Análise de custo-utilidade da gosserrelina no tratamento de pacientes com leiomioma: uma perspectiva do Sistema Único de Saúde / Cost-utility analysis of goserelin in the treatment of patients with leiomyoma: a perspective from the Unified Health System

Objetivos: Gosserrelina é indicada para mulheres com leiomioma, por reduzir o risco associado às complicações clínicas. Este trabalho realizou uma análise de custo-utilidade comparando o uso e o não uso de gosserrelina em pacientes com leiomioma sob a perspectiva do Sistema Único de Saúde. Métodos: Um modelo de árvore de decisão foi estruturado para reproduzir o impacto clínico e econômico do uso de gosserrelina antes da miomectomia, cujo comparador seria o não uso de gosserrelina em pacientes elegíveis. Foram considerados: custos médicos diretos e eventos clínicos como complicações intra-hospitalares e tempo de internação. A razão de custo-utilidade incremental é representada pelo custo incremental da gosserrelina por anos de vida ajustado pela qualidade (QALY). Resultados: Em um cenário em que o acesso à gosserrelina é de 51% das pacientes, o custo incremental foi de R$ 629,08. Pacientes no grupo gosserrelina apresentaram um incremento de 0,0261 no QALY. A razão de custo-utilidade incremental foi de R$ 24.019,26 por QALY, ficando abaixo do limiar adotado pelo Ministério da Saúde. Ao variar o percentual de pacientes que recebem gosserrelina para 80% antes de um procedimento cirúrgico, houve um aumento de QALY para 0,5013, reduzindo custos de complicações e a razão de custo-utilidade incremental para R$ 10.581,07 por QALY. No cenário em que 100% das pacientes utilizam gosserrelina, há um aumento de QALY para 0,8290, reduzindo custos de complicações e a razão de custo-utilidade incremental para R$ 10.288,28 por QALY. Conclusão: O uso de gosserrelina possui custo-utilidade favorável, considerando os parâmetros utilizados nesta modelagem econômica. Quando o acesso à gosserrelina é maior, há um decremento expressivo no custo por QALY.

Objectives: Goserelin is indicated for women with leiomyoma to reduce the risk associated with clinical complications. This study conducted a cost-utility analysis comparing the use and non-use of goserelin in patients with leiomyoma from the perspective of the Brazilian Unified Health System. Methods: A decision tree model was structured to reproduce the clinical and economic impact of using goserelin before myomectomy, compared to not using it in eligible patients. Direct medical costs and clinical events such as in-hospital complications and length of stay were considered. The incremental cost-utility ratio is represented by the incremental cost of goserelin per quality-adjusted life year (QALY). Results: In a scenario where access to goserelin is 51% of patients, the incremental cost was R$ 629.08. Patients in the goserelin group showed an increase of 0.0261 in QALY. The incremental cost-utility ratio was R$ 24,019.26 per QALY, below the threshold adopted by the Ministry of Health. When the percentage of patients receiving goserelin was increased to 80% before surgery, there was an increase in QALY to 0.5013, reducing complication costs and the incremental cost-utility ratio to R$ 10,581.07 per QALY. In the scenario where 100% of patients use goserelin, QALY increased to 0.8290, reducing complication costs and the incremental cost-utility ratio to R$ 10,288.28 per QALY. Conclusions: The use of goserelin has a favorable cost utility, considering the parameters used in this economic modeling. When access to goserelin is higher, there is a significant decrease in the cost per QALY.

FTY720 induces apoptosis in B16F10-NEX2 murine melanoma cells, limits metastatic development in vivo, and modulates the immune system

OBJECTIVE: Available chemotherapy presents poor control over the development of metastatic melanoma. FTY720 is a compound already approved by the Food and Drug Administration for the treatment of patients with multiple sclerosis. It has also been observed that FTY720 inhibits tumor growth in vivo (experimental models) and in vitro (animal and human tumor cells). The aim of this study was to evaluate the effects of FTY720 on a metastatic melanoma model and in tumor cell lines. METHODS: We analyzed FTY720 efficacy in vivo in a syngeneic murine metastatic melanoma model, in which we injected tumor cells intravenously into C57BL/6 mice and then treated the mice orally with the compound for 7 days. We also treated mice and human tumor cell lines with FTY720 in vitro, and cell viability and death pathways were analyzed. RESULTS: FTY720 treatment limited metastatic melanoma growth in vivo and promoted a dose-dependent decrease in the viability of murine and human tumor cells in vitro. Melanoma cells treated with FTY720 exhibited characteristics of programmed cell death, reactive oxygen species generation, and increased β-catenin expression. In addition, FTY720 treatment resulted in an immunomodulatory effect in vivo by decreasing the percentage of Foxp3+ cells, without interfering with CD8+ T cells or lymphocyte-producing interferon-gamma. CONCLUSION: Further studies are needed using FTY720 as a monotherapy or in combined therapy, as different types of cancer cells would require a variety of signaling pathways to be extinguished. .