PMID- 25106074 OWN - NLM STAT- MEDLINE DCOM- 20150420 LR - 20220316 IS - 1872-7913 (Electronic) IS - 0924-8579 (Linking) VI - 44 IP - 3 DP - 2014 Sep TI - Voriconazole pharmacokinetics and exposure-response relationships: assessing the links between exposure, efficacy and toxicity. PG - 183-93 LID - S0924-8579(14)00185-X [pii] LID - 10.1016/j.ijantimicag.2014.05.019 [doi] AB - The triazole antifungal voriconazole (VCZ) exhibits broad-spectrum antifungal activity and is the first-line treatment for invasive aspergillosis. Highly variable, non-linear pharmacokinetics, metabolism via the polymorphic drug-metabolising enzyme CYP2C19, and a range of serious adverse events (AEs) including hepatotoxicity and neurotoxicity complicate the clinical utility of VCZ. As interest in optimising VCZ treatment has increased, a growing number of studies have examined the relationships between VCZ exposure and efficacy in the treatment and prevention of invasive fungal infections, as well as associations with VCZ-related AEs. This review provides a critical analysis of VCZ pharmacokinetics and exposure-response (E-R) relationships, assessing the links between VCZ exposure, efficacy and toxicity. Low VCZ exposure has frequently been associated with a higher incidence of treatment failure; fewer studies have addressed E-R relationships with prophylactic VCZ. VCZ-related neurotoxicity appears common at high VCZ concentrations and can be minimised by maintaining concentrations below the recommended upper concentration thresholds; hepatotoxicity appears to be associated with increased VCZ exposure but is also prevalent at low concentrations. Further research should aim to inform and optimise the narrow therapeutic range of VCZ as well as develop interventions to individualise VCZ dosing to achieve maximal efficacy with minimal toxicity. CI - Copyright (c) 2014 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved. FAU - Dolton, Michael J AU - Dolton MJ AD - Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia. FAU - McLachlan, Andrew J AU - McLachlan AJ AD - Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia; Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, NSW, Australia. Electronic address: andrew.mclachlan@sydney.edu.au. LA - eng PT - Journal Article PT - Review DEP - 20140707 PL - Netherlands TA - Int J Antimicrob Agents JT - International journal of antimicrobial agents JID - 9111860 RN - 0 (Antifungal Agents) RN - JFU09I87TR (Voriconazole) SB - IM MH - Antifungal Agents/administration & dosage/adverse effects/*pharmacokinetics/pharmacology MH - Aspergillosis/drug therapy MH - Dose-Response Relationship, Drug MH - Drug-Related Side Effects and Adverse Reactions/pathology MH - Humans MH - Treatment Failure MH - Voriconazole/administration & dosage/adverse effects/*pharmacokinetics/pharmacology OTO - NOTNLM OT - Antifungal OT - Azoles OT - Exposure-response OT - Pharmacodynamics OT - Pharmacokinetics OT - Voriconazole EDAT- 2014/08/12 06:00 MHDA- 2015/04/22 06:00 CRDT- 2014/08/10 06:00 PHST- 2014/05/17 00:00 [received] PHST- 2014/05/19 00:00 [accepted] PHST- 2014/08/10 06:00 [entrez] PHST- 2014/08/12 06:00 [pubmed] PHST- 2015/04/22 06:00 [medline] AID - S0924-8579(14)00185-X [pii] AID - 10.1016/j.ijantimicag.2014.05.019 [doi] PST - ppublish SO - Int J Antimicrob Agents. 2014 Sep;44(3):183-93. doi: 10.1016/j.ijantimicag.2014.05.019. Epub 2014 Jul 7.