Forebrain anomalies are malformations of the forebrain most commonly due to chromosomal abnormalities, fetal alcohol syndrome, and HIV-1 infection acquired in vitro. Examples of forebrain anomalies include: Agenesis of the corpus callosumHoloprosencephaly Arrhinencephaly Microencephaly MacroencephalyLissencephaly Polymicrogyria Neuronal heterotopias What is Agenesis of the Corpus Callosum? …