| APD | action potential duration |
| CiPA | comprehensive in vitro proarrhythmia assay |
| Cmax | maximal concentration |
| cQT | concentration QT modelling |
| ECG | electrocardiogram |
| FDA | Food and Drug Administration |
| hERG | human ether a-go-go related gene |
| ICH | International Conference on Harmonization |
| LQTS | long QT syndrome |
| MAD | multiple ascending dose |
| NCE | new chemical entity |
| QTc | corrected QT |
| SAD | single ascending dose |
| SCD | sudden cardiac death |
| SQTS | short QT syndrome |
| TdP | Torsades de Pointes |
| TQT | thorough QT |