The (TTA)n repeat polymorphism in the gene for HMG-CoA reductase could be another genetic marker that plays a role in the genetic determination of cholesterolaemia.
The genetic background of polygenic hypercholesterolemia was studied in hypercholesterolemic children consuming a diet identical to control individuals with low cholesterol concentrations. Significantly higher frequencies of “disadvantage” alleles, usually combined with a higher LDL cholesterol, were found in hypercholesterolemic individuals when polymorphisms in apolipoprotein E, apolipoprotein B — XbaI and LDL receptor — PvuII were studied.
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