PMID- 30745383 OWN - NLM STAT- MEDLINE DCOM- 20200226 LR - 20200309 IS - 1098-6596 (Electronic) IS - 0066-4804 (Print) IS - 0066-4804 (Linking) VI - 63 IP - 4 DP - 2019 Apr TI - Pharmacokinetics, Safety, and Tolerability of Oxfendazole in Healthy Volunteers: a Randomized, Placebo-Controlled First-in-Human Single-Dose Escalation Study. LID - 10.1128/AAC.02255-18 [doi] LID - e02255-18 AB - Cysticercosis is a parasitic disease that frequently involves the human central nervous system (CNS), and current treatment options are limited. Oxfendazole, a veterinary medicine belonging to the benzimidazole family of anthelmintic drugs, has demonstrated substantial activity against the tissue stages of Taenia solium and has potential to be developed as an effective therapy for neurocysticercosis. To accelerate the transition of oxfendazole from veterinary to human use, the pharmacokinetics, safety, and tolerability of oxfendazole were evaluated in healthy volunteers in this phase 1 first-in-human (FIH) study. Seventy subjects were randomly assigned to receive a single oral dose of oxfendazole (0.5, 1, 3, 7.5, 15, 30, or 60 mg oxfendazole/kg body weight) or placebo and were followed for 14 days. Blood and urine samples were collected, and the concentrations of oxfendazole were measured using a validated ultraperformance liquid chromatography mass spectrometry method. The pharmacokinetic parameters of oxfendazole were estimated using noncompartmental analysis. Oxfendazole was rapidly absorbed with a mean plasma half-life ranging from 8.5 to 11 h. The renal excretion of oxfendazole was minimal. Oxfendazole exhibited significant nonlinear pharmacokinetics with less than dose-proportional increases in exposure after single oral doses of 0.5 mg/kg to 60 mg/kg. This nonlinearity of oxfendazole is likely due to the dose-dependent decrease in bioavailability that is caused by its low solubility. Oxfendazole was found to be well tolerated in this study at different escalating doses without any serious adverse events (AEs) or deaths. There were no significant differences in the distributions of hematology, biochemistry, or urine parameters between oxfendazole and placebo recipients. (This study has been registered at ClinicalTrials.gov under identifier NCT02234570.). CI - Copyright (c) 2019 American Society for Microbiology. FAU - An, Guohua AU - An G AD - Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa, USA guohua-an@uiowa.edu patricia-winokur@uiowa.edu. FAU - Murry, Daryl J AU - Murry DJ AD - Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa, USA. FAU - Gajurel, Kiran AU - Gajurel K AD - Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA. FAU - Bach, Thanh AU - Bach T AD - Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa, USA. FAU - Deye, Greg AU - Deye G AD - Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA. FAU - Stebounova, Larissa V AU - Stebounova LV AD - Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa, USA. FAU - Codd, Ellen E AU - Codd EE AD - Codd Consulting, LLC, Blue Bell, Pennsylvania, USA. AD - Oxfendazole Development Group, Blue Bell, Pennsylvania, USA. FAU - Horton, John AU - Horton J AD - Tropical Projects, Hitchin, United Kingdom. AD - Oxfendazole Development Group, Blue Bell, Pennsylvania, USA. FAU - Gonzalez, Armando E AU - Gonzalez AE AD - School of Veterinary Medicine, Universidual Nacional Mayor de San Marcos, Lima, Peru. AD - Oxfendazole Development Group, Blue Bell, Pennsylvania, USA. AD - Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru. FAU - Garcia, Hector H AU - Garcia HH AD - Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru. AD - Oxfendazole Development Group, Blue Bell, Pennsylvania, USA. FAU - Ince, Dilek AU - Ince D AD - Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA. FAU - Hodgson-Zingman, Denice AU - Hodgson-Zingman D AD - Division of Cardiology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA. FAU - Nomicos, Effie Y H AU - Nomicos EYH AD - Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA. FAU - Conrad, Thomas AU - Conrad T AD - The Emmes Corporation, Rockville, Maryland, USA. FAU - Kennedy, Jessie AU - Kennedy J AD - The Emmes Corporation, Rockville, Maryland, USA. FAU - Jones, Walt AU - Jones W AD - Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA. FAU - Gilman, Robert H AU - Gilman RH AD - Johns Hopkins School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA. AD - Oxfendazole Development Group, Blue Bell, Pennsylvania, USA. FAU - Winokur, Patricia AU - Winokur P AD - Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA guohua-an@uiowa.edu patricia-winokur@uiowa.edu. LA - eng SI - ClinicalTrials.gov/NCT02234570 GR - HHSN272200800008C/AI/NIAID NIH HHS/United States GR - HHSN272201300020I/AI/NIAID NIH HHS/United States GR - U54 TR001356/TR/NCATS NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Extramural DEP - 20190327 PL - United States TA - Antimicrob Agents Chemother JT - Antimicrobial agents and chemotherapy JID - 0315061 RN - 0 (Benzimidazoles) RN - E24GX49LD8 (benzimidazole) RN - OMP2H17F9E (oxfendazole) SB - IM MH - Administration, Oral MH - Adolescent MH - Adult MH - Benzimidazoles/*pharmacokinetics MH - Biological Availability MH - Dose-Response Relationship, Drug MH - Double-Blind Method MH - Female MH - Half-Life MH - Healthy Volunteers MH - Humans MH - Male MH - Middle Aged MH - Young Adult PMC - PMC6437481 OTO - NOTNLM OT - anthelmintic agent OT - clinical pharmacokinetics OT - cysticercosis OT - first-in-human study OT - oxfendazole EDAT- 2019/02/13 06:00 MHDA- 2020/02/27 06:00 PMCR- 2019/09/27 CRDT- 2019/02/13 06:00 PHST- 2018/10/27 00:00 [received] PHST- 2019/02/01 00:00 [accepted] PHST- 2019/02/13 06:00 [pubmed] PHST- 2020/02/27 06:00 [medline] PHST- 2019/02/13 06:00 [entrez] PHST- 2019/09/27 00:00 [pmc-release] AID - AAC.02255-18 [pii] AID - 02255-18 [pii] AID - 10.1128/AAC.02255-18 [doi] PST - epublish SO - Antimicrob Agents Chemother. 2019 Mar 27;63(4):e02255-18. doi: 10.1128/AAC.02255-18. Print 2019 Apr.