label: Mevalonate Kinase Deficiency
label_lc: mevalonate kinase deficiency
description: A very rare autosomal recessive disorder of cholesterol biosynthesis. It is caused by a deficiency of the enzyme mevalonate kinase, resulting in the accumulation of mevalonic acid in the urine. Signs and symptoms include psychomotor retardation, ataxia, recurrent fevers, skin rash, hepatosplenomegaly, and lymphadenopathy.