Free Sialic Acid Storage Disorders, also known as free sialic acid storage disease, is related to infantile sialic acid storage disease and sialic acid storage disease, and has symptoms including seizures, ataxia and athetosis. An important gene associated with Free Sialic Acid Storage Disorders is SLC17A5 (Solute Carrier Family 17 Member 5). Affiliated tissues include brain and skin, and related phenotypes are intellectual disability and spasticity