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3. Prevalence of cerebrotendinous xanthomatosis among patients diagnosed with early-onset idiopathic bilateral cataracts: final analysis.

Author

Freedman, Sharon F., Del Monte, Monte A., Diva, Ulysses, Donahue, Sean P., Drack, Arlene V., Dutta, Rana, Fung, Simon S.M., Imperiale, Michael, Jordan, Catherine O., Lenhart, Phoebe D., Lim, Maria E., McCourt, Emily A., Nihalani, Bharti R., Sabahi, Tarlan, Stahl, Erin D., Miraldi Utz, Virginia A., Wilson, M. Edward, Yen, Kimberly G., and VanderVeen, Deborah K.

Subjects
CATARACT, CLINICAL deterioration, GENETIC testing, BILE acids, SYMPTOMS
Abstract

Cerebrotendinous xanthomatosis (CTX) is a rare, autosomal recessive bile acid synthesis disorder caused by pathologic variants in CYP27A1 , a gene involved in bile acid synthesis. Impaired function in this gene leads to accumulation of plasma cholestanol (PC) in various tissues, often in early childhood, resulting in such clinical signs as infantile diarrhea, early-onset bilateral cataracts, and neurological deterioration. The current study aimed to identify cases of CTX in a population of patients with a greater CTX prevalence than the general population, to facilitate early diagnosis. Patients diagnosed with early-onset, apparently idiopathic, bilateral cataracts between the ages of 2 and 21 years were enrolled. Genetic testing of patients with elevated PC and urinary bile alcohol (UBA) levels was used to confirm CTX diagnosis and determine CTX prevalence. Of 426 patients who completed the study, 26 met genetic testing criteria (PC ≥ 0.4 mg/dL and positive UBA test), and 4 were confirmed to have CTX. Prevalence was found to be 0.9% in enrolled patients, and 15.4% in patients who met the criteria for genetic testing.▪ [ABSTRACT FROM AUTHOR]

Published
2023
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22. Reply

Author

Eibschitz-Tsimhoni, Maya, Tsimhoni, Omer, Archer, Steven M., and Del Monte, Monte A.

Published
2008
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