Abstract
Background
Busulfan therapeutic drug monitoring (TDM) is necessary to better achieve the target exposure in children before hematopoietic stem cell transplantation (HSCT). However, TDM-based dosing may be challenging if intra-individual pharmacokinetic variability (also denoted inter-occasion variability [IOV]) occurs during therapy.
Objectives
The objectives of this study were to describe and quantify busulfan IOV in children, and to investigate its potential determinants.
Methods
We performed a new analysis of published data from children who received intravenous busulfan over 4 days before HSCT. We calculated individual pharmacokinetic parameters on each day of therapy using a published population pharmacokinetic model of busulfan and analyzed their changes. Population estimation of IOV was also performed with non-linear mixed effects (NLME) modeling. Potential predictors of significant decrease in busulfan clearance (CL) were assessed by using machine learning approaches.
Results
IOV could be assessed in 136 children. Between day (D) 1 and D2, most patients (80%) experienced a decrease in busulfan CL, with a median change of − 7.9%. However, both large decreases (minimum, − 48.5%) and increases in CL (maximum, + 44%) were observed. Over D1–D3 of therapy, mean CL significantly decreased (− 15%), with a decrease of ≥ 20% in 22% of patients. Some patients also showed unstable CL from day to day. NLME modeling of IOV provided a coefficient of variation of 10.6% and 13.1% for volume of distribution (Vd) and CL, respectively. Some determinants of significant decreases in busulfan CL were identified, but predictive performance of the models was limited.
Conclusions
Significant busulfan intra-individual variability may occur in children who receive a HSCT and is hardly predictable. The main risk is busulfan overexposure. Performing TDM repeatedly over therapy appears to be the best way to accurately estimate busulfan exposure and perform precision dosing.
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References
Bartelink IH, Lalmohamed A, van Reij EM, Dvorak CC, Savic RM, Zwaveling J, et al. Association of busulfan exposure with survival and toxicity after haemopoietic cell transplantation in children and young adults: a multicentre, retrospective cohort analysis. Lancet Haematol. 2016;3(11):e526–36. https://doi.org/10.1016/S2352-3026(16)30114-4.
Nguyen L, Fuller D, Lennon S, Leger F, Puozzo CIV. busulfan in pediatrics: a novel dosing to improve safety/efficacy for hematopoietic progenitor cell transplantation recipients. Bone Marrow Transpl. 2004;33(10):979–87. https://doi.org/10.1038/sj.bmt.1704446.
Buffery PJ, Allen KM, Chin PK, Moore GA, Barclay ML, Begg EJ. Thirteen years’ experience of pharmacokinetic monitoring and dosing of busulfan: can the strategy be improved? Ther Drug Monit. 2014;36(1):86–92. https://doi.org/10.1097/FTD.0b013e31829dc940.
Philippe M, Goutelle S, Guitton J, Fonrose X, Bergeron C, Girard P, et al. Should busulfan therapeutic range be narrowed in pediatrics? Experience from a large cohort of hematopoietic stem cell transplant children. Bone Marrow Transpl. 2016;51(1):72–8. https://doi.org/10.1038/bmt.2015.218.
Choong E, Uppugunduri CRS, Marino D, Kuntzinger M, Doffey-Lazeyras F, Lo Piccolo R, et al. Therapeutic drug monitoring of busulfan for the management of pediatric patients: cross-validation of methods and long-term performance. Ther Drug Monit. 2018;40(1):84–92. https://doi.org/10.1097/FTD.0000000000000468.
McCune JS, Baker KS, Blough DK, Gamis A, Bemer MJ, Kelton-Rehkopf MC, et al. Variation in prescribing patterns and therapeutic drug monitoring of intravenous busulfan in pediatric hematopoietic cell transplant recipients. J Clin Pharmacol. 2013;53(3):264–75. https://doi.org/10.1177/0091270012447196.
Palmer J, McCune JS, Perales MA, Marks D, Bubalo J, Mohty M, et al. Personalizing busulfan-based conditioning: considerations from the American Society for Blood and Marrow Transplantation Practice Guidelines Committee. Biol Blood Marrow Transpl. 2016;22(11):1915–25. https://doi.org/10.1016/j.bbmt.2016.07.013.
Bleyzac N, Souillet G, Magron P, Janoly A, Martin P, Bertrand Y, et al. Improved clinical outcome of paediatric bone marrow recipients using a test dose and Bayesian pharmacokinetic individualization of busulfan dosage regimens. Bone Marrow Transpl. 2001;28(8):743–51. https://doi.org/10.1038/sj.bmt.1703207.
Neely M, Philippe M, Rushing T, Fu X, van Guilder M, Bayard D, et al. Accurately achieving target busulfan exposure in children and adolescents with very limited sampling and the BestDose Software. Ther Drug Monit. 2016;38(3):332–42. https://doi.org/10.1097/FTD.0000000000000276.
Philippe M, Neely M, Rushing T, Bertrand Y, Bleyzac N, Goutelle S. Maximal concentration of intravenous busulfan as a determinant of veno-occlusive disease: a pharmacokinetic-pharmacodynamic analysis in 293 hematopoietic stem cell transplanted children. Bone Marrow Transpl. 2019;54(3):448–57. https://doi.org/10.1038/s41409-018-0281-7.
Busilvex summary of product characteristics. https://www.ema.europa.eu/en/documents/product-information/busilvex-epar-product-information_en.pdf. Accessed 6 Sep 2019.
Neely MN, van Guilder MG, Yamada WM, Schumitzky A, Jelliffe RW. Accurate detection of outliers and subpopulations with Pmetrics, a nonparametric and parametric pharmacometric modeling and simulation package for R. Ther Drug Monit. 2012;34(4):467–76. https://doi.org/10.1097/FTD.0b013e31825c4ba6.
Breiman L, Friedman J, Stone CJ, Olshen RA. Classification and regression trees. Boca Raton: Chapman and Hall/CRC; 1984.
Traub SL, Johnson CE. Comparison of methods of estimating creatinine clearance in children. Am J Hosp Pharm. 1980;37(2):195–201.
Jensen FV, Nielsen TD. Bayesian networks and decision graphs. New York: Springer Science; 2007.
Spiegelhalter DJ, Dawid AP, Lauritzen SL, Cowell RG. Bayesian analysis in expert systems. Stat Sci. 1993;8(3):219–47.
Lee JW, Kang HJ, Lee SH, Yu KS, Kim NH, Yuk YJ, et al. Highly variable pharmacokinetics of once-daily intravenous busulfan when combined with fludarabine in pediatric patients: phase I clinical study for determination of optimal once-daily busulfan dose using pharmacokinetic modeling. Biol Blood Marrow Transpl. 2012;18(6):944–50. https://doi.org/10.1016/j.bbmt.2011.11.025.
Trame MN, Bergstrand M, Karlsson MO, Boos J, Hempel G. Population pharmacokinetics of busulfan in children: increased evidence for body surface area and allometric body weight dosing of busulfan in children. Clin Cancer Res. 2011;17(21):6867–77. https://doi.org/10.1158/1078-0432.CCR-11-0074.
Paci A, Vassal G, Moshous D, Dalle JH, Bleyzac N, Neven B, et al. Pharmacokinetic behavior and appraisal of intravenous busulfan dosing in infants and older children: the results of a population pharmacokinetic study from a large pediatric cohort undergoing hematopoietic stem-cell transplantation. Ther Drug Monit. 2012;34(2):198–208. https://doi.org/10.1097/FTD.0b013e31824c2f60.
Bartelink IH, Boelens JJ, Bredius RG, Egberts AC, Wang C, Bierings MB, et al. Body weight-dependent pharmacokinetics of busulfan in paediatric haematopoietic stem cell transplantation patients: towards individualized dosing. Clin Pharmacokinet. 2012;51(5):331–45. https://doi.org/10.2165/11598180-000000000-00000.
Diestelhorst C, Boos J, McCune JS, Hempel G. Population pharmacokinetics of intravenous busulfan in children: revised body weight-dependent NONMEM® model to optimize dosing. Eur J Clin Pharmacol. 2014;70(7):839–47. https://doi.org/10.1007/s00228-014-1692-z.
McCune JS, Bemer MJ, Barrett JS, Scott Baker K, Gamis AS, Holford NH. Busulfan in infant to adult hematopoietic cell transplant recipients: a population pharmacokinetic model for initial and Bayesian dose personalization. Clin Cancer Res. 2014;20(3):754–63. https://doi.org/10.1158/1078-0432.CCR-13-1960.
Rhee SJ, Lee JW, Yu KS, Hong KT, Choi JY, Hong CR, et al. Pediatric patients undergoing hematopoietic stem cell transplantation can greatly benefit from a novel once-daily intravenous busulfan dosing nomogram. Am J Hematol. 2017;92(7):607–13. https://doi.org/10.1002/ajh.24734.
Nava T, Kassir N, Rezgui MA, Uppugunduri CRS, Huezo-Diaz Curtis P, Duval M, et al. Incorporation of GSTA1 genetic variations into a population pharmacokinetic model for IV busulfan in paediatric hematopoietic stem cell transplantation. Br J Clin Pharmacol. 2018;84(7):1494–504. https://doi.org/10.1111/bcp.13566.
Long-Boyle JR, Savic R, Yan S, Bartelink I, Musick L, French D, et al. Population pharmacokinetics of busulfan in pediatric and young adult patients undergoing hematopoietic cell transplant: a model-based dosing algorithm for personalized therapy and implementation into routine clinical use. Ther Drug Monit. 2015;37(2):236–45. https://doi.org/10.1097/FTD.0000000000000131.
Lindley C, Shea T, McCune J, Shord S, Decker J, Harvey D, et al. Intraindividual variability in busulfan pharmacokinetics in patients undergoing a bone marrow transplant: assessment of a test dose and first dose strategy. Anticancer Drugs. 2004;15(5):453–9.
Yeh RF, Pawlikowski MA, Blough DK, McDonald GB, O’Donnell PV, Rezvani A, et al. Accurate targeting of daily intravenous busulfan with 8-hour blood sampling in hospitalized adult hematopoietic cell transplant recipients. Biol Blood Marrow Transpl. 2012;18(2):265–72. https://doi.org/10.1016/j.bbmt.2011.06.013.
Ansari M, Curtis PH, Uppugunduri CRS, Rezgui MA, Nava T, Mlakar V, et al. GSTA1 diplotypes affect busulfan clearance and toxicity in children undergoing allogeneic hematopoietic stem cell transplantation: a multicenter study. Oncotarget. 2017;8(53):90852–67. https://doi.org/10.18632/oncotarget.20310.
Myers AL, Kawedia JD, Champlin RE, Kramer MA, Nieto Y, Ghose R, et al. Clarifying busulfan metabolism and drug interactions to support new therapeutic drug monitoring strategies: a comprehensive review. Expert Opin Drug Metab Toxicol. 2017;13(9):901–23. https://doi.org/10.1080/17425255.2017.1360277.
Nath CE, Earl JW, Pati N, Stephen K, Shaw PJ. Variability in the pharmacokinetics of intravenous busulphan given as a single daily dose to paediatric blood or marrow transplant recipients. Br J Clin Pharmacol. 2008;66(1):50–9. https://doi.org/10.1111/j.1365-2125.2008.03166.x.
Hassan M, Oberg G, Bjorkholm M, Wallin I, Lindgren M. Influence of prophylactic anticonvulsant therapy on high-dose busulphan kinetics. Cancer Chemother Pharmacol. 1993;33(3):181–6. https://doi.org/10.1007/bf00686213.
Buggia I, Zecca M, Alessandrino EP, Locatelli F, Rosti G, Bosi A, et al. Itraconazole can increase systemic exposure to busulfan in patients given bone marrow transplantation. GITMO (Gruppo Italiano Trapianto di Midollo Osseo). Anticancer Res. 1996;16(4A):2083-8.
Nilsson C, Aschan J, Hentschke P, Ringden O, Ljungman P, Hassan M. The effect of metronidazole on busulfan pharmacokinetics in patients undergoing hematopoietic stem cell transplantation. Bone Marrow Transpl. 2003;31(6):429–35. https://doi.org/10.1038/sj.bmt.1703896.
Gulbis AM, Culotta KS, Jones RB, Andersson BS. Busulfan and metronidazole: an often forgotten but significant drug interaction. Ann Pharmacother. 2011;45(7–8):e39. https://doi.org/10.1345/aph.1Q087.
Chung H, Yu KS, Hong KT, Choi JY, Hong CR, Kang HJ, et al. A significant influence of metronidazole on busulfan pharmacokinetics: a case report of therapeutic drug monitoring. Ther Drug Monit. 2017;39(3):208–10. https://doi.org/10.1097/FTD.0000000000000395.
Harvey RD, Morgan ET. Cancer, inflammation, and therapy: effects on cytochrome p450-mediated drug metabolism and implications for novel immunotherapeutic agents. Clin Pharmacol Ther. 2014;96(4):449–57. https://doi.org/10.1038/clpt.2014.143.
Sweiss K, Quigley JG, Oh A, Lee J, Ye R, Rondelli D, et al. A novel drug interaction between busulfan and blinatumomab. J Oncol Pharm Pract. 2019;25(1):226–8. https://doi.org/10.1177/1078155217729745.
Kim B, Lee JW, Hong KT, Yu KS, Jang IJ, Park KD, et al. Pharmacometabolomics for predicting variable busulfan exposure in paediatric haematopoietic stem cell transplantation patients. Sci Rep. 2017;7(1):1711. https://doi.org/10.1038/s41598-017-01861-7.
McCune JS, Batchelder A, Deeg HJ, Gooley T, Cole S, Phillips B, et al. Cyclophosphamide following targeted oral busulfan as conditioning for hematopoietic cell transplantation: pharmacokinetics, liver toxicity, and mortality. Biol Blood Marrow Transpl. 2007;13(7):853–62. https://doi.org/10.1016/j.bbmt.2007.03.012.
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Hanen Marsit, Michaël Philippe, Michael Neely, Teresa Rushing, Yves Bertrand, Michel Ducher, Vincent Leclerc, Jérôme Guitton, Nathalie Bleyzac, and Sylvain Goutelle have no conflicts of interest that are relevant to the content of this manuscript.
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This study was carried out as part of our routine work, which is funded by the authors’ institutions.
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Marsit, H., Philippe, M., Neely, M. et al. Intra-individual Pharmacokinetic Variability of Intravenous Busulfan in Hematopoietic Stem Cell-Transplanted Children. Clin Pharmacokinet 59, 1049–1061 (2020). https://doi.org/10.1007/s40262-020-00877-z
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DOI: https://doi.org/10.1007/s40262-020-00877-z