| | | Single nucleotide variant (splice donor variant) | Jervell and Lange-Nielsen syndrome | |
| | | Single nucleotide variant (nonsense) | Long QT syndrome +1 more | |
| | | Single nucleotide variant | Congenital long QT syndrome +2 more | |
| | | Single nucleotide variant | Jervell and Lange-Nielsen syndrome +2 more | |
| | | Single nucleotide variant | Jervell and Lange-Nielsen syndrome +2 more | |
| | | Single nucleotide variant | Congenital long QT syndrome +2 more | |
| | | Deletion (3 prime UTR variant) | Long QT syndrome +2 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome 2 +4 more | |
| | | Deletion (3 prime UTR variant) | Long QT syndrome +2 more | |
| | | Deletion (3 prime UTR variant) | not provided +3 more | |
| | | Duplication (3 prime UTR variant) | not provided +3 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome 2 +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Microsatellite (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Deletion (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Congenital long QT syndrome +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Deletion (3 prime UTR variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Congenital long QT syndrome +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Congenital long QT syndrome +4 more | |
| | | Single nucleotide variant (3 prime UTR variant) | Congenital long QT syndrome +4 more | |
| | KCNQ1, KCNQ1-AS1 (P533H +5 more) | Single nucleotide variant (missense variant) | Short QT syndrome +4 more | |
| | KCNQ1, KCNQ1-AS1 (T658N +5 more) | Single nucleotide variant (missense variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Single nucleotide variant (intron variant) | Congenital long QT syndrome +5 more | |
| | | Single nucleotide variant (intron variant) | Long QT syndrome +7 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +4 more | |
| | | Single nucleotide variant (intron variant) | not specified +5 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (intron variant) | Jervell and Lange-Nielsen syndrome +4 more | |
| | | Single nucleotide variant (missense variant) | Short QT syndrome +4 more | |
| | | Single nucleotide variant (synonymous variant) | Congenital long QT syndrome +4 more | |
| | | Single nucleotide variant (missense variant) | Familial atrial fibrillation +4 more | |
| | | Deletion (frameshift variant) | Jervell and Lange-Nielsen syndrome +3 more | GPathogenic/Likely pathogenic |
| | | Deletion (frameshift variant) | Jervell and Lange-Nielsen syndrome +1 more | |
| | | Single nucleotide variant (synonymous variant) | Cardiovascular phenotype +12 more | |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +13 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (missense variant) | KCNQ1-related disorder +5 more | GPathogenic/Likely pathogenic |
| | | Single nucleotide variant (missense variant) | Long QT syndrome +9 more | GPathogenic/Likely pathogenic |
| | | Deletion (frameshift variant) | Long QT syndrome 1 +8 more | |
| | | Deletion (frameshift variant) | Long QT syndrome 1 +6 more | GPathogenic/Likely pathogenic |
| | | Duplication (frameshift variant) | Cardiovascular phenotype +9 more | GPathogenic/Likely pathogenic |
| | | Single nucleotide variant (missense variant) | Cardiovascular phenotype +11 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (intron variant) | Familial atrial fibrillation +6 more | |
| | | Single nucleotide variant (missense variant) | Jervell and Lange-Nielsen syndrome +8 more | GConflicting classifications of pathogenicity |