Mucopolysaccharidosis type IIIA
Other Names for this Disease
- Heparan sulfamidase deficiency
- Heparan sulfate sulfatase deficiency
- MPS 3A
- MPS IIIA
- Mucopoly-saccharidosis type 3A
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 In people with MPS IIIA, the body cannot break down a large sugar molecule called heparin sulfate. Signs and symptoms usually begin in early childhood and include severe neurological symptoms such as 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 IIIA is caused by mutations in the SGSH gene and is inherited in an autosomal recessive manner. There is no specific treatment for MPS IIIA and affected people usually do not survive past the second decade of life.Mucopolysaccharidosis type IIIA (MPS IIIA) is a progressive disorder that affects the central nervous system.
Last updated: 5/5/2014
- Mucopolysaccharidosis type III. Genetics Home Reference. August, 2010; http://ghr.nlm.nih.gov/condition/mucopolysaccharidosis-type-iii. Accessed 5/5/2014.
- Mucopolysaccharidoses Fact Sheet. National Institute of Neurological Disorders and Stroke Website. February 16, 2010; http://www.ninds.nih.gov/disorders/mucopolysaccharidoses/detail_mucopolysaccharidoses.htm. Accessed 4/14/2010.
- Chambers D. Sanfilippo syndrome. Medline Plus Web site. May 11, 2009; http://www.nlm.nih.gov/medlineplus/ency/article/001210.htm. Accessed 4/14/2010.
- Roseline Froissart and Irène Maire. Mucopolysaccharidosis type 3. Orphanet. February, 2007; http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=581. Accessed 5/5/2014.
- The American Society of Gene & Cell Therapy provides information on the treatment of lysosomal storage diseases.
- Genetics Home Reference (GHR) contains information on Mucopolysaccharidosis type IIIA. This website is maintained by the National Library of Medicine.
- 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 IIIA. Click on the link to view a sample search on this topic.
- The Social Security Administration has included this condition in their Compassionate Allowances Initiative. This initiative speeds up the processing of disability claims for applicants with certain medical conditions that cause severe disability. More information about Compassionate Allowances and applying for Social Security disability is available online.