Efficacy and safety of ombitasvir/paritaprevir/ritonavir-based therapy in HCV patients with chronic kidney disease.

BACKGROUND AND STUDY AIMS: Hepatitis C virus (HCV) prevalence inchronic kidney disease (CKD) patients is significantly higher than in the general population. This study evaluated the efficacy and safety of combined ombitasvir/paritaprevir/ritonavir-based therapy in HCV patients with renal impairment. PATIENTS AND METHODS: Our study included 829 patients with normal kidney functions (group 1) and 829 patients with CKD (group 2),which were subdivided into patients not requiring dialysis (group 2a) and those on hemodialysis (group2b). Patients received regimens of ombitasvir/paritaprevir/ritonavir with or without ribavirin or sofosbuvir/ombitasvir/paritaprevir/ritonavir with or without ribavirin for 12 weeks. Clinical and laboratory assessment was done before treatment, and patients were followed up for12 weeks after treatment. RESULTS: The sustained virological response (SVR) at week 12 was significantly higher in group 1 than in the other three groups/subgroups, being 94.2% vs 90.2%, 90%, and 90.7%, respectively. The regimen with the highest SVR was ombitasvir/paritaprevir/ritonavir with ribavirin. The most common adverse event was anemia, which was more common in group 2. CONCLUSION: Ombitasvir/paritaprevir/ritonavir-based therapy in chronic HCV patients with CKD is highly effective, with minimal side effects despite ribavirin-induced anemia.

Identifying Different Mutation Sites Leading to Resistance to the Direct-Acting Antiviral (DAA) Sofosbuvir in Hepatitis C Virus Patients from Egypt.

The hepatitis C virus (HCV) is a major global health challenge and a leading cause of morbidity and mortality. Many direct-acting antivirals (DAAs) target essential macromolecules involved in the virus' life cycle. Although such DAAs achieve great success in reducing the viral load in genotype 1 infections, other genotypes demonstrate different levels of response. This study focused on mutation sites associated with patients with genotype 4a infections that failed to respond to treatment with sofosbuvir. The genotyping of HCV samples from patients with virological failure, and responder patients, was conducted using Geno2Pheno webserver-based full NS5B sequences. We constructed 3D structural models for all the samples and used structural analysis to investigate the effect of amino acid substitution on the observed resistance to SOF-based treatment, and the docking of sofosbuvir into the active sites of the 10 models was performed. Finally, 10 molecular dynamic (MD) simulation experiments were conducted to compare the stability of the 3D models of the resistant samples against the stability of the 3D models of the responder samples. The results highlighted the presence of HCV subtype 4a in all ten samples; in addition, an amino acid (aa) substitution in the palm region may hinder HCV polymerase activity. In this study, we provide evidence that a mutation in the NS5B gene that induces resistance to sofosbuvir in patients with the S282T/C/R mutant virus is present in the Egyptian population. Overall, the docking and MD results support our findings and highlight the significant impact of the identified mutations on the resistance of HCV NS5B RNA-dependent RNA polymerase to direct-acting antivirals (DAAs).

Determining the lower limit of detection required for HCV viral load assay for test of cure following direct-acting antiviral-based treatment regimens: Evidence from a global data set.

Achieving global elimination of hepatitis C virus requires a substantial scale-up of testing. Point-of-care HCV viral load assays are available as an alternative to laboratory-based assays to promote access in hard to reach or marginalized populations. The diagnostic performance and lower limit of detection are important attributes of these new assays for both diagnosis and test of cure. Therefore, our objective was to determine an acceptable LLoD for detectable HCV viraemia as a test for cure, 12 weeks post-treatment (SVR12). We assembled a global data set of patients with detectable viraemia at SVR12 from observational databases from 9 countries (Egypt, the United States, United Kingdom, Georgia, Ukraine, Myanmar, Cambodia, Pakistan, Mozambique) and two pharmaceutical-sponsored clinical trial registries. We examined the distribution of HCV viral load at SVR12 and presented the 90th, 95th, 97th and 99th percentiles. We used logistic regression to assess characteristics associated with low-level virological treatment failure (defined as <1000 IU/mL). There were 5973 cases of detectable viraemia at SVR12 from the combined data set. Median detectable HCV RNA at SVR12 was 287,986 IU/mL. The level of detection for the 95th percentile was 227 IU/mL (95% CI 170-276). Females and those with minimal fibrosis were more likely to experience low-level viraemia at SVR12 compared to men (adjusted odds ratio AOR = 1.60 95% confidence interval [CI] 1.30-1.97 and those with cirrhosis (AOR = 1.49 95% CI 1.15-1.93). In conclusion, an assay with a level of detection of 1000 IU/mL or greater may miss a proportion of those with low-level treatment failure.

The egyptian clinical practice guidelines for the diagnosis and management of metabolic associated fatty liver disease.

The landscape of chronic liver disease in Egypt has drastically changed over the past few decades. The prevalence of metabolic-associated fatty liver disease (MAFLD) has risen to alarming levels. Despite the magnitude of the problem, no regional guidelines have been developed to tackle this disease. This document provides the clinical practice guidelines of the key Egyptian opinion leaders on MAFLD screening, diagnosis, and management, and covers various aspects in the management of MAFLD. The document considers our local situations and the burden of clinical management for the healthcare sector and is proposed for daily clinical practical use. Particular reference to special groups was done whenever necessary.

The NAFLD-MAFLD debate: Eminence vs evidence.

Debates are inevitable in science and could be a powerful tool for addressing controversial topics as it promotes critical thinking and inspires individuals to consider alternate viewpoints. However, debates can help only to identify the issues that need to be clarified to address this question, but it can never help resolve the controversy itself. In the era of evidence-based medicine, the need for an evidence-based debate is mandatory. Polarising opinions and major debate have recently arisen in hepatology on the nomenclature and diagnostic criteria for fatty liver disease associated with metabolic dysfunction (non alcoholic fatty liver disease [NAFLD]-metabolic (dysfunction) associated fatty liver disease [MAFLD] debate). The aim of this viewpoint is to suggest a way to settle the debate through evidence. Descriptive review using PubMed to identify literature on the evidence and eminence-based medicine and studies comparing MAFLD and NAFLD criteria. The emerging studies comparing the performance of diagnostic criteria of NAFLD and MAFLD represent the dawn of a new era for reframing the ongoing debate by acquisition of the mandatory evidence that will both resolve the debate and lead to novel avenues of research. In conclusion, the time has come to hold debate and focus on gathering and building the evidence to settle it. It does not matter who wins the debate and once there is robust evidence, we should all follow it wherever it leads.

Assessment of facility performance during mass treatment of chronic hepatitis C in Egypt: Enablers and obstacles.

BACKGROUND: The national committee for control of viral hepatitis (NCCVH) in Egypt, settled by the Ministry of health, treated over one million patients in around 60 centers with chronological changes in drug combinations. This research aims to study the health care facilities and services provided by NCCVH treatment centers in Egypt and explore hinders faced. METHODS: A cross-sectional operational research study. Multistage random sampling technique was applied for Egyptian governorates. From each stratum one governorate was chosen from which one center was randomly selected. Quality of recorded data for each center in the central server (Data-oriented parameter), newly designed score to assess the overall performance of the centers was retrieved from computer based recording system. A self-administered questionnaire was completed by the centers head. RESULTS: This study included 24 treatment centers from urban, rural areas, Upper and Lower Egypt. The Upper centers showed the best completeness of follow-up records and the least compliance rates. None of the centers had 100% completeness of follow-up data. Proportion of SVR is minimally less than proportion of patient with known outcome in all treatment centers. A novel indicator standardizing the comparisons of performance of different facilities was introduced: Total number of physicians/total number of SVR patients with completed records. The highest response rate: Monfiya Governorate (Lower Egypt), Aswan (Upper Egypt), Completeness of follow-up records: Kalyoubia (Lower Egypt), Sohag governorate (Upper Egypt). The average administrative score was 64%. CONCLUSION: Challenges of NCCVH program: overcrowdings, resistant sociocultural background among rural patients, limited accessibility for internal migrants and incompleteness of data entry are system lacking points. Strengths include, clear patient pathway, well-established database online application, well-trained physicians and treatment availability.

High SVR rate following retreatment of non-sustained virological responders to sofosbuvir based anti-HCV therapies regardless of RAS testing: A real-life multicenter study.

Aim: Evaluation of the efficacy and safety of sofosbuvir/daclatasvir/ribavirin (SOF/DCV/RBV) in treating non-sustained virological responders (non-SVR12) to prior sofosbuvir-based therapy, in absence of RAS testing in mass treatment, and determination of the optimal timing to start re-treatment. Methods: Real-life prospective observational study included prior non-responders to 24-weeks SOF-RBV (n = 679, 67%) or 12-weeks SOF- RBV- PEG (n = 335, 33%). Patients were re-treated with daily SOF/DCV/RBV for 12 (n = 270) or 24 weeks (n = 744). The primary efficacy endpoint was SVR12. The primary safety endpoints were reported adverse events (AEs) from baseline to SVR12 time point. Results: We included 1,014 patients [age 52 ± 9 years, 58.48% men]. Cirrhosis was documented in 46.98% and 27.5% of SOF-RBV and SOF-RBV-PEG non-responders respectively. Overall, SVR12 was 90.6% [92.2% for 12 weeks therapy and 90.05% for 24 weeks therapy]. Mild AEs occurred in 5.13% (n=52) and 3.1% (n=32) discontinued treatment including eight on-treatment mortalities. Higher baseline FIB-4 and shorter interval before starting retreatment (<6 months) were independent predictors of non-SVR12 on multivariate regression analysis. Conclusion: SOF/DCV/RBV is an effective and safe treatment option for non-responders to prior sofosbuvir-based therapy. Six months interval before retreatment is optimal for achieving favorable SVR.

Efficacy and safety of sofosbuvir-based therapy in hepatitis C virus recurrence post living donor liver transplant: A real life egyptian experience.

BACKGROUND AND AIM: Direct acting antiviral has offered treatment of hepatitis C virus (HCV) recurrence post liver transplantation (LT) with an all-oral regimen for short duration, excellent safety profile, and high sustained virological response (SVR). The aim of this study was to evaluate the efficacy and safety of sofosbuvir (SOF)-based regimens in the real world among a cohort of Egyptian patients with recurrent HCV post living donor LT (LDLT). METHODS: Patients with HCV-G4 recurrence post-LDLT were recruited from National Committee of Control of Viral Hepatitis, Egypt, from November 2014 to May 2017. They received different SOF-based regimens according to the treatment protocols available during this period. Patients' outcome and Adverse effects (AE) were evaluated. RESULTS: One hundred ninety patients (170 males, mean age 56.8 ± 7.9 years) were included. Calcineurin inhibitors were the main immunosuppression used (173 patients). Out of 190, 119 (62.6%) received SOF/ribavirin (RBV), 38 (20%) SOF/simeprevir (SMV), 22 (11.6%) SOF/daclatasvir (DSV)/ ± RBV, and 11 (5.8%) received SOF/LDV/ ± RBV. Overall SVR12 was 89.5%, 84.9% in SOF/RBV group, 94.7% in SOF/SMV, 100% in SOF/DCV, and 100% in SOF/LDV with no statistically significant difference ( P = 0.104). The AE reported were as follows: anemia (n = 65, 34.4%) mainly in SOF/RBV group, transient hyperbilirubinemia during SOF/SMV in 13 patients (34%), mild Acute cellular rejection in eight patients (4.2%), and hepatocellular carcinoma in two patients (1%) mainly driven by underlying liver condition. Two deaths were unlikely related to HCV therapy. CONCLUSION: Different SOF-based regimens were effective with high SVR12 rates in a difficult-to-treat population, recurrent HCV post LDLT.

Longitudinal assessment of hepatic fibrosis in responders to direct-acting antivirals for recurrent hepatitis C after liver transplantation using noninvasive methods.

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.

Hepatitis C virus treatment by direct-acting antivirals in successfully treated hepatocellular carcinoma and possible mutual impact.

BACKGROUND AND AIMS: Treatment of hepatitis C virus (HCV) after successfully treated hepatocellular carcinoma (HCC) becomes possible with the introduction of direct-acting antivirals because of their favorable efficacy, safety, and short period of treatment. Few data are available on the results of treatment using different direct-acting antiviral regimens in successfully treated HCC and a lot of debate about its role in tumor recurrence. METHODS: Sixty-two HCV-related HCC patients were enrolled in the study after successfully treated HCC; the studied population included either Child-Pugh 'A' or 'B7'. The patients were subcategorized to receive one of the following regimens: group 1: sofosbuvir (SOF)+ribavirin (RBV) for 24 weeks, group 2: SOF+simeprevir for 12 weeks, group 3: SOF+daclatasvir for 24 weeks, and group 4: SOF+daclatasvir+RBV for 12 weeks. The overall median follow-up period is 12 months after treatment initiation. RESULTS: All treatment regimens were tolerable for all patients, with no reported major adverse events during treatment. The overall sustained virologic response rate was 64.5%, with the highest result in group 4 and the lowest result in group 1; 87.5 and 26.7%, respectively. HCC recurrence was observed in 42% of patients; 80.7% of these patients developed recurrence within 6 months of treatment initiation. CONCLUSION: Treatment of HCV in successfully treated HCC is feasible, with the best results achieved using multiple direct-acting antivirals and RBV; a high rate of HCC recurrence was observed, especially within the first 6 months of treatment initiation (ClinicalTrials.gov no: NCT02771405).

Effect of treatment with direct acting antivirals on body mass index and hepatic steatosis in chronic hepatitis C.

Direct Acting Agents (DAAs) have high cure rate but still lack the knowledge of their effect on hepatic steatosis in chronic hepatitis C (CHC). Controlled Attenuation Parameter (CAP), evaluated with transient elastography, could help in assessment of steatosis grades. We aim to evaluate the effect of DAAs on BMI and steatosis in CHC using CAP. This cohort study included 155 CHC Egyptian patients divided into three groups according to the DAAs regimens. All patients were subjected to pre-treatment and 3-months post-treatment evaluation including BMI, laboratory workup and liver stiffness measurement with simultaneous CAP determination using the (FibroScan®) M probe. Patients mean age was 45.78 ± 11.6 years, 60.6% were females, mean BMI 26.63 ± 2.75 and 18.1% were cirrhotic. Baseline assessment revealed no steatosis in 43.9%, 32.9% had mild-moderate steatosis and 23.2% had severe steatosis. The overall sustained virological response 12 was 93.6%. Follow-up revealed stationary steatosis in 56.7% of patients and regression in 21.3%. Mean pre-treatment CAP were significantly lower in responders 244.9 ± 62.4 dB/m versus non-responders; 300 ±28.4 dB/m (P = 0.04). ROC curve delineated 273 dB/m as best cutoff for detection of responders with an AUC of 0.801, sensitivity 68.2%, and specificity 100%. BMI significantly increased after treatment (P = 0.004) particularly in patients with worsened steatosis (P = 0.001). Steatosis significantly correlated with BMI (r = 0.3, P value = < 0.001). DAAs causes a significant change in steatosis grade in a subset of treated patients. Pretreatment CAP was significantly lower in responders. BMI significantly increases following treatment particularly in patients with worsened steatosis.

Novel scores combining AFP with non-invasive markers for prediction of liver fibrosis in chronic hepatitis C patients.

Serum levels of alpha-fetoprotein (AFP) were reported to increase in patients with significant or advanced hepatic fibrosis. Combination of non-invasive tests decreases the use of liver biopsy in large proportion of chronic HCV patients. The aim of the study was to compare and combine AFP with commonly used non-invasive fibrosis tests in novel scores for prediction of different stages of hepatic fibrosis. Six hundred and fifty two treatment naïve chronic hepatitis C patients were enrolled. Demographic data, basic pre-treatment laboratory tests including complete blood count (CBC), liver biochemical profile and renal functions test, international normalized ratio (INR) in addition to AFP, liver stiffness measurement (LSM) by Fibroscan and liver biopsies were retrospectively analyzed. AST to Platelet Ratio Index (APRI) and FIB-4 scores were calculated. Different predictive models using multivariate logistic regression analysis were generated and presented in equations (scores) composed of a combination of AFP, LSM plus FIB-4/APRI scores. AFP was correlating significantly with LSM, FIB-4, and APRI scores. Areas under receiver operating characteristic curves (AUROCs) for predicting significant hepatic fibrosis, advanced hepatic fibrosis, and cirrhosis were 0.897, 0.931, and 0.955, respectively, for equations (scores) containing AFP, LSM, and FIB-4. AUROCs for predicting significant hepatic fibrosis, advanced hepatic fibrosis and cirrhosis were 0.897, 0.929, and 0.959, respectively, for equations (scores) containing AFP, LSM, and APRI. The study shows that combining AFP to serum biomarkers and LSM increases their diagnostic performance for prediction of different stages of liver fibrosis.

Establishing ultrasound based transient elastography cutoffs for different stages of hepatic fibrosis and cirrhosis in Egyptian chronic hepatitis C patients.

BACKGROUND AND STUDY AIM: Transient elastography is widely used to assess fibrosis stage in chronic hepatitis C (CHC). We aimed to establish and validate different transient elastography cut-off values for significant fibrosis and cirrhosis in CHC genotype 4 patients. PATIENTS AND METHODS: The data of 100 treatment-naive CHC patients (training set) and 652 patients (validation set) were analysed. The patients were subjected to routine pretreatment laboratory investigations, liver biopsy and histopathological staging of hepatic fibrosis according to the METAVIR scoring system. Transient elastography was performed before and in the same week as liver biopsy using FibroScan (Echosens, Paris, France). Transient elastography results were correlated to different stages of hepatic fibrosis in both the training and validation sets. RESULTS: ROC curves were constructed. In the training set, the best transient elastography cut-off values for significant hepatic fibrosis (≥F2 METAVIR), advanced hepatic fibrosis (≥F3 METAVIR) and cirrhosis (F4 METAVIR) were 7.1, 9 and 12.2 kPa, with sensitivities of 87%, 87.5% and 90.9% and specificities of 100%, 99.9% and 99.9%, respectively. The application of these cut-offs in the validation set showed sensitivities of 85.5%, 82.8% and 92% and specificities of 86%, 89.4% and 99.01% for significant hepatic fibrosis, advanced hepatic fibrosis and cirrhosis, respectively. CONCLUSION: Transient elastography performs well for significant hepatic fibrosis, advanced hepatic fibrosis and cirrhosis, with validated cut-offs of 7.1, 9 and 12.2 kPa, respectively, in genotype 4 CHC patients.

Hemochromatosis Gene Polymorphism as a Predictor of Sustained Virological Response to Antiviral Treatment in Egyptian Chronic Hepatitis C Patients.

AIM: The aim of this article is to assess HFE C282Y gene mutations as a predictor of sustained virological response (SVR) to anti-hepatitis C virus (HCV) treatment in Egyptian patients. MATERIALS AND METHODS: One hundred and forty chronic hepatitis C (CHC) patients were divided into two groups: 70 patients achieved SVR and 70 patients were nonresponders (NRs). All patients were subjected to quantitative polymerase chain reaction (PCR) at baseline, 12 and 24 weeks after therapy commencement. Deoxyribonucleic acid (DNA) sequencing for HFE (C282Y) was done by restriction fragment length polymorphism PCR. RESULTS: Sixty five patients did not have mutation and 5 patients had C282Y mutation (GA) with SVR. While 45 NRs had heterozygous C282Y mutation (GA), 4 patients (5.7%) had homozygous mutation (AA) and 21 patients (30%) had no mutation (GG). The parameters of elevated iron [transferrin saturation (TS; p < 0.001), S iron (p < 0.02), total iron binding capacity (TIBC; p < 0.001), transferrin (p < 0.016), and soluble transferrin receptor (sTfR; p-value, 0.001)] were significantly associated with C282Y mutation. However, there was no significant difference regarding ferritin values and C282Y mutation in NR patients. CONCLUSION: Iron overload was frequently detected in CHC patients and associated with C282Y mutation, while biochemical markers of iron overload and C282Y HFE mutation were negative prognostic factor.How to cite this article: Mehrez MI, Fattah DSA, Azeem NAA, Saleh MA, Mostafa KM. Hemochromatosis Gene Polymorphism as a Predictor of Sustained Virological Response to Antiviral Treatment in Egyptian Chronic Hepatitis C Patients. Euroasian J Hepato-Gastroenterol 2017;7(2):154-157.

Serious Adverse Events with Sofosbuvir Combined with Interferon and Ribavirin: Real-Life Egyptian Experience.

Viral hepatitis is a serious problem worldwide that was under-recognized till recently. The prevalence of chronic hepatitis C virus (HCV) is estimated to be 180 million people worldwide. Treatment of chronic HCV using combined pegylated interferon and ribavirin (PEG/RIBA) has long been the standard of care with modest response. In our study, we will report the real-life experience of serious adverse events (SAEs) that were reported by the National Committee for Control of Viral Hepatitis (NCCVH, Cairo, Egypt) program while treating chronic HCV using the triple therapy, sofosbuvir combined with pegylated interferon and ribavirin (PEG/RIBA/SOF), which led to premature discontinuation of treatment. This retrospective analysis included a total of 6,989 chronic HCV patients who were treated by the NCCVH. They received the triple antiviral therapy in 26 treatment centers in Egypt using PEG/RIBA/SOF for 12 weeks. Among 6,989 patients who were treated in 26 treatment centers related to NCCVH, 406 cases (5.9%) reported SAEs and prematurely stopped their treatment. Triple therapy PEG/RIBA/SOF was an important intermediate milestone between interferon-based therapy and the interferon-free all-oral direct acting antiviral agents (DAAs). Results of this study were the leading cause of discontinuation of interferon-based therapy and introduction of interferon-free all-oral treatment protocols, incorporating DAAs from different classes as soon as they gain approval.