C Syndrome, also known as opitz trigonocephaly syndrome, is related to mucopolysaccharidosis, type ii and mucopolysaccharidosis-plus syndrome, and has symptoms including seizures An important gene associated with C Syndrome is CD96 (CD96 Molecule), and among its related pathways/superpathways are Plasma lipoprotein assembly, remodeling, and clearance and Cholesterol metabolism. Affiliated tissues include skin and bone, and related phenotypes are intellectual disability and high palate