Intellectual Developmental Disorder, Autosomal Dominant 41, also known as mrd41, is related to pierpont syndrome and st. louis encephalitis. An important gene associated with Intellectual Developmental Disorder, Autosomal Dominant 41 is TBL1XR1 (TBL1X/Y Related 1), and among its related pathways/superpathways are mBDNF and proBDNF regulation of GABA neurotransmission and Rett syndrome causing genes. Affiliated tissues include brain, and related phenotypes are seizure and intellectual disability