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In page Low-density lipoprotein:

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  • PCSK9 inhibitors, in clinical trials, by several companies, are more effective for LDL reduction than the statins, including statins alone at high dose (though not necessarily the combination of statins plus ezetimibe).[citation needed] They have been approved and are recommended in patients not receiving enough reduction from their maximally tolerated dose of statins + ezetimibe.[1]
  • Statins reduce high levels of LDL particles by inhibiting the enzyme HMG-CoA reductase in cells, the rate-limiting step of cholesterol synthesis. To compensate for the decreased cholesterol availability, synthesis of LDL receptors (including hepatic) is increased, resulting in an increased clearance of LDL particles from the extracellular water, including of the blood.[2]