A mentally retarded woman with tendon xanthomata and normal serum cholesterol concentration was found to have raised cholestanol concentrations in the serum and in a xanthoma. This confirmed the diagnosis of cerebrotendinous xanthomatosis (CBX). No specific lipoprotein fraction was found to transport cholestanol. For the first time cultured fibroblasts from a patient with CBX were found to accumulate cholestanol.

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http://dx.doi.org/10.1007/BF01799999DOI Listing

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Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA. Electronic address:

Cerebrotendinous Xanthomatosis (CTX) is a treatable, inborn error of bile acids metabolism caused by pathogenic variants in CYP27A1. CTX is a multi-organ system disorder that progresses over decades. Clinical features include cerebellar dysfunction, pyramidal tract dysfunction, cognitive deficits and decline, peripheral neuropathy, chronic diarrhea, bilateral cataracts, and tendon xanthomas.

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