Novel Mutation in a Patient with Cholesterol Ester Storage Disease

الملخص EN

Cholesterol ester storage disease (CESD) is a chronic liver disease that typically presents with hepatomegaly.

It is characterized by hypercholesterolemia, hypertriglyceridemia, high-density lipoprotein deficiency, and abnormal lipid deposition within multiple organs.

It is an autosomal recessive disease that is due to a deficiency in lysosomal acid lipase (LAL) activity, which is coded by the lysosomal acid lipase gene (LIPA).

We describe the case of a 5-year-old south Asian female incidentally found to have hepatomegaly, and subsequent workup confirmed the diagnosis of CESD.

DNA sequencing confirmed the presence of a novel hepatic mutation.

It is a four-nucleotide deletion c.57_60delTGAG in exon 2 of the LIPA gene.

This mutation is predicted to result in a premature translation stop downstream of the deletion (p.E20fs) and, therefore, is felt to be a disease-causing mutation.