National Organization for Rare Disorders, Inc.
- cerebral cholesterinosis
- sterol 27-hydroxylase deficiency
Cerebrotendinous xanthomatosis (CTX) is a rare autosomal recessive genetic disorder caused by an abnormality in the CYP27A1 gene, resulting in a deficiency of the mitochondrial enzyme sterol 27-hydroxylase. The lack of this enzyme prevents cholesterol from being converted into a bile acid called chenodexoycholic acid. Cholestanol deposits accumulate in the nerve cells and membranes, and cause damage to the brain, spinal cord, tendons, lens of the eye and arteries. Affected individuals experience cataracts in childhood, and benign, fatty tumors (xanthomas) of the tendons during adolescence. This leads to progressive neurologic problems in adulthood such as paralysis, ataxia and dementia. Coronary heart disease is common.
CLIMB (Children Living with Inherited Metabolic Diseases)
176 Nantwich Road
Crewe, CW2 6BG
Kennedy Krieger Institute
707 North Broadway
Baltimore, MD 21205
United Leukodystrophy Foundation
224 N. 2nd St.
DeKalb, IL 60115
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Hunter's Hope Foundation, Inc.
PO Box 643
6368 West Quaker Street
Orchard Park, NY 14127
Australian Leukodystrophy Support Group, Inc.
54 Railway Road
Blackburn, VIC 3130
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Council for Bile Acid Deficiency Diseases
8 Hitching Post Place
Rockville, MD 20852
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Last Updated: 3/15/2011
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