Lipoprotein Lipase Defects (2) These defects usually result in marked hypertriglyceridaemia in early childhood due to the inability to hydrolyse triglycerides in ingested milk. Occasionally, affected individuals present for the first time in adult life. Genetic defects in LPL of apo CII result in grossly impaired clearance of exogenous and endogenous triglycerides and the features of the chlyomicronaemia syndrome. See also: • Chlyomicronaemia Syndrome