L1 Syndrome

National Organization for Rare Disorders, Inc.

Important
It is possible that the main title of the report L1 Syndrome 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.

Synonyms

  • Adducted Thumbs-Mental Retardation
  • Congenital Clasped Thumb with Mental Retardation
  • Garies-Mason Syndrome
  • Mental Retardation, Aphasia, Shuffling Gait, Adducted Thumbs (MASA)
  • X-linked Mental Retardation-Clasped Thumb Syndrome

Disorder Subdivisions

  • None

General Discussion

L1 syndrome is a genetic condition occurring in males that usually includes hydrocephalus, mental retardation, spasticity of legs and clasped (adducted) thumbs. L1 syndrome is caused by an abnormality (mutation) in the L1CAM gene. Different types of mutations result in different disease characteristics, but disease severity is variable, even in affected members of the same family.

Resources

National Hydrocephalus Foundation
12413 Centralia
Lakewood, CA 90715-1623
USA
Tel: (562)924-6666
Fax: (562)924-6666
Tel: (888)857-3434
Email: nhf@earthlink.net
Internet: http://www.nhfonline.org

Guardians of Hydrocephalus Research Foundation
2618 Avenue Z
Brooklyn, NY 11235
Tel: (718)743-4473
Fax: (718)743-1171
Tel: (800)458-8655
Email: ghrf2618@aol.com
Internet: http://www.ghrforg.org/

Hydrocephalus Association
870 Market Street
Suite 705
San Francisco, CA 94102
USA
Tel: (415)732-7040
Fax: (415)732-7044
Tel: (888)598-3789
Email: pip@hydroassoc.org
Internet: http://www.hydroassoc.org

National Aphasia Association
350 Seventh Avenue, Suite 902
New York, NY 10007
USA
Tel: (212)267-2814
Fax: (212)267-2812
Tel: (800)922-4622
Email: naa@aphasia.org
Internet: http://www.aphasia.org

National Institute of Neurological Disorders and Stroke (NINDS)
P.O. Box 5801
Bethesda, MD 20824
Tel: (301)496-5751
Fax: (301)402-2186
Tel: (800)352-9424
TDD: (301)468-5981
Email: me20t@nih.gov
Internet: http://www.ninds.nih.gov/

NIH/Nat'l Institute on Deafness & Other Communication Disorders Information Clearinghouse
1 Communication Ave
Bethesda, MD 20892-3456
Tel: (301)402-0900
Fax: (301)907-8830
Tel: (800)241-1044
TDD: (800)241-1105
Email: nidcdinfo@nidcd.nih.gov
Internet: http://www.nidcd.nih.gov

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
Email: ordr@od.nih.gov
Internet: http://rarediseases.info.nih.gov/Default.aspx

For a Complete Report

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

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