Cerebrotendinous xanthomatosis (CTX) is a rare autosomal recessive genetic disorder caused by an abnormality in the CYP27A1 gene, resulting in a deficiency. Disease definition. Cerebrotendinous xanthomatosis (CTX) is an anomaly of bile acid synthesis (see this term) characterized by neonatal cholestasis. Cerebrotendinous xanthomatosis is a rare inherited lipid-storage disease characterized clinically by progressive neurologic dysfunction (cerebellar ataxia.
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Large deposits of cholesterol and cholestanol are found in virtually every tissue, particularly the Achilles tendons, brain, and lungs.
Assay of intermediates in bile acid biosynthesis using isotope dilution—mass spectrometry: Symptoms of the following disorders can be derebrotendinous to those of CTX. Sometimes novel unknown mutations are uncovered by genetic testing and in these cases biochemical testing will confirm the biochemical defect is present.
In fibroblasts from 3 patients with CTX, hydroxylation proceeded at a rate only 0.
CCC ]. The family histories also revealed fetal and neonatal deaths among sibs of CTX patients. Fleck lenticular deposits may be an early sign of CTX.
Cerebrotendinous Xanthomatosis (CTX)
Chronic diarrhea and juvenile cataracts: CC HPO: Plasma cholesterol concentration may be low or normal. Specialised Social Services Eurordis directory. Study of a family with cerebrotendinous xanthomatosis: More than patients have been reported worldwide. Some patients show intellectual impairment from infancy, but most have normal or subnormal intellectual function until puberty. In untreated patients, life expectancy cerebeotendinous 50 to 60 years. Harlan and Still described black brother and sister with multiple tendinous and tuberous xanthomas despite plasma lipids that were quantitatively and qualitatively normal.
Berginer VM et al. These patients develop irregular cortical opacities, anterior polar cataracts, or dense posterior subscapular cataracts. Berginer and Abeliovich observed 6 patients from 3 Moroccan Sephardic Jewish families.
Rare Disease Database
Bile alcohols are formed in an abnormal pathway that generates cereebrotendinous cholic acid in CTX. Infobox medical condition new Pages using infobox medical condition with unknown parameters. A bonus to all MIMmatch users is the option to sign up for updates on new gene-phenotype relationships. Cholestanol deposits can accumulate in nerve cells and membranes and cause damage to the brain, spinal cord, tendons, lens of the eye and arteries.
Patients may experience extrapyramidal manifestations dystonia and atypical parkinsonismand peripheral neuropathy.
OMIM Entry – # – CEREBROTENDINOUS XANTHOMATOSIS; CTX
Van Bogaert et al. This may begin when the affected individual is still an infant. Depending upon the functions of the particular protein, this can affect many organ systems of the body, including the brain. Bottom two images show fleck opacities and anterior opacities of the crystalline lens in the right eye of a 10 year old affected with CTX.
Population screening in a Druze community: Because of the differences in expression of CTX, Berginer and Abeliovich recommended serum cholestanol studies in cases of undiagnosed cataract or tendinous xanthomas in childhood or early adolescence.
cerebrotendonous Hereditary tendinous and tuberous xanthomatosis without hyperlipidemia: Bile acid therapies applied to patients suffering from cerebrotendinous xanthomatosis. First-line treatment is based on chenodeoxycholic acid CDCA replacement therapy, which normalizes BAS and cholestanol concentrations, and improves neurological symptoms. During CT scanning, a computer and x-rays are used to create a film showing cross-sectional images of certain tissue structures.
Long-term treatment of cerebrotendinous xanthomatosis with chenodeoxycholic acid.
The documents contained in this web site are presented for information purposes only. The prevalence of CTX in the US population is estimated to be as high as 3 to 5 per , predicting a minimum number of 8, affected individuals.