Cholesteryl Ester Transfer Protein Deficiency and Hyperalphalipoproteinemia.

Cholesteryl ester transfer protein (CETP) deficiency and lipoprotein phenotypes with CETP inhibitors were compared. The effects on atherosclerotic cardiovascular disease (ASCVD) and the recently suggested retinal disease of age-related macular degeneration (ARMD) were summarized and discussed in relation to CETP deficiency and extremely increased high-density lipoprotein (HDL) cholesterol levels (＞100 mg/dL). In CETP truncated variants leading to reduced low-density lipoprotein cholesterol levels, ASCVD risk was decreased in heterozygotes. ASCVD prevalence did not increase in homozygotes with CETP deficiency. However, the association between ASCVD and ARMD risks in cases of very high HDL cholesterol level found in multifactorial hyperalphalipoproteinemia needs to be clarified on an etiological basis. The hurdles facing the development of CETP inhibitors are summarized, including a new result for obicetrapib.