ボリコナゾールによる肝機能障害の臨床経過と危険因子に関する検討

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  • Clinical Course and Risk Factors for Voriconazole-induced Hepatotoxicity

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Hepatotoxicity associated with administration of voriconazole (VRCZ) is a major treatment-related adverse event and in some cases requires discontinuation of therapy. This study aimed to investigate the clinical course and risk factors for VRCZ-induced hepatotoxicity.<br>Demographic and laboratory data were retrieved retrospectively from the medical records of 66 Japanese patients who underwent VRCZ treatment. VRCZ-induced hepatotoxicity was defined as an abnormal increase in liver function tests.<br>VRCZ-induced hepatotoxicity was observed in 30 patients (45%), with 11 (37%) of these patients needing to discontinue the drug. Most of the events were observed within 1 to 2 weeks after the first dose of VRCZ. Of the liver function tests, an abnormal increase in γ-glutamyl transferase tended to occur earlier than changes in the other tests (ie, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, and total bilirubin). Multiple logistic regression analysis showed that the trough concentration of VRCZ was a risk factor for hepatotoxicity (adjusted odds ratio = 2.89, 95%CI 1.49-5.59, P = 0.002). Based on this result, a VRCZ trough concentration < 4 μg/mL was considered to be the target for minimizing the risk of developing hepatotoxicity. After discontinuation of VRCZ in patients who developed hepatotoxicity, every liver enzyme abnormality improved within approximately 1 week.<br>In conclusion, this study shows that VRCZ-induced hepatotoxicity may occur early after the initiation of VRCZ therapy. We therefore recommend appropriate adjustments of the starting dose and frequent liver function tests in patients treated with VRCZ, especially during the first 2 weeks.

収録刊行物

  • 医療薬学

    医療薬学 41 (1), 1-10, 2015

    一般社団法人日本医療薬学会

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