| Summary: | Kai Wang,1,2,* Wenjun Xu,3,* Bingbing Zha,1 Jindong Shi,2 Guowei Wu,3 Heyuan Ding1,3 1Department of Endocrinology, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, People’s Republic of China; 2Department of Respiratory and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, People’s Republic of China; 3Department of Nephrology, Zhejiang Kaihua County Hospital of Chinese Medicine, Zhejiang, People’s Republic of China*These authors contributed equally to this workCorrespondence: Heyuan DingDepartment of Endocrinology, Shanghai Fifth People’s Hospital, Fudan University, 801 Heqing Road, Minhang District, Shanghai, 200240, People’s Republic of ChinaEmail heyuan.ding@fudan.edu.cnGuowei WuDepartment of Nephrology, Zhejiang Kaihua County Hospital of Chinese Medicine, 10 Zhongshan Road, Kaihua County, Zhejiang, 324399, People’s Republic of ChinaEmail kh22005@sohu.comPurpose: Diabetic kidney disease (DKD) is an inflammatory disease. This study aimed to investigate the association of fibrinogen to albumin ratio (FAR) with DKD.Patients and Methods: A total of 1022 type 2 diabetes mellitus (T2DM) patients with DKD and 1203 T2DM patients without DKD were enrolled in this study. Laboratory values including blood cell count, hemoglobin A1c, biochemical parameters, and fibrinogen and albumin creatinine ratio were recorded. Patients were classified according to tertile of admission FAR. Clinical parameters were compared between groups. Logistic regression, linear regression, ROC analysis and spline regression were carried out.Results: FAR in the DKD group was significantly higher than that in the non-DKD group. FAR had the highest odds ratio as an independent risk factor for the development of DKD and the highest area under ROC curve for predicting DKD compared with albumin (ALB) or fibrinogen (FIB) alone. Simple linear regression analyses revealed a significant and linear correlation of FAR with neutrophil and neutrophil-to-lymphocyte ratio. FAR was an independent risk factor for development of DKD. Spline regression showed that there was a significant linear association between DKD incidence and continuous FAR value when it exceeded 67.3mg/g.Conclusion: FAR is a stronger independent predictor of DKD than FIB and ALB. FAR is an independent risk factor for DKD development when it exceeded 67.3mg/g. FAR might be one of novel diagnostic biomarkers to predict and prevent DKD progression. However, a prospective study to validate the prognostic model is still needed.Keywords: type 2 diabetes mellitus, diabetic kidney disease, inflammation, fibrinogen to albumin ratio
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