APOE and lipoprotein glomerulopathy: For the first time APOE‐Osaka/Kurashiki and APOE‐Chicago mutations reported in Chinese; Lipoprotein glomerulopathy (LPG) patients with urine protein remission had slower renal function decrease; LPG was associated with higher blood pressure; Serum apoE levels were higher in patients with low‐density lipoprotein receptor binding region mutations of APOE