| | | 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 | Jervell and Lange-Nielsen 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) | Familial atrial fibrillation +5 more | |
| | | Single nucleotide variant (intron variant) | Cardiovascular phenotype +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) | Cardiac arrhythmia +12 more | |
| | | Single nucleotide variant (missense variant) | Cardiac arrhythmia +13 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (missense variant) | KCNQ1-related condition +5 more | GPathogenic/Likely pathogenic |
| | | Single nucleotide variant (missense variant) | not provided +9 more | GPathogenic/Likely pathogenic |
| | | Deletion (frameshift variant) | Congenital long QT syndrome +8 more | |
| | | Deletion (frameshift variant) | Long QT syndrome +6 more | GPathogenic/Likely pathogenic |
| | | Duplication (frameshift variant) | not provided +9 more | GPathogenic/Likely pathogenic |
| | | Single nucleotide variant (missense variant) | Congenital long QT syndrome +11 more | GConflicting classifications of pathogenicity |
| | | Single nucleotide variant (intron variant) | Jervell and Lange-Nielsen syndrome +6 more | |
| | | Single nucleotide variant (missense variant) | Brugada syndrome +8 more | GConflicting classifications of pathogenicity |