Background –Chronic HCV infection is related not only to chronic kidney disease(CKD) but also accelerates renal deterioration. Treatment with Direct-acting antiviralagents (DAA) could slow renal function decline in some trials, but the long-termoutcomes of renal function changes following HCV elimination by DAA remainedinconclusive.
Methods – This retrospective study analyzed the data of HCV infected patients withCKD stage 3 who were treated with DAA and achieved sustained virologic response at12weeks after treatment (SVR12) during 2017-2020 at a single medical center.
Results – Among 130 HCV infection and CKD stage 3 patients treated with DAA, 77patients had no eGFR decline at SVR 12, and 53 patients had eGFR declined at SVR12. The eGFR change on SVR 12 can be predictor for eGFR change on SVR96 (Oddratio 3.088, p= 0.053). Patients with Diabetes Mellites (DM) (p=0.016, OR 2.6) ishighly associated with eGFR decline after DAA treatment. Renal functiondeterioration during DAA treatment is associated to long-term renal functiondecline(p=0.000). Lower HCV RNA titer(p=0.024), higher baseline MELD score(p=0.008), or con-current malignant disease under treatment(p=0.044) are more vulnerable to eGFR decrease upon DAA treatment.
Conclusion –Among patients with HCV infection and CKD stage 3, comorbidity withDM, have less benefit to renal function after HCV elimination by DAA. Higherbaseline HCV RNA viral load and MELD score are precipitating factors to the renalfunction impairment. Treatment to malignant disease, either by systemic or localizedtreatment, increases the risk of renal function impairment during DAA treatment.The eGFR change on SVR 12 can be used to predict long-term eGFR change for theCKD stage 3 patients.