Types of<unk>  syndromes More than 25 syndromes resulting from abnormal<unk><unk>  have been described. Among them are syndromes with several different patterns of inheritance; genetic counseling thus differs greatly between syndromes. * Lissencephaly * Microlissencephaly * Schizencephaly * Porencephaly * Pachygyria * Polymicrogyria * Agyria * Macrogyria * Microgyria * Micropolygyria * Grey matter heterotopia * Agenesis of the corpus callosum * Agenesis of the cranial nerves * Band heterotopias Focal cortical dysplasia, Miller–Dieker syndrome, , Fukuyama congenital muscular dystrophy and Walker–Warburg syndrome are genetic disorders associated with lissencephaly.
Neuronal migration disorder
Developmental regression
Peroxisomal disorder
Cranio-lenticulo-sutural dysplasia
Developmental disorder
Neuroectodermal neoplasm
Caudal regression syndrome
Trinucleotide repeat disorder