It has been reported that circulatory IL‐6 level is correlated with microvascular complication in type 1 and type 2 diabetic patients 11, 12, 14, and higher serum IL‐6 and sIL‐6R concentrations are observed in type 2 diabetic patients with retinopathy compared with non‐diabetic subjects 12. The gene discussed is IL6; the disease is retinal disorder.