PCSK9 and familial hypercholesterolemia: The MeSH search used to obtain the articles was: (("Proprotein Convertase 9"[Majr]) OR "Proprotein Convertases/antagonists and inhibitors"[Majr]) AND ( "Hyperlipoproteinemia Type II/drug therapy"[Majr] OR "Hyperlipoproteinemia Type II/prevention and control"[Majr] OR "Hyperlipoproteinemia Type II/therapy"[Majr] ).