<qa>  What is the term for lipoprotein lipase deficiency?This study plans to learn more about measuring Lipoprotein lipase LPL activity in humans. LPL is an enzyme in the breakdown of certain types of fats into smaller parts. Lipoprotein lipase deficiency LPLD is a very rare genetic disorder in which lipoprotein enzyme is no longer functional. This can cause conditions known as high triglycerides in the blood and inflammation of the pancreas. 