Cost-effectiveness of using granulocyte colony-stimulating factor in the treatment of uterine body leiomyosarcomas. A retrospective analysis

Background. The main approach in the treatment of patients with uterine leiomyosarcoma is surgery followed by chemotherapy, which is the basis of treatment. Febrile neutropenia (FN) is a life-threatening condition, so the use of granulocyte colony-stimulating factor (G-CSF) after each cycle of chemotherapy in this category of patients remains an integral part. Aim. To evaluate the pharmacoeconomic efficacy of the use of short and long-acting G-CSF forms in a round-the-clock inpatient facility (RIF). Materials and methods. A retrospective analysis of economic expenditures was performed at the Chelyabinsk Regional Clinical Center of Oncology and Nuclear Medicine in the RIF setting for the period from January 2018 to December 2023 for the treatment of 62 patients with high-grade uterine leiomyosarcomas of stage IB–IVA according to the classification of the International Federation of Gynecology and Obstetrics (2009). All patients underwent surgical treatment, complete hysterectomy with appendages, followed by antitumor drug therapy with a high risk of FN. In the economic cost analysis, the treatment regimens gemcitabine 900 mg/m2 on day 1 and day 8 + docetaxel 100 mg/m2 + empegfilgrastim (regimen code sh1207.1) and gemcitabine 900 mg/m2 on day 1 and day 8 + docetaxel 100 mg/m2 + filgrastim (regimen code sh1070) were compared. The costs of clinical blood tests and staying in RIF were also considered. Results. The stay in the RIF was 9 bed days with a long-acting G-CSF regimen and 15 days with a short-acting G-CSF regimen. When using a treatment regimen with filgrastim in 6 patients, the number of bed days increased to 18 due to persistent neutropenia. No FN events were reported. The calculations consisted of the cost of a bed day in the RIF (1,660 rubles) and purchasing of short- and long-acting G-CSF, without the cost of the main therapy. The costs of treating patients with short-acting G-CSF were comparable to those with long-acting G-CSF. Conclusion. The regimen with long-acting G-CSF is effective, easy to use, and cost-effective in RIF settings.