Validation of 3 differentially expressed candidate miRNAs in coronary plasma between uLMCAD patients and non-CAD controls. Relative expression of miR-182-5p (A), miR-5187-5p (B) and miR-199a-5p (C) between 27 uLMCAD patients and 38 non-CAD controls by RT-qPCR, respectively. *, P<0.05. RT-qPCR, reverse transcription quantitative polymerase chain reaction; CAD, coronary artery disease; uLMCAD, unprotected left main coronary artery disease.