National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Cerebrotendinous Xanthomatosis 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.
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 chenodeoxycholic acid. Deposits of cholesterol and cholestanol (a derivative of cholesterol) accumulate in the nerve cells and membranes potentially causing damage to the brain, spinal cord, tendons, lens of the eye and arteries. Affected individuals can experience diarrhea and cataracts in childhood and may develop benign, fatty tumors (xanthomas) of the tendons during adolescence. If untreated, CTX can lead to progressive neurologic problems in young adulthood such as seizures, ataxia and dementia. Coronary heart disease is common. Some individuals with the adult symptoms of CTX experienced prolonged cholestatic jaundice during infancy. The specific symptoms and progression of this disorder can vary greatly from one individual to another. Long-term therapy with chenodeoxycholic acid has been effective in treating affected individuals.
CTX was first described in the medical literature in1937. CTX is classified as a bile acid synthesis disorder (due to the underlying genetic mutation that causes deficiency in an important enzyme in the bile acid synthesis pathway; sterol 27-hydroxylase). Bile acids (chenodeoxycholic and cholic acid) are synthesized in the liver. They are an important component of bile and help the intestine to absorb fats. The disorder can also be classified as a lipid storage disorder (due to fat deposition in various tissues of the body) or a leukodystrophy (due to the involvement of central nervous system white matter).
CLIMB (Children Living with Inherited Metabolic Diseases)
176 Nantwich Road
Crewe, CW2 6BG
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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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
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Last Updated: 9/11/2014
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