It has been reported that patients with hyperthyroidism are shown lower serum levels of VLDL-, LDL-, and HDL-cholesterols, apolipoprotein B (apoB), lipoprotein-α (Lpα) and proproteinconvertasesubtilisin/kexin type 9 (PCSK9) [35]. The gene discussed is PCSK9; the disease is hyperthyroidism.