| | | Microsatellite (inframe_deletion) | Short QT syndrome type 2 +7 more | |
| | | Deletion (frameshift variant) | Long QT syndrome +1 more | |
| | | Duplication (frameshift variant) | Long QT syndrome 1 +3 more | |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +7 more | |
| | | Single nucleotide variant (missense variant) | not provided +8 more | |
| | | Single nucleotide variant (missense variant) | Atrial fibrillation, familial, 3 +7 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +2 more | |
| | | Single nucleotide variant (nonsense) | Conduction disorder of the heart +8 more | |
| | | Indel (frameshift variant) | Jervell and Lange-Nielsen syndrome 1 | |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +8 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +3 more | |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +5 more | |
| | KCNQ1, KCNQ1-AS1 (P631fs +1 more) | Deletion (frameshift variant) | KCNQ1-related condition +9 more | GPathogenic/Likely pathogenic |
| | | Single nucleotide variant (missense variant) | Long QT syndrome 5 +8 more | GConflicting classifications of pathogenicity |
| | | Variation | Jervell and Lange-Nielsen syndrome 1 | |