C1QTNF9 and type 2 diabetes mellitus: Circulating CTRP9 levels were significantly higher in CAD (202.03 ± 4.89), T2DM (191.38 ± 10.13) and CAD+T2DM (211.19 ± 6.81) patients (p < 0.001) compared to control individuals (148.7 ±4.0) (Fig 1A).