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Longitudinal assessment of hepatic fibrosis in responders to direct-acting antivirals for recurrent hepatitis C after liver transplantation using noninvasive methods.
Clinical Transplantation 2018 August
Successful eradication of recurrent hepatitis C virus (HCV) infection following liver transplantation (HCV) improves graft survival. This study aimed at evaluation of hepatic fibrosis changes among long-term responders to DAA therapy for recurrent HCV after liver transplantation using noninvasive methods. Patients with significant hepatic fibrosis (≥F2) who achieved SVR12 after treatment with DAAs for recurrent HCV were included (n = 52). Hepatic fibrosis status was assessed, noninvasively, by calculation of fibrosis-4 score (FIB-4) and Aspartate Aminotransferase Platelet Ratio Index (APRI) and by measurement of graft stiffness using FibroScan at baseline and 12 and 18 months post-treatment. Acoustic radiation force imaging (ARFI) was done for all patients 12 and 18 months post-treatment. Patients were classified into two groups based on baseline liver stiffness measurement (LSM) by FibroScan; significant fibrosis (F2; n = 28) and advanced fibrosis groups (≥F3). Over 18-month follow-up period, there was serial improvement of FIB-4, APRI, and LSM by FibroScan in both groups. Higher baseline LSM and delayed initiation of antiviral therapy were significant predictors of lack of fibrosis regression (P-value 0.01 and 0.04, respectively). Fibroindices and LSM improved over time in liver transplant recipients who responded to DAAs. Baseline LSM can predict post-treatment fibrosis regression.
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