Key result
The hERG-N588K mutation, associated with short QT syndrome, exhibits a mixed profile of both gain-of-function and loss-of-function properties, including reduced tail currents.
The hERG-N588K mutation, previously considered solely a gain-of-function mutation in short QT syndrome, actually exhibits a mixed gain- and loss-of-function profile.
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Challenges prior view of hERG-N588K as pure gain-of-function in short QT syndrome; leaves open its human relevance pending clinical validation.
Grunnet et al. (2008) studied Short QT syndrome. hERG-N588K mutation was evaluated on Biophysical properties (tail currents and activation). The hERG-N588K mutation, associated with short QT syndrome, exhibits a mixed profile of both gain-of-function and loss-of-function properties, including reduced tail currents.
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