Direct-acting antivirals improve kidney function in diabetic patients with HCV infection and chronic kidney disease.

Abstract

After direct-acting antiviral (DAA)approval, a larger number of diabetic patients with chronic HCV infection have been treated. Cardiovascular risk and insulin resistance significantly change after successful clearance of HCV. Therefore, HCV therapy could potentially improve diabetes microvascular complications including nephropathy. We assessed kidney function after antiviral treatment completion in diabetic (N = 96) and non-diabetic patients (N = 187). Assessment of renal function was performed by serum creatinine and estimated glomerular filtration rate (eGFR) at baseline, at treatment completion and 12weeks after treatment. Subgroup analysis by age, DAA regimen and eGFR stage at baseline was performed. Serum creatinine did not change significantly at any time whereas eGFR significantly improved during time in diabetic patients (baseline 83.7ml/min/1.73m2 vs 102.6ml/min/1.73m2 at 12weeks after treatment completion; p = 0.028). Subgroup analysis showed that the improvement was observed particularly in old people with eGFR < 60ml/min/1.73m2. Antiviral regimens did not impact the eGFR values. Sixteen percent of diabetic patients improved their kidney function during treatment (vs 14.4% of non-diabetic patients) showing a one category change in eGFR. No acute kidney injury events were recorded in our cohort. Our study suggests that DAAs improve renal function in HCV diabetic patients with eGFR < 60ml/min/1.73m2 or aged ≥ 65years independently from antiviral regimen.