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Int J Hematol. 2013 Aug;98(2):231-6. doi: 10.1007/s12185-013-1396-7. Epub 2013 Jul 16.

Micafungin for empirical antifungal therapy in patients with febrile neutropenia: multicenter phase 2 study.

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  • 1Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan.


Empirical antifungal therapy is the current standard of care for patients with febrile neutropenia unresponsive to broad-spectrum antimicrobials. Although a number of antifungal agents are currently available, the need remains for effective but less toxic alternatives for this indication. We therefore conducted a phase 2 study of micafungin for 80 patients with hematologic diseases who were suffering from persistent or recurrent fever after at least 96 h of antibacterial therapy. The patients were treated with micafungin at a fixed dose of 150 mg/day. Of the 78 evaluable patients, 54 (69 %) achieved defervescence by the time of neutrophil recovery, and 56 (72 %) completed the treatment in accordance with the provision of the protocol. Four patients developed invasive fungal infection, nine changed antifungal therapy because of lack of efficacy, and three discontinued micafungin because of drug-related adverse events. Based on the composite end point taking account of these, the overall treatment success rate was 60 %, with the lower limit of a 90 % confidence interval (50.3 %) exceeding the predefined threshold success rate (50 %). These findings show the efficacy and safety of micafungin for empirical antifungal therapy in patients with persistent or recurrent febrile neutropenia, warranting further investigation of this drug in a phase 3 study.

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