The Role of Plasma Trough Concentration of Voriconazole and Voriconazole N-Oxide in Its Hepatotoxicity in Adult Patients
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Objective: Hepatotoxicity is an important cause of early withdrawal of voriconazole (VCZ). The role of the plasma trough concentration of VCZ (C) in hepatotoxicity is confusion. VCZ N-oxide is the primary metabolite of VCZ in plasma. We investigated the role of VCZ C and plasma trough concentration of VCZ N-oxide (C) in hepatotoxicity in adult patients.
Materials And Methods: This was a prospective study. VCZ C and C were measured using liquid chromatography-tandem mass spectrometry.
Results: In total, 601 VCZ C and C from 376 adult patients were included. The percentage of grade 1 or higher adverse events for ALP, ALT, AST, γ-GT, and TBIL were 35.4%, 21.0%, 30.1%, 56.2%, and 22.2%, respectively. Compared with younger adult patients, elderly patients (≥65 years) had a higher rate of grade 1 or higher adverse events of ALP. In the multivariate analysis, VCZ C was a risk factor for grade 1 or higher adverse events of AST in elderly patients and TBIL in younger adult patients, and VCZ C was a risk factor for grade 1 or higher adverse events of ALT, AST, and TBIL. Results of the receiver operating characteristic curve analysis indicated that when the VCZ C was higher than 4.0 μg/mL, or the VCZ C was lower than 1.7 μg/mL, the incidence of grade 1 or higher adverse events of AST and TBIL increased.
Conclusion: VCZ C and C were associated with liver function-related adverse events. Measurement of VCZ C should be considered for VCZ therapeutic drug monitoring.
Dewangan H, Sharma R, Shah K, Alam P Life (Basel). 2024; 14(11).
PMID: 39598215 PMC: 11595337. DOI: 10.3390/life14111417.