Mucopolysaccharidosis type IIID
Other Names for this Disease
- MPS 3D
- MPS IIID
- Mucopoly-saccharidosis type 3D
- N-acetylglucosamine-6-sulfate sulfatase deficiency
- Sanfilippo syndrome D
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Mucopolysaccharidosis type IIID (MPS IIID) is an genetic disorder that makes the body unable to break down large sugar molecules called glycosaminoglycans (GAGs, formerly called mucopolysaccharides). Specifically, people with this condition are unable to break down a GAG called heparan sulfate. Affected individuals can have severe neurological symptoms, including progressive dementia, aggressive behavior, hyperactivity, seizures, deafness, loss of vision, and an inability to sleep for more than a few hours at a time. MPS IIID is caused by the missing or deficient enzyme N-acetylglucosamine 6-sulfatase. MPS IIID is inherited in an autosomal recessive manner. There is no specific treatment for this condition. Most people with MPS IIID live into their teenage years, and some live longer.
Last updated: 4/14/2010
- Mucopolysaccharidoses Fact Sheet. National Institute of Neurological Disorders and Stroke (NINDS). June 20, 2015; http://www.ninds.nih.gov/disorders/mucopolysaccharidoses/detail_mucopolysaccharidoses.htm. Accessed 7/2/2015.
- Haldeman-Englert C. Sanfilippo syndrome. MedlinePlus. May 7, 2013; http://www.nlm.nih.gov/medlineplus/ency/article/001210.htm. Accessed 7/2/2015.
- The American Society of Gene & Cell Therapy provides information on the treatment of lysosomal storage diseases.
- MedlinePlus was designed by the National Library of Medicine to help you research your health questions, and it provides more information about this topic.
- The National Institute of Neurological Disorders and Stroke (NINDS) collects and disseminates research information related to neurological disorders. Click on the link to view information on this topic.
- The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.
- Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
- Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine.
- Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
- PubMed is a searchable database of medical literature and lists journal articles that discuss Mucopolysaccharidosis type IIID. Click on the link to view a sample search on this topic.