Acidemia, Methylmalonic

National Organization for Rare Disorders, Inc.

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Important
It is possible that the main title of the report Acidemia, Methylmalonic is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

The methylmalonic acidemias are organic acidemias caused by an enzymatic defect in the metabolism of four amino acids (methionine, threonine, isoleucine and valine). This results in an abnormally high level of acid in the blood (academia) and body tissues. In the acute form, drowsiness, coma, and seizures may occur. Mental retardation is a long-term consequence. The disorder may be caused by a deficiency of one or more of the enzymes methylmalonyl CoA mutase, methylmalonyl racemase, or adenosylcobalamin synthetic enzymes. Excretion of methylmalonate, a product of amino acid metabolism, in the urine is abnormally high and therefore is a marker of the disorder. All known organic acidemias are inherited as autosomal recessive traits.

Supporting Organizations

CLIMB (Children Living with Inherited Metabolic Diseases)

Climb Building
176 Nantwich Road
Crewe, CW2 6BG
United Kingdom
Tel: 4408452412173
Fax: 4408452412174
Email: enquiries@climb.org.uk
Website: http://www.CLIMB.org.uk

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
Website: http://rarediseases.info.nih.gov/GARD/

NIH/National Institute of Diabetes, Digestive & Kidney Diseases

Office of Communications & Public Liaison
Bldg 31, Rm 9A06
Bethesda, MD 20892-2560
Tel: (301)496-3583
Email: NDDIC@info.niddk.nih.gov
Website: http://www2.niddk.nih.gov/

Organic Acidaemias UK

5, Saxon Road
Middlesex, TW15 1QL
United Kingdom
Tel: 4401784245989
Email: info.oauk@gmail.com
Website: http://myweb.tiscali.co.uk/priddy/

Organic Acidemia Association

9040 Duluth Street
Golden Valley, MN 55427
USA
Tel: (763)559-1797
Fax: (763)694-0017
Email: mkstagni@gmail.com
Website: http://www.oaanews.org/index.htm

Taking Action Against Language Disorders for Kids (TALK)

22980 Donna Lane
Bend, OR 97701
Tel: (541)389-0004
Fax: (503)389-0004

The Arc

1825 K Street NW, Suite 1200
Washington, DC 20006
Tel: (202)534-3700
Fax: (202)534-3731
Tel: (800)433-5255
Email: info@thearc.org
Website: http://www.thearc.org

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org 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.

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.

Last Updated:  8/8/2007
Copyright  2007 National Organization for Rare Disorders, Inc.