Table 1 Clinical features of the patients; NA: non-applicable
| Group | Age category | Gender | Genotype |
|---|---|---|---|
| PWS1 |
Infant (1 Year) | Male | Deletion type1 |
| PWS2 |
Child (10 year) | Male | Deletion type1 |
| PWS3 |
Adult (27 years) | Female | Deletion type2 |
| PWS4 |
Adult (32 years) | Male | Deletion type2 |
| PWS5 |
Infant (1 year) | Male | Uniparental disomy |
| PWS6 |
Adult (32 years) | Female | SNORD116 microdeletion |
| PWS7 |
Adult (21 years) | Male | MAGEL2 mutation |
| Control |
Infant (1 year) | Male | NA |
| Control |
Infant (1 year) | Female | NA |