Abstract
Background
Response rates for candidemia treated with standard-dose fluconazole (400 mg/day) are approximately 70%. Higher doses of fluconazole have been recommended for susceptible dose-dependent Candida isolates. Herein, we describe the outcome of 20 patients with solid tumors and candidemia treated with high-dose fluconazole (HDF) at The University of Texas M.D. Anderson Cancer Center (1998–2002).
Patients and methods
Patients were identified either by searching the microbiology laboratory database or through direct referral from primary oncology services to the Infectious Diseases Consultative Services. A retrospective review of cases was performed. HDF was defined as ≥600 mg/day.
Results
Five patients were treated with 600 mg/day, whereas 15 patients received 800 mg/day. Only one patient was neutropenic. The median APACHE II score at the onset of candidemia was 12 (range 6–24). The most common species identified were Candida albicans (eight patients, 40%) and Candida parapsilosis (seven patients, 35%). Of 19 patients whose quantitative data were available, eight (42%) had high-grade candidemia [≥200 colony forming units (CFU)/ml]. Fifteen (83%) of 18 isolates were fluconazole susceptible, and two (both Candida glabrata) were fluconazole resistant (MIC 64 each) in vitro. Nineteen patients (95%) responded to HDF therapy. The only HDF failure occurred in a patient with C. glabrata (MIC 64.0) infection. The other patient with C. glabrata (MIC 64.0) infection responded to HDF. Central venous catheters were removed from all patients with ≥10 CFU/ml candidemias. All patients with high-grade candidemias responded to HDF. The median duration of HDF therapy was 16 (range 6–42) days. No significant toxicity occurred.
Conclusions
Although our data are limited, HDF appears to be well tolerated and may be associated with higher response rates than standard-dose fluconazole in a selected group of patients with solid tumors and candidemia caused by species that are susceptible to this triazole.
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Torres, H.A., Kontoyiannis, D.P. & Rolston, K.V.I. High-dose fluconazole therapy for cancer patients with solid tumors and candidemia: an observational, noncomparative retrospective study. Support Care Cancer 12, 511–516 (2004). https://doi.org/10.1007/s00520-004-0601-x
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DOI: https://doi.org/10.1007/s00520-004-0601-x