FGF21 and chronic kidney disease: KIM-1 - kidney injury molecule-1. NGAL - neutrophil gelatinase-associated lipocalin. L-FABP - liver-type fatty acid-binding protein. FGF23 - fibroblast growth factor 23. TNFR1/TNFR2 - tumour necrosis factor receptor 1/tumour necrosis factor receptor 2. ADM - adrenomedullin. FGF21 - fibroblast growth factor 21. VEGF - vascular endothelial growth factor. TGFβ-1 - transforming growth factor beta 1. SDMA/ADMA - symmetric dimethylarginine/asymmetric dimethylarginine. MMPs - Matrix metalloproteinases. CKD273 - chronic kidney disease classifier 273.