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- W2012930217 abstract "Drug-induced torsades de pointes (TdP) arrhythmia is a major safety concern in the process of drug design and development. The incidence of TdP tends to be low, so early pre-clinical screens rely on surrogate markers of TdP to highlight potential problems with new drugs. hERG (human ether-à-go-go-related gene, alternative nomenclature KCNH2) is responsible for channels mediating the ‘rapid’ delayed rectifier K+ current (IKr) which plays an important role in ventricular repolarization. Pharmacological inhibition of native IKr and of recombinant hERG channels is a shared feature of diverse drugs associated with TdP. In vitro hERG assays therefore form a key element of an integrated assessment of TdP liability, with patch-clamp electrophysiology offering a ‘gold standard’. However, whilst clearly necessary, hERG assays cannot be assumed automatically to provide sufficient information, when considered in isolation, to differentiate ‘safe’ from ‘dangerous’ drugs. Other relevant factors include therapeutic plasma concentration, drug metabolism and active metabolites, severity of target condition and drug effects on other cardiac ion channels that may mitigate or exacerbate effects of hERG blockade. Increased understanding of the nature of drug-hERG channel interactions may ultimately help eliminate potential hERG blockade early in the design and development process. Currently, for promising drug candidates integration of data from hERG assays with information from other pre-clinical safety screens remains essential." @default.
- W2012930217 created "2016-06-24" @default.
- W2012930217 creator A5031201319 @default.
- W2012930217 creator A5037737415 @default.
- W2012930217 creator A5076411219 @default.
- W2012930217 creator A5017683254 @default.
- W2012930217 date "2008-08-01" @default.
- W2012930217 modified "2023-10-18" @default.
- W2012930217 title "The hERG potassium channel and hERG screening for drug-induced torsades de pointes" @default.
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