BACKGROUND & AIMS: The results of post-transplant antiviral therapy for recurrent hepatitis C virus (HCV) are poor, and significant pre-transplant predictors for sustained viral response (SVR) have not yet been identified. METHODS: Pegylated interferon/ribavirin therapy was performed for more than 48 weeks in 50 patients who underwent liver transplantation (LT) for HCV genotype 1-related liver disease. Of these, 22 patients achieved SVR. The predictive potential of the viral mutations, including amino acids (aa) 70 and 91 in the Core region, interferon sensitivity-determining region (ISDR, aa 2209-2248) and interferon/ribavirin resistance-determining region (IRRDR, aa 2334-2379) in NS5A, was evaluated. RESULTS: In 16 patients, the sequences in the pre- and post-transplant samples were the same, except for aa 70 in the Core of 1 patient. The SVR achievement percentage was significantly lower in the Non-double wild (DW) at aa 70 and 91, the ISDR<2 and IRRDR<6 groups than in the DW (30% vs. 65%, p=0.015), the ISDR2 (35% vs. 69%, p=0.035) and IRRDR6 (25% vs. 78%, p<0.001) groups, respectively. Predictive scoring with these three items provides a newly established and significant predictor for SVR after LT (p=0.015). CONCLUSION: DW, ISDR2 and IRRDR6 were found to be significant predictors for SVR after LT. In addition, it is possible that the establishment of a new scoring system consisting of these three factors may be a useful marker to predict interferon sensitivity for recurrent HCV after LT. Copyright (c) 2010 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.
BACKGROUND & AIMS: The results of post-transplant antiviral therapy for recurrent hepatitis C virus (HCV) are poor, and significant pre-transplant predictors for sustained viral response (SVR) have not yet been identified. METHODS: Pegylated interferon/ribavirin therapy was performed for more than 48 weeks in 50 patients who underwent liver transplantation (LT) for HCV genotype 1-related liver disease. Of these, 22 patients achieved SVR. The predictive potential of the viral mutations, including amino acids (aa) 70 and 91 in the Core region, interferon sensitivity-determining region (ISDR, aa 2209-2248) and interferon/ribavirin resistance-determining region (IRRDR, aa 2334-2379) in NS5A, was evaluated. RESULTS: In 16 patients, the sequences in the pre- and post-transplant samples were the same, except for aa 70 in the Core of 1 patient. The SVR achievement percentage was significantly lower in the Non-double wild (DW) at aa 70 and 91, the ISDR<2 and IRRDR<6 groups than in the DW (30% vs. 65%, p=0.015), the ISDR2 (35% vs. 69%, p=0.035) and IRRDR6 (25% vs. 78%, p<0.001) groups, respectively. Predictive scoring with these three items provides a newly established and significant predictor for SVR after LT (p=0.015). CONCLUSION: DW, ISDR2 and IRRDR6 were found to be significant predictors for SVR after LT. In addition, it is possible that the establishment of a new scoring system consisting of these three factors may be a useful marker to predict interferon sensitivity for recurrent HCV after LT. Copyright (c) 2010 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.
Authors: Mahmoud Abdel-Aty; Mahmoud Fouad; Mohammad M Sallam; Elsayed A Elgohary; Ali Ismael; Abdallah Nawara; Baha Hawary; Mohammed Tag-Adeen; Salama Khaled Journal: Medicine (Baltimore) Date: 2017-01 Impact factor: 1.889
Authors: Rossana C Jaspe; Yoneira F Sulbarán; Maria Z Sulbarán; Carmen L Loureiro; Hector R Rangel; Flor H Pujol Journal: Virol J Date: 2012-09-21 Impact factor: 4.099