Monarch Disease Ontology term MONDO_0009515 (Norum disease) is a form of lecithin-cholesterol acyltransferase deficiency (LCAT) characterized clinically by corneal opacities, hemolytic anemia, and renal failure, and biochemically by severely decreased HDL cholesterol and complete deficiency of the LCAT enzyme. Also known as: FLD, complete LCAT deficiency, lecithin acyltransferase deficiency, lecithin:cholesterol acyltransferase deficiency.