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    Therapeutic Drug Monitoring and Dose Adjustment of Posaconazole in Adult Patients with Acute Myeloid Leukemia: A Single-Center Experience

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    Author
    Hummert, Shelly
    Green, Myke R.
    Affiliation
    College of Pharmacy, The University of Arizona
    Issue Date
    2014
    Keywords
    monitoring
    posaconazole
    patients
    acute myeloid leukemia
    Therapeutic
    MeSH Subjects
    Leukemia, Myeloid, Acute
    Triazoles
    Advisor
    Green, Myke R.
    
    Metadata
    Show full item record
    Rights
    Copyright © is held by the author.
    Collection Information
    This item is part of the Pharmacy Student Research Projects collection, made available by the College of Pharmacy and the University Libraries at the University of Arizona. For more information about items in this collection, please contact Jennifer Martin, Associate Librarian and Clinical Instructor, Pharmacy Practice and Science, jenmartin@email.arizona.edu.
    Publisher
    The University of Arizona.
    Abstract
    Specific Aims: Evaluate serum posaconazole concentrations following dose adjustment in response to subtherapeutic serum concentrations. Determine optimal dose adjustment schema and identify toxicity with doses above 600 mg daily (e.g.: 200 mg per os three times daily). Methods: The health records were reviewed for 29 patients ≥ 18 years with acute myeloid leukemia over a four-year period. Participants initially received posaconazole 200 mg per os three times daily as prophylaxis and required at least one dose adjustment secondary to a subtherapeutic posaconazole serum concentration. Patients were stratified by posaconazole dosing following dose adjustment (A=200mg QID, B=300mg TID, C=400 mg TID, D=400 QID). Main Results: There was a statistically significant increase in posaconazole serum concentration in each group compared to baseline serum concentration, aside from group C (group A and B P<0.001, group C P=0.236, and group D P=0.0076). The majority of participants in 3 of the 4 groups reached therapeutic serum concentration (A=0.87, B=0.76, D=0.80) whereas group C had a serum posaconazole concentration on average below therapeutic range (0.51). There was no significant difference between the four groups in regards to renal function (p=0.35) or hepatic function (AST p=0.676, ALT p=0.877, total bilirubin p=0.097). Conclusion: A dose increase led to an increase in posaconazole serum concentration except for the dosing regimen of 400 mg three times daily. However, the study is limited by a small patient population, an unequal number of patients in each group, and potentially by poor absorption of posaconazole suspension. Further research is required to expand on these findings.
    Description
    Class of 2014 Abstract
    Collections
    Pharmacy Student Research Projects

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