CETP and infection: This is in accordance with the results of a previous hypothesis-driven study on COPD [61], also being similar to what has been reported in other entities, such as severe infections and sepsis, where most of the lipoproteins, lecithin, and lipid transporters (such as cholesterol acyltransferase and plasma cholesteryl ester transfer protein) seem to be decreased due to the inhibition of the reverse cholesterol transport [62].