Abcd Syndrome, also known as abcds, is related to mild cognitive impairment and aganglionosis, total intestinal. An important gene associated with Abcd Syndrome is EDNRB (Endothelin Receptor Type B), and among its related pathways/superpathways are Neuroscience and Reelin Pathway (Cajal-Retzius cells). Affiliated tissues include small intestine and spinal cord, and related phenotypes are hearing impairment and aganglionic megacolon