tokens: Family members homozygous for CETP deficiency ( n = 10 ) had moderate hypercholesterolemia ( mean total cholesterol level [ + / - SD ] , 7 . 01 + / - 0 . 83 mmol per liter ) , markedly increased levels of HDL cholesterol ( 4 . 24 + / - 1 . 01 mmol per liter ) and apolipoprotein A - I , and decreased levels of low - density lipoprotein cholesterol ( 1 . 99 + / - 0 . 80 mmol per liter ) and apolipoprotein B .