(2) Case 4 carried a 0.17-Mb deletion in chromosome Xq13.3 (Table 2, Figure 2(b)) which involved the ABC7 gene (OMIM ID: ∗300135) in a male fetus with Dandy-Walker syndrome (cerebellar malformation), absence of septum pellucidum, and arachnoid cyst associated with lip and palate cleft and skeletal dysplasia. This evidence concerns the gene ABCB7 and arachnoid cyst.