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National Organization for Rare Disorders, Inc.


It is possible that the main title of the report Mucopolysaccharidoses is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • MPS
  • MPS Disorder

Disorder Subdivisions

  • MPS I H (Hurler Disease)
  • MPS IV A and B (Morquio Syndrome)
  • MPS I S (Scheie Syndrome)
  • MPS III A, B, C, and D (Sanfillipo Syndrome)
  • MPS 1 H/S (Hurler/Scheie Syndrome)
  • MPS VII (Sly Syndrome)
  • MPS II-(Hunter Syndrome)
  • MPS VI (Maroteaux-Lamy Syndrome)
  • MPS IX (Hyaluronidase Deficiency)

General Discussion

The mucopolysaccharidoses (MPS) are a group of inherited lysosomal storage disorders. Lysosomes function as the primary digestive units within cells. Enzymes within lysosomes break down or digest particular nutrients, such as certain carbohydrates and fats. In individuals with MPS disorders, deficiency or malfunction of specific lysosomal enzymes leads to an abnormal accumulation of certain complex carbohydrates (mucopolysaccharides or glycosaminoglycans) in the arteries, skeleton, eyes, joints, ears, skin, and/or teeth. These accumulations may also be found in the respiratory system, liver, spleen, central nervous system, blood, and bone marrow. This accumulation eventually causes progressive damage to cells, tissues, and various organ systems of the body. There are several different types and subtypes of mucopolysaccharidosis. These disorders, with one exception, are inherited as autosomal recessive traits.


March of Dimes Birth Defects Foundation

1275 Mamaroneck Avenue

White Plains, NY 10605

Tel: (914)997-4488

Fax: (914)997-4763

Tel: (888)663-4637



National MPS Society, Inc.

PO Box 14686

Durham, NC 27709

Tel: (919)806-0101

Fax: (919)806-2055

Tel: (877)677-1001



NIH/National Institute of Diabetes, Digestive & Kidney Diseases

Office of Communications & Public Liaison

Bldg 31, Rm 9A06

31 Center Drive, MSC 2560

Bethesda, MD 20892-2560

Tel: (301)496-3583



NIH/National Institute of Neurological Disorders and Stroke

P.O. Box 5801

Bethesda, MD 20824

Tel: (301)496-5751

Fax: (301)402-2186

Tel: (800)352-9424

TDD: (301)468-5981


Society for Mucopolysaccharide Diseases

MPS House

Repton Place

White Lion Road


Buckinghamshire, HP7 9LP

United Kingdom

Tel: 08453899901

Fax: 08453899902



Canadian Society for Mucopolysaccharide and Related Diseases, Inc.

PO Box 30034

RPO Parkgate

North Vancouver

British Columbia, V7H 2Y8


Tel: 6049245130

Fax: 6049245131

Tel: 8006671846



Genetic and Rare Diseases (GARD) Information Center

PO Box 8126

Gaithersburg, MD 20898-8126

Tel: (301)251-4925

Fax: (301)251-4911

Tel: (888)205-2311

TDD: (888)205-3223


Let Them Hear Foundation

1900 University Avenue, Suite 101

East Palo Alto, CA 94303

Tel: (650)462-3174

Fax: (650)462-3144



Hide & Seek Foundation for Lysosomal Disease Research

6475 East Pacific Coast Highway Suite 466

Long Beach, CA 90803

Tel: (877)621-1122

Fax: (866)215-8850



For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site or email

Last Updated:  10/20/2011

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