PCSK9 and myocardial infarction: Similar to the OHGS sample, plasma PCSK9 levels were elevated in the 74 individuals with acute MI (445.0±171.7 ng/mL) compared to the 273 individuals with CAD but no MI (369.9±139.1 ng/mL, p = 3.7×10−4, after adjusting for variables, Figure 2).