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    Patiromer Lowers Serum Potassium When Taken without Food: Comparison to Dosing with Food from an Open-Label, Randomized, Parallel Group Hyperkalemia Study

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    Author
    Pergola, P.E.
    Spiegel, D.M.
    Warren, S.
    Date
    2017
    Journal
    American Journal of Nephrology
    Publisher
    S. Karger AG
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.1159/000481270
    Abstract
    Background: Patiromer is a sodium-free, nonabsorbed, potassium binder approved for treatment of hyperkalemia. This open-label study compares the efficacy and safety of patiromer administered without food versus with food. Methods: Adults with hyperkalemia (potassium ≥5.0 mEq/L) were randomized (1:1) to receive patiromer once daily without food or with food for 4 weeks. The dosage was adjusted (maximum: 25.2 g/day) using a prespecified titration schedule to achieve and maintain potassium within a target range (3.8-5.0 mEq/L). The primary efficacy endpoint was the proportion of patients with serum potassium in the target range at either week 3 or week 4. Safety was assessed by adverse events (AEs) and laboratory testing. Results: Efficacy was evaluated in 112 patients; 65.2% were ≥65 years of age, 75.9% had chronic kidney disease, and 82.1% had diabetes. Baseline mean serum potassium was similar in the without-food (5.44 mEq/L) and with-food (5.34 mEq/L) groups. The primary endpoint was achieved by 87.3% (95% CI 75.5-94.7) and 82.5% (95% CI 70.1-91.3) of patients in the with-food and without-food groups, respectively; least squares mean changes in serum potassium from baseline to week 4 were -0.65 and -0.62 mEq/L, respectively (p < 0.0001). The most common AEs were diarrhea and constipation. Serum K+ remained ≥3.5 mEq/L in all patients; 5 patients developed serum magnesium <1.4 mg/dL, including 4 whose baseline magnesium was below the lower limit of normal. Conclusion: Patiromer is equally effective and well tolerated when taken without food or with food, thereby offering the potential for dosing flexibility. © 2017 The Author(s)
    Sponsors
    Writing and editorial support services were provided by Impact Communication Partners, Inc., and funded by Relypsa, Inc., a Vifor Pharma Group Company.
    Keyword
    Hyperkalemia
    Patiromer
    Potassium
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031411731&doi=10.1159%2f000481270&partnerID=40&md5=d28d8763b984f95dd9531b34fcc87d2c; http://hdl.handle.net/10713/11321
    ae974a485f413a2113503eed53cd6c53
    10.1159/000481270
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    UMB Open Access Articles 2017

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