Monozygotic twin pairs and control pairs of which data were available for this study per disease
| Monozygotic twin pairs | Control pairs | |||
| N | Cases N (zygosity tested) | From literature N | N (dizygotic twin pairs) | |
| DCM | 10 | 6 (5) | 4 | 15 (0) |
| HCM | 11 | 6 (5) | 5 | 14 (2) |
| LQTS | 25 | 24 (17) | 1 | 30 (9) |
| Total | 46 | 36 (27) | 10 | 59 (11) |
DCM, dilated cardiomyopathy; HCM, hypertrophic cardiomyopathy; LQTS, long QT syndrome.