From: "Familial" versus "Sporadic" intellectual disability: contribution of common microdeletion and microduplication syndromes
Affected Individuals
Families (%)
2
37 (36.6%)
3
36 (35.6%)
4
18 (17.8%)
5
5 (4.9%)
6
2 (1.98%)
8
12
1 (0.99%)