Primary Outcome Measures:
- To assess the uricolytic response to rasburicase treatment [ Time Frame: 5 weeks (3 to 7 days of treatment, with follow-up of 4 weeks after the last study drug injection) ] [ Designated as safety issue: No ]
Secondary Outcome Measures:
- To evaluate tumor lysis risk factors, treatments for tumor lysis syndrome and complications of treatment in patients treated prophylactically or therapeutically for tumor lysis syndrome [ Time Frame: 5 weeks (3 to 7 days of treatment, with follow-up of 4 weeks after the last study drug injection) ] [ Designated as safety issue: Yes ]
Intervention Details:
Drug: urate oxidase
First injection of Rasburicase will be done the day of initiation of chemotherapy, or the day before, according to hyperuricemia. Additional doses are permitted q12h during the first 72 hours of chemotherapy if hyperuricemia persists or subject is considered to be at significant risk of tumor lysis complications.