Study of Rasburicase as Treatment or Prevention of Hyperuricemia Associated With Tumor Lysis Syndrome in Patients With Relapsed or Refractory Lymphoma, Leukemia, or Solid Tumor Malignancy

This is an open-label, multi-center study with 2 arms. The primary objective is to assess the response to treatment with rasburicase in 2 populations of adult and pediatric patients with lymphoma/leukemia/solid tumor malignancies, those previously treated with a uricolytic agent, and those not previously treated with a uricolytic agent at their first relapse or refractory disease.