FGF23 and chronic kidney disease: Since it was not possible in all cases to use the IMT as a differentiating factor related to CV risk, the following markers were proven to be related to both CKD and CVD, but the nature of such interaction could not be determined: CML, sRAGEs, carbamyl protein groups, protein carbamyl, hsCRP, total cholesterol, HDL-C, LDL-C, TG, IL-18, klotho, FGF-23, klotho/FGF-23, potassium, NT-proBNP, and AIP.