C1QTNF9 and chronic kidney disease: In the present study, the plasma CTRP9 levels were associated with systolic hypertension, renal dysfunction, and metabolic dysregulation (e.g., obesity, high triglyceride level, and low HDL-cholesterol level) in the CKD group, whereas no parameter other than age and systolic BP was correlated with CTRP9 levels in the non-CKD group (Supplementary Table 1).