Parenti-Mignot Neurodevelopmental Syndrome, also known as pmnds, is related to twinning, dizygotic and gonadal agenesis. An important gene associated with Parenti-Mignot Neurodevelopmental Syndrome is CHD5 (Chromodomain Helicase DNA Binding Protein 5). Affiliated tissues include skin, and related phenotypes are delayed speech and language development and intellectual disability