Avasimibe (CI 1011) is a potent ACAT (Acyl-CoA:cholesterol acyltransferase) inhibitor. Avasimibe inhibits both ACAT1 and ACAT2 isoforms. Avasimibe was in development by Parke-Davis (now Pfizer) in the US for the treatment of atherosclerosis and hyperlipidaemia. Avasimibe was in phase III studies and more than 1300 patients had been treated for up to one year, however, in October 2003, Pfizer announced that development had been discontinued.

Cetaben has been identified as an anti-atherosclerotic hypolipidaemic substance. Cetaben is a unique, PPARα-independent peroxisome proliferator with hypolipidemic activity that inhibits cholesterol synthesis in the human hepatoma Hep-G2 cells resulting in reversible changes in Golgi morphology. Cetaben represents an exceptional type of peroxisome proliferator, specifically affecting peroxisomes, without having a negative influence on the processes of peroxisome biogenesis. Cetaben raised only the peroxisomal enzymes, acyl-CoA oxidase, glycerone-phosphate acyltransferase, D-amino-acid oxidase, catalase, and urate oxidase. Cetaben sodium has being shown to be an antiatherosclerotic agent.