Population Pharmacokinetic Model and Limited Sampling Strategies for Personalized Dosing of Levofloxacin in Tuberculosis Patients

Simone H J van den Elsen, Marieke G G Sturkenboom, Natasha van 't Boveneind-Vrubleuskaya, Alena Skrahina, Tjip S van der Werf, Scott K Heysell, Stellah Mpagama, Giovanni B Migliori, Charles A Peloquin, Daan J Touw, Jan-Willem C Alffenaar

OnderzoeksoutputAcademicpeer review

20 Citaten (Scopus)
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Levofloxacin is an antituberculosis drug with substantial interindividual pharmacokinetic variability; therapeutic drug monitoring (TDM) could therefore be helpful to improve treatment results. TDM would be more feasible with limited sampling strategies (LSSs), a method to estimate the area under the concentration curve for the 24-h dosing interval (AUC(0-24)) by using a limited number of samples. This study aimed to develop a population pharmacokinetic (popPK) model of levofloxacin in tuberculosis patients, along with LSSs using a Bayesian and multiple linear regression approach. The popPK model and Bayesian LSS were developed using data from 30 patients and externally validated with 20 patients. The LSS based on multiple linear regression was internally validated using jackknife analysis. Only clinically suitable LSSs (maximum time span, 8 h; minimum interval, 1 h; 1 to 3 samples) were tested. Performance criteria were root-mean-square error (RMSE) of 0.95. A one-compartment model with lag time best described the data while only slightly underestimating the AUC(0-24) (mean, -7.9%; standard error [SE], 1.7%). The Bayesian LSS using 0- and 5-h postdose samples (RMSE, 8.8%; MPE, 0.42%; r(2=)0.957) adequately estimated the AUC(0-24), with a mean underestimation of -4.4% (SE, 2.7%). The multiple linear regression LSS using 0- and 4-h postdose samples (RMSE, 7.0%; MPE, 5.5%; r(2)=0.977) was internally validated, with a mean underestimation of -0.46% (SE, 2.0%). In this study, we successfully developed a popPK model and two LSSs that could be implemented in clinical practice to assist TDM of levofloxacin.

Originele taal-2English
ArtikelnummerARTN e01092-18
Aantal pagina's10
TijdschriftAntimicrobial Agents and Chemotherapy
Nummer van het tijdschrift12
Vroegere onlinedatum2018
StatusPublished - dec.-2018

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