Cost-effectiveness analysis of rasburicase over standard of care for the prevention and treatment of tumor lysis syndrome in children with hematologic malignancies in China.

Aims: To conduct a lifetime cost-effectiveness analysis (CEA) of rasburicase compared with standard of care (SOC) for tumor lysis syndrome (TLS) in children with hematologic malignancies from the Chinese healthcare system perspective. Materials and methods: The CEA was performed using a decision tree model with a lifetime horizon. The model explores the cost-effectiveness of rasburicase vs SOC for both preventing TLS and treating established TLS among pediatric patients with acute myeloid leukemia (AML), acute lymphoid leukemia (ALL), and non-Hodgkin's lymphoma (NHL). Both the prophylaxis-use model and treatment-use model incorporate long-term health states of the diseases: survival without TLS and death. The efficacy data of rasburicase and SOC were obtained from published literature. Drug costs, healthcare resource utilization (HRU), and adverse event (AE) management costs were obtained via a published study with clinical experts. Costs in US dollar and quality-adjusted life year (QALY) are reported, and incremental cost-effectiveness ratios (ICERs) were also calculated. Uncertainties due to parameter fluctuations in the model were assessed through one-way sensitivity analysis and probabilistic sensitivity analysis (PSA).

Results

During TLS prevention, compared with SOC, the ICER of rasburicase treatment in China are $17,580.04/QALY, $5,783.45/QALY, and $5,391.00/QALY for pediatric patients with AML, ALL, and NHL, respectively. For the established TLS treatment, compared with SOC, the ICERs of rasburicase treatment are $2,031.18/QALY, $1,142.93/QALY, and $990.37/QALY for pediatric patients with AML, ALL, and NHL, respectively. Limitations: The clinical data for SOC are based on the published study in China, and the rasburicase prevention or treatment failure rate was either calculated based on the risk ratio or directly from the clinical study among non-Chinese pediatric patients. Another study limitation was the lack of utility data for pediatric patients with TLS and without TLS. Thus, the utility scores of pediatric cancer survivors were used as an alternative.

Conclusion

Rasburicase is estimated to be a cost-effective alternative to SOC in the prevention and treatment of TLS among Chinese pediatric patients with AML, ALL, and NHL.