PMID- 29849129 OWN - NLM STAT- MEDLINE DCOM- 20190415 LR - 20190901 IS - 1745-7254 (Electronic) IS - 1671-4083 (Print) IS - 1671-4083 (Linking) VI - 39 IP - 9 DP - 2018 Sep TI - Whole-body physiology-based pharmacokinetics of caspofungin for general patients, intensive care unit patients and hepatic insufficiency patients. PG - 1533-1543 LID - 10.1038/aps.2017.176 [doi] AB - Caspofungin is an echinocandin antifungal agent licensed as a first-line therapy for invasive candidiasis in patients with moderate to severe illness or recent exposure to azoles. In this study we developed a whole-body physiology-based pharmacokinetics (WB-PBPK) model to predict the pharmacokinetics (PK) of caspofungin, and combined with Monte Carlo simulation (MCS) to optimize clinical dosage regimens of caspofungin in different kinds of patients. A WB-PBPK model of caspofungin was built and validated with raw data from 4 previous trials of general patients, intensive care unit (ICU) patients with Child-Pugh B, ICU patients on continuous renal replacement therapy, mild and moderate hepatic insuffciency (HI) patients. MCS was used to optimize clinical dosage regimens of caspofungin in these patients. A cumulative fraction of response (CFR) value of >/=90% was considered to be the minimum for achieving optimal empirical therapy. The simulated results of the WB-PBPK model were in good agreement with observed values of all trials. For general and ICU patients with caspofungin 70/50 mg, AUC and Cmax were decreased with the increase of body weight (BW) and showed great variation. MCS showed all general patients achieved CFR>/=90% regardless of BW. But not all ICU patients with higher BW (>/=70 kg) could achieve CFR>/=90%. Compared with standard dosage regimens in general patients, caspofungin 70/35 mg in ICU patients with Child-Pugh B achieved significantly decreased AUC and Cmax, but obtained similar AUC and Cmax in moderate HI patients with Child-Pugh B. The WB-PBPK model of caspofungin is able to predict PK of all populations correctly. The combined WB-PBPK model with MCS can successfully optimize clinical dosage regimens of caspofungin in all patient populations. FAU - Yang, Qian-Ting AU - Yang QT AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Zhai, Ya-Jing AU - Zhai YJ AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Chen, Lu AU - Chen L AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Zhang, Tao AU - Zhang T AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Yan, Yan AU - Yan Y AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Meng, Ti AU - Meng T AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Liu, Lei-Chao AU - Liu LC AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Chen, Li-Mei AU - Chen LM AD - Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Wang, Xue AU - Wang X AD - Central Intensive Care Unit, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. FAU - Dong, Ya-Lin AU - Dong YL AD - Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China. dongyalin@mail.xjtu.edu.cn. LA - eng PT - Journal Article DEP - 20180531 PL - United States TA - Acta Pharmacol Sin JT - Acta pharmacologica Sinica JID - 100956087 RN - 0 (Antifungal Agents) RN - F0XDI6ZL63 (Caspofungin) SB - IM MH - Adult MH - Antifungal Agents/administration & dosage/*pharmacokinetics MH - Caspofungin/administration & dosage/*pharmacokinetics MH - Hepatic Insufficiency/metabolism MH - Humans MH - Intensive Care Units MH - Male MH - *Models, Biological MH - Monte Carlo Method MH - Young Adult PMC - PMC6289327 OTO - NOTNLM OT - antifungal agent OT - caspofungin OT - cumulative fraction of response OT - hepatic insuffciency OT - intensive care unit OT - whole-body physiology-based pharmacokinetics model EDAT- 2018/06/01 06:00 MHDA- 2019/04/16 06:00 PMCR- 2019/09/01 CRDT- 2018/06/01 06:00 PHST- 2017/07/30 00:00 [received] PHST- 2017/11/26 00:00 [accepted] PHST- 2018/06/01 06:00 [pubmed] PHST- 2019/04/16 06:00 [medline] PHST- 2018/06/01 06:00 [entrez] PHST- 2019/09/01 00:00 [pmc-release] AID - 10.1038/aps.2017.176 [pii] AID - 123 [pii] AID - 10.1038/aps.2017.176 [doi] PST - ppublish SO - Acta Pharmacol Sin. 2018 Sep;39(9):1533-1543. doi: 10.1038/aps.2017.176. Epub 2018 May 31.