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Angelman Syndrome
What Is Angelman Syndrome?Angelman syndrome is a chromosomal (gene-linked) disease that causes neurological problems. The physician Harold Angelman first identified the syndrome in 1965, when he described several children in his practice as having "flat heads, jerky movements, protruding tongues and bouts of laughter." Infants with Angelman syndrome appear normal at birth, but begin to have feeding problems at age 1 to 2 months and noticeable developmental delays by 6 to 12 months. Seizures often may begin before the age of 3 years. Speech impairment is pronounced, with little to no use of words. The syndrome also is characterized by hyperactivity, small head size, and movement and balance disorders that can cause severe functional deficits. Angelman syndrome is the result of the deletion or inactivation of a particular series of genes that regulate a protein called ubiquitin (UBE3A) on chromosome 15q11-13. The majority of cases of Angelman syndrome are inherited (via maternal transmission of an abnormal chromosome) but others appear to be the result of genetic mutations from unknown causes. The extent and variety of symptoms vary depending on the specific gene(s) involved. Is There Any Treatment? There is no standard course of treatment for Angelman syndrome. Educational and behavioral interventions usually are effective in the areas of communication, schooling, sleep disturbances and general behavior. Physical and occupational therapies, speech and language interventions, behavior modification and parental training also are helpful. What Is the Prognosis? Most individuals with Angelman syndrome will have severe developmental delays, speech limitations, and problems with walking and staying upright. Early diagnosis and tailored interventions and therapies help improve quality of life. Additional Resources Angelman Syndrome Foundation 3015 E. New York St., Suite A2265 Aurora, IL 60504 1-800-IF-ANGEL (1-800-432-6435) or (630) 978-4245 Fax: (630) 978-7408 Internet: www.angelman.org E-mail: info@angelman.org The Arc of the United States 1010 Wayne Ave., Suite 650 Silver Spring, MD 20910 (301) 565-3842 Fax: (301) 565-3843 or (301) 565-5342 Internet: www.thearc.org E-mail: Info@thearc.org National Institute of Child Health and Human Development (NICHD) National Institutes of Health, DHHS 31 Center Drive, Rm. 2A32 MSC 2425 Bethesda, MD 20892-2425 (301) 496-5133 Fax: (301) 496-7101 Internet: www.nichd.nih.gov Updated: October 27, 2004 Source: National Institute of Neurological Disorders and Stroke, National Institutes of Health | |
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