| Groupe of BM | Type of brain malformations | Number | % |
| CDA (n = 19) | Tuberous sclerosis complex | 9 | 31 |
| Pachygyria | 6 | 20.7 | |
| Lissencephaly | 3 | 10.3 | |
| Schizencephaly | 1 | 3.4 | |
| DBS (n = 9) | Agenesis of the corpus callosum (ACC) | 8 | 27.6 |
| Holoprosencephaly | 1 | 3.4 | |
| RDA (n = 3) | Agenesis of the vermis | 2 | 6.9 |
| Dandy walker | 1 | 3.4 | |
| GA (n = 1) | Hydrocephalus | 1 | 3.4 |