starting treatment. Treatment with any of these drugs should be discontinued immediately and permanently in any patient developing hemolysis or methemoglobinemia.

Pegloticase has not been formally studied in patients with congestive heart failure, and some patients in clinical trials have experienced exacerbation. Caution should be exercised when using pegloticase in these patients and close monitoring following the infusion is recommended.