ZNF503 and diabetic retinopathy: During the follow-up, diabetic retinopathy was diagnosed in 34 cases (24 cases and 10 cases in high and low ZNF503-AS1 expression group, respectively), diabetic lung diseases in 23 cases (13 cases in high and 10 cases in low-expression groups, respectively), diabetic heart disease in 35 cases (11 cases and 14 cases in high and low ZNF503-AS1 expression groups, respectively), and diabetic nephropathy in 44 cases (20 cases and 24 cases in high and low ZNF503-AS1 expression groups, respectively).