scholarly journals Access to new direct-acting antiviral agents against HCV infection: A view from Spain

2015 ◽  
Vol 5 (1) ◽  
pp. 22-23 ◽  
Author(s):  
Santiago Tomé ◽  
Esteban Otero
F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 223 ◽  
Author(s):  
Sara Sobhy Kishta ◽  
Reem El-Shenawy ◽  
Sobhy Ahmed Kishta

Recent improvements have been made in the treatment of hepatitis C virus (HCV) infection with the introduction of direct-acting antiviral agents (DAAs). However, despite successful viral clearance, many patients continue to have HCV-related disease progression. Therefore, new treatments must be developed to achieve viral clearance and prevent the risk of HCV-related diseases. In particular, the use of pitavastatin together with DAAs may improve the antiviral efficacy as well as decrease the progression of liver fibrosis and the incidence of HCV-related hepatocellular carcinoma. To investigate the management methods for HCV-related diseases using pitavastatin and DAAs, clinical trials should be undertaken. However, concerns have been raised about potential drug interactions between statins and DAAs. Therefore, pre-clinical trials using a replicon system, human hepatocyte-like cells, human neurons and human cardiomyocytes from human-induced pluripotent stem cells should be conducted. Based on these pre-clinical trials, an optimal direct-acting antiviral agent could be selected for combination with pitavastatin and DAAs. Following the pre-clinical trial, the combination of pitavastatin and the optimal direct-acting antiviral agent should be compared to other combinations of DAAs (e.g., sofosbuvir and velpatasvir) according to the antiviral effect on HCV infection, HCV-related diseases and cost-effectiveness.


F1000Research ◽  
2017 ◽  
Vol 5 ◽  
pp. 223
Author(s):  
Sara Sobhy Kishta ◽  
Sobhy Ahmed Kishta ◽  
Reem El-Shenawy

Recent improvements have been made in the treatment of hepatitis C virus (HCV) infection with the introduction of direct-acting antiviral agents (DAAs). However, despite successful viral clearance, many patients continue to have HCV-related disease progression. Therefore, new treatments must be developed to achieve viral clearance and prevent the risk of HCV-related diseases. In particular, the use of pitavastatin together with DAAs may improve the antiviral efficacy as well as decrease the progression of liver fibrosis and the incidence of HCV-related hepatocellular carcinoma. To investigate the management methods for HCV-related diseases using pitavastatin and DAAs, clinical trials should be undertaken. However, concerns have been raised about potential drug interactions between statins and DAAs. Therefore, pre-clinical trials using a replicon system, human hepatocyte-like cells, human neurons and human cardiomyocytes from human-induced pluripotent stem cells should be conducted. Based on these pre-clinical trials, an optimal direct-acting antiviral agent could be selected for combination with pitavastatin and DAAs. Following the pre-clinical trial, the combination of pitavastatin and the optimal direct-acting antiviral agent should be compared to other combinations of DAAs (e.g., sofosbuvir and velpatasvir) according to the antiviral effect on HCV infection, HCV-related diseases and cost-effectiveness.


2020 ◽  
Vol 22 (1) ◽  
pp. 71-80
Author(s):  
S.P. Lukashyk ◽  
I.A. Karpov ◽  
M.G. Siniauskaya ◽  
N.G. Danilenko ◽  
L.A. Anisko ◽  
...  

Objective. To determine the efficacy and safety of direct-acting antiviral agents (DAA) in patients with chronic HCV infection and UGT1A1*28 polymorphism. Materials and Methods. An open-label, non-randomized, observational study to assess efficacy and safety of DAA in patients (n = 143) with chronic hepatitis C (CHC) and liver cirrhosis and UGT1A1*28 polymorphism was performed. A total of 139 patients with chronic HCV infection were included in the efficacy analysis (absence of HCV RNA in blood by PCR) by the rate of sustained virologic response at week 12 (SVR12). Results. The SVR12 rate in patients with CHC and HCV-CP was 92.5% and 87.9%, respectively (p = 0.508), regardless of the presence of UGT1A1*28 polymorphism. The SVR12 rate in patients with chronic HCV infection and (TA)7/(TA)7 was 84.8%, with (TA)6/(TA)7 – 92.2% compared with (TA)6/ (TA)6 – 90,5% (p = 0.518). The rate of SVR12 in patients with CHC and (TA)7/(TA)7 or (TA)6/(TA)7 was 80% and 95%, respectively, with (TA)6/(TA)6 – 95.2%. The rate of SVR12 in patients with liver cirrhosis and (TA)7/(TA)7 or (TA)6/(TA)7 was 92.3% and 87.5%, respectively, with (TA)6/(TA)6 – 85.7%. The rate of SVR12 in patients with 12- and 24-week treatment duration was 88.2% and 96.6%, respectively (p = 0.30). As many as 96.2% of patients with the previous treatment with interferon and ribavirin had SVR12 compared to 88.5% of patients who have not previously taken antiviral drugs (p = 0.486). Grade 1 adverse events (AE) occurred in 24% of patients with chronic HCV infection treated with DAA; two patients developed Grade 4 AE. Conclusions. The treatment with DAA was shown to be effective and safe in patients with chronic HCV infection and UGT1A1*28 polymorphism.


F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 223 ◽  
Author(s):  
Sara Sobhy Kishta ◽  
Reem El-Shenawy ◽  
Sobhy Ahmed Kishta

Recent improvements have been made in the treatment of hepatitis C virus (HCV) infection with the introduction of direct-acting antiviral agents (DAAs). However, despite successful viral clearance, many patients continue to have HCV-related disease progression. Therefore, new treatments must be developed to achieve viral clearance and prevent the risk of HCV-related diseases. In particular, the use of pitavastatin together with DAAs may improve the antiviral efficacy as well as decrease the progression of liver fibrosis and the incidence of HCV-related hepatocellular carcinoma. To investigate the management methods for HCV-related diseases using pitavastatin and DAAs, clinical trials should be undertaken. However, concerns have been raised about potential drug interactions between statins and DAAs. Therefore, pre-clinical trials using a replicon system and human hepatocyte-like cells from human-induced pluripotent stem cells should be conducted. Based on these pre-clinical trials, an optimal direct-acting antiviral agent could be selected for combination with pitavastatin and DAAs. Following the pre-clinical trial, the combination of pitavastatin and the optimal direct-acting antiviral agent should be compared to other combinations of DAAs (e.g., sofosbuvir and velpatasvir) according to the antiviral effect on HCV infection, HCV-related diseases and cost-effectiveness.


2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Armando Calogero ◽  
Evangelista Sagnelli ◽  
Massimiliano Creta ◽  
Silvia Angeletti ◽  
Gaia Peluso ◽  
...  

Hepatitis C virus (HCV) infection unfavorably affects the survival of both renal patients undergoing hemodialysis and renal transplant recipients. In this subset of patients, the effectiveness and safety of different combinations of interferon-free direct-acting antiviral agents (DAAs) have been analyzed in several small studies. Despite fragmentary, the available data demonstrate that DAA treatment is safe and effective in eradicating HCV infection, with a sustained virologic response (SVR) rates nearly 95% and without an increased risk of allograft rejection. This review article analyzes the results of most published studies on this topic to favor more in-depth knowledge of the readers on the subject. We suggest, however, perseverating in this update as the optimal DAA regimen may not be proposed yet, because of the expected arrival of newer DAAs and of the lack of data from large multicenter randomized controlled trials.


2018 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Saman Mohazzab-Torabi ◽  
Fardin Dolatimehr ◽  
Heidar Sharafi ◽  
Mahdi Safi-Abadi ◽  
Mohammad Saeid Rezaee-Zavareh ◽  
...  

Author(s):  
Will Irving

Chronic hepatitis C (HCV) infection may be completely asymptomatic until the patient presents with complications of end-stage liver disease. Hence, anti-HCV testing should be performed on any patient with risk factors, which includes a raised alanine aminotransferase. Following diagnosis of chronic HCV infection, it is essential to know the genotype of the infecting virus, and whether or not the patient has underlying cirrhosis, as both of these factors will be important in determining the optimal therapeutic regimen. Direct-acting antiviral agents target 3 different viral non-structural proteins. The success of these drugs in achieving sustained virologic response (SVR) in well over 90% of patients in clinical trials has ended the era of interferon-based therapy for this infection. Therapy for most patients comprises one co/multiply-formulated tablet taken orally per day for 8 or 12 weeks.


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