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It is possible that the main title of the report Tuberous Sclerosis 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.
Tuberous sclerosis is a rare genetic multisystem disorder that is typically apparent shortly after birth. The disorder may be characterized by episodes of uncontrolled electrical activity in the brain (seizures); mental retardation; distinctive skin abnormalities (lesions); and benign (noncancerous), tumor-like nodules (hamartomas) of the brain, certain regions of the eyes (e.g., retinas), the heart, the kidneys, the lungs, or other tissues or organs. In addition, many affected individuals may have cyst-like areas within certain skeletal regions, particularly bones of the fingers and toes (phalanges). Characteristic skin lesions include sharply defined areas of decreased skin coloration (hypopigmentation) that may develop during infancy and relatively small reddish nodules that may appear on the cheeks and nose beginning at approximately age four. These reddish lesions eventually enlarge, blend together (coalesce), and develop a wart-like appearance (sebaceous adenomas). Additional skin lesions may also develop, including flat, "coffee-colored" areas of increased skin pigmentation (cafe-au-lait spots); benign, fibrous nodules (fibromas) arising around or beneath the nails; or rough, elevated, "knobby" lesions (shagreen patches) on the lower back.
Tuberous sclerosis results from changes (mutations) in a gene or genes that may occur spontaneously (sporadically) for unknown reasons or be inherited as an autosomal dominant trait. Most cases represent new (sporadic) gene mutations, with no family history of the disease. Mutations of at least two different genes are known to cause tuberous sclerosis. One gene (TSC1) has been mapped to the long arm (q) of chromosome 9 (9q34). A second gene for the disease (TSC2) is located on the short arm (p) of chromosome 16 (16p13.3). It remains unclear whether some sporadic and familial cases of the disease may be caused by mutations of other, currently unidentified genes (genetic heterogeneity).
Tuberous Sclerosis Alliance
801 Roeder Road
Silver Spring, MD 20910
March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
1660 L Street, NW, Suite 301
Washington, DC 20036
8301 Professional Place
Landover, MD 20785
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Tuberous Sclerosis Association
PO Box 13938
Birmingham, Intl B45 5BF
Tel: +44 (0)121 445 6970
Children's Brain Tumor Foundation
274 Madison Avenue, Suite 1004
New York, NY 10016
Brain Tumor Foundation for Children, Inc.
6065 Roswell Road Suite 505
Atlanta, GA 30328-4015
Tuberous Sclerosis Canada Sclerose Tubereuse
508 12th Street
Alberta, Intl T1B 0K4
Rare Cancer Alliance
1649 North Pacana Way
Green Valley, AZ 85614
Rothberg Institute For Childhood Diseases
530 Whitfield Street
Guilford, CT 06437
MUMS National Parent-to-Parent Network
150 Custer Court
Green Bay, WI 54301-1243
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
PO Box 241956
Los Angeles, CA 90024
Pediatric Brain Tumor Foundation
302 Ridgefield Court
Asheville, NC 28806
American Society of Clinical Oncology
2318 Mill Road
Alexandria, VA 22314
LAM Treatment Alliance, Inc.
64 Church Street
Cambridge, MA 02138
P.O. Box 1239
Aledo, TX 76008
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 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. 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 www.rarediseases.org or email email@example.com
Last Updated: 2/24/2010
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