Comparative study of prophylaxis with high and low doses of voriconazole in children with malignancy

Document Type : Original Articles

Authors

1 Infectious Diseases Specialist, Сhief of Infection Control Department; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

2 Scientific Department, Junior Researcher, Laboratory of Genetic Biotechnology; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

3 Scientific Department, Researcher, Laboratory of Genetic Biotechnology; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

4 Biologist, Group of Molecular Biology and Transplant Processing; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

5 Leading Engineer of Automated Control Systems Department; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

6 Scientific Department, Researcher, Laboratory of Molecular and Genetic Research; Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Borovlyany, Minsk region, Republic of Belarus

7 Corresponding Member of the National Academy of Sciences of Belarus, Scientific Department, Senior Researcher, Laboratory of Cellular Biotechnology and Cytotherapy; Belarusian Research Center for Pediatric Oncology, Hematology and

10.18502/cmm.6.4.5331

Abstract

Background and Purpose:Children with acute myeloid leukemia and relapses of leukemia are at high risk of developing fungal infections and need antifungal prophylaxis. This study aimed to compare the efficacy and toxicity of two different dosage regimens of voriconazole (VRCZ) during prophylactic administration in children with malignancyand neutropenia.
Materials and Methods:This prospective study was conducted at the Belarusian Research Center for Pediatric Oncology, Hematology, and Immunology fromMay 2017 to December 2019. The present study included 21 Caucasian patients with malignant hematological diseases (20 patients with acute myeloid leukemia and relapses of leukemia and 1 patient with Non-Hodgkin's lymphoma) aged 2-18 years. All patients were randomly divided into two groups that received different dosage regimens of VRCZ prophylaxis. Patients in the “high-dose” group received VRCZat a dose of 9 mg/kg twice a day PO, or 8 mg/kg twice a day IV without a loading dose (children of 2-11 and adolescents and of 12-14 years old with
Results:In the high-dosegroup (n=20 episodes of prophylaxis), invasive fungal infections (IFI) signs were recorded in one (5%) case. In the low-dose group (n=20 episodes), IFI signs were observed in six (30%) cases (P=0.0375). The residual serum concentration was significantly higher in patients who received high doses of VRCZ (p <0.0001). Most patients with IFI (n=6, 86%) had a mean value (i.e.,
Conclusion:The likelihood of IFI was significantly lower in children who prophylactically received VRCZ in high doses (P=0.0375) and had ≥ 0.74 μg/ml residual serum concentration of the medication (P=0.0258). Residual serum concentration of VRCZ reached a plateau by day sixth of the treatment. In children, the dosage was the only highly significant factor affecting the metabolism of VRCZ.

Keywords

References

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Current Medical Mycology
Volume 6, Issue 4
December 2020
Pages 27-34

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History

  • Receive Date: 29 June 2020
  • Accept Date: 08 November 2020
  • Publish Date: 01 December 2020

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