Abstract
Purpose
Therapeutic drug monitoring (TDM) is being considered as a tool to individualise sunitinib treatment of gastrointestinal stromal tumours (GIST). Here, we used computer simulations to assess the expected impact of sunitinib TDM on the clinical outcome of patients with GIST.
Methods
Monte Carlo simulations were performed in R, based on previously published pharmacokinetic–pharmacodynamic models. Clinical trials with dose-limiting toxicity and patient dropout were simulated to establish the study size required to obtain sufficient statistical power for comparison of TDM-guided and fixed dosing.
Results
The simulations revealed that TDM might increase time to tumour progression by about 1–2 months (15–31 %) in eligible patients. However, the number of subjects required for a sufficient statistical power to quantify clinical benefit of TDM guided is likely to be prohibitively high (>1000).
Conclusion
Although data from randomised clinical trials on the clinical impact of sunitinib TDM are lacking, our findings support implementation of sunitinib TDM in clinical practice. For rare cancers with well-defined exposure–response relationships, modelling and simulation might allow the optimisation of dosing strategies when clinical trials cannot be performed due to low number of patients.
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References
European Medicines Agency (2015) Sutent: EPAR—product information. http://www.ema.europa.eu/docs/en_GB/document_library/EPAR_-_Product_Information/human/000687/WC500057737.pdf. Accessed 26 Oct 2015
Yu H, Steeghs N, Nijenhuis CM, Schellens JH, Beijnen JH, Huitema AD (2014) Practical guidelines for therapeutic drug monitoring of anticancer tyrosine kinase inhibitors: focus on the pharmacokinetic targets. Clin Pharmacokinet 53(4):305–325. doi:10.1007/s40262-014-0137-2
Lankheet NA, Knapen LM, Schellens JH, Beijnen JH, Steeghs N, Huitema AD (2014) Plasma concentrations of tyrosine kinase inhibitors imatinib, erlotinib, and sunitinib in routine clinical outpatient cancer care. Ther Drug Monit 36(3):326–334. doi:10.1097/FTD.0000000000000004
Terada T, Noda S, Inui K (2015) Management of dose variability and side effects for individualized cancer pharmacotherapy with tyrosine kinase inhibitors. Pharmacol Ther 152:125–134. doi:10.1016/j.pharmthera.2015.05.009
Escudier B, Roigas J, Gillessen S, Harmenberg U, Srinivas S, Mulder SF, Fountzilas G, Peschel C, Flodgren P, Maneval EC, Chen I, Vogelzang NJ (2009) Phase II study of sunitinib administered in a continuous once-daily dosing regimen in patients with cytokine-refractory metastatic renal cell carcinoma. J Clin Oncol 27(25):4068–4075. doi:10.1200/JCO.2008.20.5476
Houk BE, Bello CL, Poland B, Rosen LS, Demetri GD, Motzer RJ (2010) Relationship between exposure to sunitinib and efficacy and tolerability endpoints in patients with cancer: results of a pharmacokinetic/pharmacodynamic meta-analysis. Cancer Chemother Pharmacol 66(2):357–371. doi:10.1007/s00280-009-1170-y
Lankheet NA, Kloth JS, Gadellaa-van Hooijdonk CG, Cirkel GA, Mathijssen RH, Lolkema MP, Schellens JH, Voest EE, Sleijfer S, de Jonge MJ, Haanen JB, Beijnen JH, Huitema AD, Steeghs N (2014) Pharmacokinetically guided sunitinib dosing: a feasibility study in patients with advanced solid tumours. Br J Cancer 110(10):2441–2449. doi:10.1038/bjc.2014.194
Houk BE, Bello CL, Kang D, Amantea M (2009) A population pharmacokinetic meta-analysis of sunitinib malate (SU11248) and its primary metabolite (SU12662) in healthy volunteers and oncology patients. Clin Cancer Res 15(7):2497–2506. doi:10.1158/1078-0432.CCR-08-1893
Yu H, Steeghs N, Kloth JS, de Wit D, van Hasselt JG, van Erp NP, Beijnen JH, Schellens JH, Mathijssen RH, Huitema AD (2015) Integrated semi-physiological pharmacokinetic model for both sunitinib and its active metabolite SU12662. Br J Clin Pharmacol 79(5):809–819. doi:10.1111/bcp.12550
Food and Drug Administration (1999) Guidance for industry population pharmacokinetics. http://www.fda.gov/downloads/Drugs/…/Guidances/UCM072137.pdf. Accessed 26 Oct 2015
Food and Drug Administration (2003) Guidance for industry: exposure–response relationships-study design, data analysis, and regulatory applications. http://www.fda.gov/downloads/drugs/guidancecomplianceregulatoryinformation/guidances/ucm072109.pdf. Accessed 22 Oct 2015
Holford N, Ma SC, Ploeger BA (2010) Clinical trial simulation: a review. Clin Pharmacol Ther 88(2):166–182. doi:10.1038/clpt.2010.114
Kowalski KG, Hutmacher MM (2001) Design evaluation for a population pharmacokinetic study using clinical trial simulations: a case study. Stat Med 20(1):75–91
Bernstein M (2006) Ethical guideposts to clinical trials in oncology. Curr Oncol 13(2):55–60
Suresh K, Chandrashekara S (2012) Sample size estimation and power analysis for clinical research studies. J Hum Reprod Sci 5(1):7–13. doi:10.4103/0974-1208.97779
Halpern SD, Karlawish JH, Berlin JA (2002) The continuing unethical conduct of underpowered clinical trials. JAMA 288(3):358–362
Rinne H (2008) Definition and properties of the WEIBULL distribution. The Weibull distribution: a handbook. CRC Press, Boca Raton, pp 27–97
Bonate PL (2011) Principles of simulation. In: Pharmacokinetic–pharmacodynamic modeling and simulation, 2nd edn. Springer, New York, pp 489–581. doi:10.1007/978-1-4419-9485-1
Demetri GD, van Oosterom AT, Garrett CR, Blackstein ME, Shah MH, Verweij J, McArthur G, Judson IR, Heinrich MC, Morgan JA, Desai J, Fletcher CD, George S, Bello CL, Huang X, Baum CM, Casali PG (2006) Efficacy and safety of sunitinib in patients with advanced gastrointestinal stromal tumour after failure of imatinib: a randomised controlled trial. Lancet 368(9544):1329–1338. doi:10.1016/S0140-6736(06)69446-4
Reichardt P, Kang YK, Rutkowski P, Schuette J, Rosen LS, Seddon B, Yalcin S, Gelderblom H, Williams CC, Fumagalli E, Biasco G, Hurwitz HI, Kaiser PE, Fly K, Matczak E, Chen L, Lechuga MJ, Demetri GD (2015) Clinical outcomes of patients with advanced gastrointestinal stromal tumors: safety and efficacy in a worldwide treatment-use trial of sunitinib. Cancer 121(9):1405–1413. doi:10.1002/cncr.29220
Li J, Gao J, Hong J, Shen L (2012) Efficacy and safety of sunitinib in Chinese patients with imatinib-resistant or -intolerant gastrointestinal stromal tumors. Future Oncol 8(5):617–624. doi:10.2217/fon.12.29
George S, Blay JY, Casali PG, Le Cesne A, Stephenson P, Deprimo SE, Harmon CS, Law CN, Morgan JA, Ray-Coquard I, Tassell V, Cohen DP, Demetri GD (2009) Clinical evaluation of continuous daily dosing of sunitinib malate in patients with advanced gastrointestinal stromal tumour after imatinib failure. Eur J Cancer 45(11):1959–1968. doi:10.1016/j.ejca.2009.02.011
Åsberg A, Bjerre A, Neely M (2014) New algorithm for valganciclovir dosing in pediatric solid organ transplant recipients. Pediatr Transplant 18(1):103–111. doi:10.1111/petr.12179
del Mar Fernández de Gatta M, Martin-Suarez A, Lanao JM (2013) Approaches for dosage individualisation in critically ill patients. Expert Opin Drug Metab Toxicol 9(11):1481–1493. doi:10.1517/17425255.2013.822486
van Hest R, Mathot R, Vulto A, Weimar W, van Gelder T (2005) Predicting the usefulness of therapeutic drug monitoring of mycophenolic acid: a computer simulation. Ther Drug Monit 27(2):163–167
Booth BP, Rahman A, Dagher R, Griebel D, Lennon S, Fuller D, Sahajwalla C, Mehta M, Gobburu JV (2007) Population pharmacokinetic-based dosing of intravenous busulfan in pediatric patients. J Clin Pharmacol 47(1):101–111. doi:10.1177/0091270006295789
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Goulooze, S.C., Galettis, P., Boddy, A.V. et al. Monte Carlo simulations of the clinical benefits from therapeutic drug monitoring of sunitinib in patients with gastrointestinal stromal tumours. Cancer Chemother Pharmacol 78, 209–216 (2016). https://doi.org/10.1007/s00280-016-3071-1
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DOI: https://doi.org/10.1007/s00280-016-3071-1