| Parameters | Values | ||
| Familial | Sporadic | ||
| Age (mean ± SD) years | 28.3 ± 6.49 | 28.1 ± 5.95 | |
| Marital status No. (%) | 4.0 (30.8) | 14.0 (41.2) | |
| Consanguinity between parents No. (%) | 1st degree | 0 (0) | 0 (0) |
| 2nd degree | 0 (0) | 0 (0) | |
| 3rd degree | 6 (46.2) | 14 (41.2) | |
| 4th degree | 1 (7.7) | 2 (5.9) | |
| 5th degree | 1 (7.7) | 4 (11.8) | |
| Any degree | 8 (61.5) | 20 (58.8) | |
| No consanguinity | 5 (38.5) | 14 (41.2) | |