Tay Sachs Disease
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Tay Sachs Disease is not the name you expected.
Tay-Sachs disease is a rare, neurodegenerative disorder in which deficiency of an enzyme (hexosaminidase A) results in excessive accumulation of certain fats (lipids) known as gangliosides in the brain and nerve cells. This abnormal accumulation of gangliosides leads to progressive dysfunction of the central nervous system. This disorder is categorized as a lysosomal storage disease. Lysosomes are the major digestive units in cells. Enzymes within lysosomes break down or "digest" nutrients, including certain complex carbohydrates and fats.
Symptoms associated with Tay-Sachs disease may include an exaggerated startle response to sudden noises, listlessness, loss of previously acquired skills (i.e., psychomotor regression), and severely diminished muscle tone (hypotonia). With disease progression, affected infants and children may develop cherry-red spots within the middle layer of the eyes, gradual loss of vision, and deafness, increasing muscle stiffness and restricted movements (spasticity), eventual paralysis, uncontrolled electrical disturbances in the brain (seizures), and deterioration of cognitive processes (dementia). The classical form of Tay-Sachs disease occurs during infancy; an adult form (late-onset Tay-Sachs disease) may occur anytime from adolescence to the mid 30's.
Tay-Sachs disease is inherited as an autosomal recessive trait. The disorder results from changes (mutations) of a gene known as the HEXA gene, which regulates production of the hexosaminidase A enzyme. The HEXA gene has been mapped to the long arm (q) of chromosome 15 (15q23-q24).
CLIMB (Children Living with Inherited Metabolic Diseases)
- Climb Building
- 176 Nantwich Road
- Crewe, CW2 6BG
- United Kingdom
- Tel: 4408452412173
- Fax: 4408452412174
- Email: email@example.com
- Website: http://www.CLIMB.org.uk
Canadian Society for Mucopolysaccharide and Related Diseases, Inc.
- #218-2055 Commercial Drive
- Vancouver, BC V5N 0C7
- Tel: (604) 924-5130
- Tel: 1-800-667-1846
- Email: firstname.lastname@example.org
- Website: http://www.mpssociety.ca
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/
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
- Email: email@example.com
- Website: http://www.hideandseek.org
Instituto de Errores Innatos del Metabolismo
- Pontificia Universidad Javeriana Ed. Jesús Emilio
- Ramírez (53) Laboratorios 305A - 303
- Tel: 5713208320
- Email: firstname.lastname@example.org
- Website: http://www.javeriana.edu.co/ieim/programas_ieim.htm
Let Them Hear Foundation
- 1900 University Avenue, Suite 101
- East Palo Alto, CA 94303
- Tel: (650)462-3174
- Fax: (650)462-3144
- Email: email@example.com
- Website: http://www.letthemhear.org
March of Dimes
- 1275 Mamaroneck Avenue
- White Plains, NY 10605
- Tel: (914)997-4488
- Fax: (914)997-4763
- Email: AskUs@marchofdimes.org or firstname.lastname@example.org
- Website: http://www.marchofdimes.org and nacersano.org
NIH/National Institute of Child Health and Human Development
- 31 Center Dr
- Building 31, Room 2A32
- Bethesda, MD 20892
- Fax: (866)760-5947
- Tel: (800)370-2943
- Email: NICHDInformationResourceCenter@mail.nih.gov
- Website: http://www.nichd.nih.gov/
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
- Website: http://www.ninds.nih.gov/
National Tay-Sachs and Allied Diseases Association, Inc.
- 2001 Beacon Street
- Brookline, MA 02146-4227
- Tel: (617)277-4463
- Fax: (617)277-0134
- Tel: (800)906-8723
- Email: email@example.com
- Website: http://www.NTSAD.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: 1/21/2008
Copyright 2002 National Organization for Rare Disorders, Inc.
Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.