Urinary phenylacetylglutamine (U-PAGN) concentrations in spot urine samples were analyzed as a dosing biomarker during glycerol phenylbutyrate (GPB) dosing in 68 healthy adults and 66 adult and pediatric patients with urea cycle disorders who participated in GPB clinical trials. Age- and body surface area (BSA)-specific 25th percentile cutoff points for spot U-PAGN concentrations (<~9000 μg/mL for < 2 years old patients, < 7000 μg/mL for > 2 years with BSA ≤ 1.3 m, and <~5000 μg/mL for > 2 years of age with BSA > 1.3 m) were determined as an approach to identify patients for whom increased dosing and/or adherence to prescribed dosing should be assessed.
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| http://dx.doi.org/10.1016/j.ymgmr.2015.09.003 | DOI Listing |
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