What is (are) Norum disease ?
Norum disease is an autosomal recessive disorder of lipoprotein metabolism that causes a typical triad of diffuse corneal opacities, target cell hemolytic anemia, and proteinuria with renal (kidney) failure. Two clinical forms are recognized: familial LCAT deficiency and fish-eye disease. Familial LCAT deficiency is associated with a complete absence of alpha and beta LCAT activities and results in esterification anomalies involving both HDL (alpha-LCAT activity) and LDL (beta-LCAT activity).