Abstract
In nonlinear mixed effect (NLME) modeling, the intra-individual variability is a collection of errors due to assay sensitivity, dosing, sampling, as well as model misspecification. Utilizing stochastic differential equations (SDE) within the NLME framework allows the decoupling of the measurement errors from the model misspecification. This leads the SDE approach to be a novel tool for model refinement. Using Metformin clinical pharmacokinetic (PK) data, the process of model development through the use of SDEs in population PK modeling was done to study the dynamics of absorption rate. A base model was constructed and then refined by using the system noise terms of the SDEs to track model parameters and model misspecification. This provides the unique advantage of making no underlying assumptions about the structural model for the absorption process while quantifying insufficiencies in the current model. This article focuses on implementing the extended Kalman filter and unscented Kalman filter in an NLME framework for parameter estimation and model development, comparing the methodologies, and illustrating their challenges and utility. The Kalman filter algorithms were successfully implemented in NLME models using MATLAB with run time differences between the ODE and SDE methods comparable to the differences found by Kakhi [10] for their stochastic deconvolution.
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References
Aarons L (1999) Pharmacokinetic and pharmacodynamic modelling in drug development. Stat Methods Med Res 8(3):181–182
Buse J, DeFronzo RA, Kim T, Skare S, Baron A, Fineman M (2013) Dissociation between metformin plasma exposure and its glucose-lowering effect: a novel gut-mediated mechanism for action. Presentation at the 49th Annual European Association for the Study of Diabetes Meeting, Barcelona, Spain
Chi EM, Reinsel GC (1989) Models for longitudinal data with random effects and AR(1) errors. J Am Stat Assoc 84:452–459
Davidian M, Giltinan DM (1993) Some general estimation methods for nonlinear mixed-effects model. J Biopharm Stat 3(1):23–55
Duong JK, Kumar SS, Kirkpatrick CM, Greenup LC, Arora M, Lee TC, Timmins P, Graham GG, Furlong TJ, Greenfield JR, Williams KM, Day RO (2013) Population pharmacokinetics of metformin in healthy subjects and patients with type 2 diabetes mellitus: simulation of doses according to renal function. Clin Pharmacokinet 53:373–384
Grimmett G, Stirzaker D (2001) Probability and random processes. Oxford University Press, New York
Haykin S (2001) Kalman filtering and neural networks. Wiley, New York
Jazwinski AH (1970) Stochastic processes and filtering theory. Academic Press, New York
Julier SJ, Uhlmann JK (1997) A new extension of the Kalman filter to nonlinear systems. In: Proceedings of Aerosense: The 11th International Symposium on Aerospace/Defense Sensing, Simulation and Controls
Kakhi M, Chittenden J (2013) Modeling of pharmacokinetic systems using stochastic deconvolution. J Pharm Sci 102:4433–4443
Karlsson MO, Beal SL, Sheiner LB (1995) Three new residual error models for population PK/PD analyses. J Pharmacokinet Biopharm 23(6):651–672
Kalman RE (1960) A new approach to linear filtering and prediction problems. Trans ASME 82:35–45
Kalman RE, Bucy RS (1961) New results in linear filtering and prediction theory. Trans ASME 83:95–108
Klebaner FC (2005) Introduction to stochastic calculus with applications. Imperial College Press, London
Klim S, Mortensen SB, Kristensen NR, Overgaard RV, Madsen H (2009) Population stochastic modelling (PSM)—an R package for mixed-effects models based on stochastic differential equations. Comput Methods Programs Biomed 94(3):279–289
Kristensen NR, Madsen H, Jorgensen SB (2004) Parameter estimation in stochastic grey-box models. Automatica 40:225–237
Lindsey JK, Jones B, Jarvis P (2001) Some statistical issues in modeling pharmacokinetic data. Stat Med 20:2775–2783
Majda AJ, Harlim J (2012) Filtering turbulent complex systems. Cambridge University Press, Cambridge
Matzuka B (2014) Nonlinear filtering methodologies for parameter estimation and uncertainty quantification in noisy, complex biological systems. PhD thesis, North Carolina State University
Mortensen S, Klim S. Population stochastic modelling (PSM): model definition, description and examples. http://www2.imm.dtu.dk/projects/psm/doc/PSM. Published September 18, 2008, Accessed 21 Sept 2015
Myung IJ (2003) Tutorial on maximum likelihood estimation. J Math Psychol 47:90–100
Overgaard RV, Jonsson N, Tornoe CW, Madsen H (2005) Nonlinear mixed-effects models with stochastic differential equations: implementation of an estimation algorithm. J Pharmacokinet Pharmacodyn 32(1):85–107
Pinhiero JC, Bates DM (1995) Approximations to the log-likelihood function in the nonlinear mixed effects model. J Comput Graph Stat 4(1):12–35
Racine-Poon A, Wakfield J (1998) Statistical methods for population pharmacokinetic modeling. Stat Methods Med Res 7(1):63–84
Sheiner L, Wakefield J (1999) Population modeling in drug development. Stat Methods Med Res 8(3):183–193
Sheiner LB, Steimer JL (2000) Pharmacokinetic/pharmacodynamic modeling in drug development. Ann Rev Pharmacol Toxicol 40:67–95
Sloan IH, Wozniakowski H (1998) When are Quasi-Monte Carlo algorithms efficient for high dimensional integrals? J Complex 14(1):1–33
Smith R (2014) Uncertainty quantification: theory, implementation, and applications. SIAM, Philadelphia
Taylor A, Chigutsa E, Monteleone J,Fineman M (2013) Population pharmacokinetic modeling of a novel delayed-release formulation of metformin (MetDR). Poster presented at the American Conference on Pharmacometrics, Fort Lauderdale, FL, USA
Tornoe CW, Agerso H, Jonsson EN, Madson H, Nielsen HA (2004) Nonlinear mixed-effects pharmacokinetic/pharmacodynamic modelling in NLME using differential equations. Comput Methods Prog Biomed 76:31–40
Tornoe CW, Jacobsen JL, Pedersen O, Hansen T, Madsen H (2004) Grey-box modelling of pharmacokinetic/pharmacodynamic systems. J Pharmacokinet Pharmacodyn 31:401–417
Tornoe CW, Overgaard RV, Agerso H, Nielsen HA, Madsen H, Jonsson EN (2005) Stochastic differential equations in NONMEM: implementation, application and comparison with ordinary differential equations. Pharm Res 22(8):1247–1258
Tucker GT, Casey C, Phillips PJ, Connor H, Ward JD, Woods HF (1981) Metformin kinetics in healthy subjects and in patients with diabetes mellitus. Br J Clin Pharm 12:235–246
Wann E, Van Der Merwe R (2001) The unscented Kalman filter for nonlinear estimation. Adaptive Systems for Signal Processing, Communications, and Control Symposium, IEEE. 2001. p 153–158
Acknowledgments
Professor Hien Tran was supported in part by the National Science Foundation under Grant NSF-DMS 1022688 and by the National Institute of Allergy and Infectious Diseases under Grant NIAID 9R01AI071915. Metformin data is proprietary property of Elcelyx Therapeutics and used with permission from Dr. Terri Kim.
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Matzuka, B., Chittenden, J., Monteleone, J. et al. Stochastic nonlinear mixed effects: a metformin case study. J Pharmacokinet Pharmacodyn 43, 85–98 (2016). https://doi.org/10.1007/s10928-015-9456-7
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DOI: https://doi.org/10.1007/s10928-015-9456-7