Table 1: Demographic characteristics.
| Demographic characteristics | Column |
| Gender | Male 5 (42%) |
| Female 7 (58%) | |
| Ethnic origin | Caucasian 7 (58%) |
| Middle eastern 5 (42%) | |
| Age at diagnosis (years) | Mean 4.75y |
| Range 1-18y | |
| Before 5y of age- 8 (66%) | |
| Above or at 5y of age-4 (33%) | |
| Family history of affected members | History of affected siblings -8 (67%) |
| History of other affected members- 2 (17%) | |
| History of consanguinity- 3 (25%) |