Intellectual Developmental Disorder, Autosomal Dominant 1, also known as mrd1, is related to subglottis benign neoplasm and macroglossia. An important gene associated with Intellectual Developmental Disorder, Autosomal Dominant 1 is MBD5 (Methyl-CpG Binding Domain Protein 5), and among its related pathways/superpathways are Chromatin organization and PKMTs methylate histone lysines. Affiliated tissues include eye and thyroid, and related phenotypes are intellectual disability and seizure