A number of other genes have shown specific association with eGFR, such as STC1 [23–26, 43], SLC22A2 [23, 24, 26, 31, 43] and WDR37 [23, 24, 26, 43, 49] are thought to be involved in creatinine secretion, rather renal function, therefore not being representative of CKD. Here, WDR37 is linked to chronic kidney disease.