(a) Regression plot and correlation coefficient between PCSK9 levels and brachial vein endothelial expression of IL1β and (b) IL8. (c) Correlation matrices assessing the association between markers of psoriatic activity, lipids and brachial vein endothelial pro-inflammatory transcript expression (size and color indicate degree of correlation). hARP, human acidic ribosomal protein; human hsCRP, high-sensitivity C-reactive protein; IL, interleukin; IFN, interferon; LDL, low-density lipoprotein; PASI, psoriasis area and severity index; PCSK9, Proprotein convertase subtilisin/kexin type 9. TNF, tumor necrosis factor; Ecmean is the mean composite of all assessed vascular endothelial transcripts. Mean ± SEM.