-- Data Reinforce Effectiveness of Epclusa® for Hepatitis C in Key Underserved Populations --
-- Hepatitis B Data Demonstrate Durable Renal and Bone Safety Benefit of Vemlidy® and Support Further Evaluation of Selgantolimod as Part of Combination Approach to Functional Cure --
-- Full Results From Phase 2 ATLAS Study Support Potential for Combination Approaches for the Treatment of Patients With Advanced Fibrosis Due to NASH --
FOSTER CITY, Calif.--(BUSINESS WIRE)-- Gilead Sciences, Inc. (Nasdaq: GILD) announced the presentation of more than 40 abstracts reflecting the breadth of research from the company’s programs addressing significant challenges in viral hepatitis, nonalcoholic steatohepatitis (NASH) and primary sclerosing cholangitis (PSC) at The Digital International Liver Congress™ 2020 (ILC) from August 27-29.
Viral Hepatitis
Real-world data from several studies presented at ILC demonstrate that Epclusa® (400 mg sofosbuvir/100 mg velpatasvir) is effective in curing hepatitis C (HCV) in a broad range of people and can be utilized in underserved populations, such as those experiencing mental health disorders, incarceration or homelessness. A large real-world dataset of 1,888 adults from 33 clinical cohorts found a 98% sustained virologic response (SVR) rate among the effectiveness population (defined as patients achieving SVR or having virologic failure) with Epclusa for 12 weeks across these key underserved patient populations. Additionally, an analysis of data from eight primary care clinics in Australia found that treatment with Epclusa for 12 weeks resulted in a 98% cure rate in a marginalized, diverse patient population, including those with compensated cirrhosis.
New 96-week clinical data from a Phase 3 study in 488 virologically suppressed adults with chronic hepatitis B virus (HBV) infection demonstrated that once-daily Vemlidy® (tenofovir alafenamide 25 mg, TAF) sustained viral suppression while improving markers of renal and bone health, after switching from once-daily tenofovir disoproxil fumarate 300 mg (TDF). In HBV functional cure research, results from a Phase 2 study of 48 virally suppressed patients with chronic HBV infection showed that treatment with investigational selgantolimod, an oral selective small molecule agonist of toll-like receptor 8 (TLR8), up to 3 mg once-weekly in combination with oral antivirals for 24 weeks, was generally well tolerated and demonstrated dose-dependent pharmacodynamic activity with two out of 39 treated patients (5.1%) achieving negative hepatitis B surface antigen results after 24 weeks of treatment with selgantolimod.
NASH and Liver Disease Research
Full results from the Phase 2, randomized, double-blind, placebo-controlled ATLAS study demonstrate the potential for combination approaches to improve markers of liver health in people with advanced fibrosis due to NASH. While no regimen led to a statistically significant increase in the proportion of patients who achieved the primary efficacy endpoint of a ?1-stage improvement in fibrosis without worsening of NASH based on traditional liver biopsy evaluation, a machine learning approach identified fibrosis regression and significant improvements in noninvasive tests of fibrosis (e.g., Enhanced Liver Fibrosis (ELF) score and liver stiffness) were observed in patients treated with the combination of cilofexor 30 mg and firsocostat 20 mg compared with placebo. This combination resulted in meaningful improvement in secondary endpoints including a ?2-point reduction in the NAFLD Activity Score (NAS), and ?1-grade reductions in steatosis, hepatocellular ballooning and lobular inflammation. Cilofexor and firsocostat demonstrated a favorable safety profile.
Gilead is also presenting data describing the utility of machine learning approaches to evaluate liver histology, identify histologic features associated with disease progression in NASH and PSC, and assess the impact of treatment with TDF in chronic HBV.
“The Phase 2 ATLAS study demonstrated the potential of combination therapies to improve liver histology and markers of disease activity in patients with advanced fibrosis due to NASH,” said Rob Myers, MD, Vice President and Liver Fibrosis Clinical Research Lead, Gilead Sciences. “The data from this and other Gilead clinical trials demonstrate that machine learning approaches enable quantitative and reproducible assessment of liver histology and prognosis, and may facilitate the development of novel therapies and enhanced approaches to care for people with NASH and other liver diseases.”
PSC is a rare and chronic condition that causes inflammation and scarring of the bile ducts, which may lead to liver failure and increased risk of cancer in or outside the liver. Data presented will help advance understanding of the biology and progression of PSC, and may inform future clinical development in this condition, for which a large unmet need for effective therapy exists. Gilead’s Phase 3 PRIMIS clinical trial evaluating the safety, tolerability, and efficacy of cilofexor in non-cirrhotic adults with PSC is currently recruiting.
Select accepted abstracts being presented at The Digital International Liver Conference include:
Hepatitis C Treatment for Underserved Populations
Abstract 427 (poster)
Global Real-World Evidence of Sofosbuvir/Velpatasvir (SOF/VEL) as a Highly Effective Treatment and Elimination Tool in Underserved Patient Populations Experiencing Mental Health Disorders, Incarceration or Homelessness
Abstract 419 (poster)
HCV in the Australian Primary Care Setting: Real-World Effectiveness of 12 Weeks of Sofosbuvir/Velpatasvir for the Treatment of Chronic Hepatitis C
Hepatitis B Treatment Durability and Functional Cure Research
Abstract 091 (oral)
A Phase 3 Study Comparing Switching from Tenofovir Disoproxil Fumarate (TDF) to Tenofovir Alafenamide (TAF) with Continued TDF Treatment in Virologically-suppressed Patients with Chronic Hepatitis B (CHB): Final Week 96 Efficacy and Safety Results
Abstract 071 (oral)
Efficacy and Safety of 24 Weeks Treatment with Oral TLR8 Agonist, Selgantolimod, in Virally-Suppressed Adult Patients with Chronic Hepatitis B: A Phase 2 Study
Combination Treatment for Advanced Fibrosis Due to NASH
Late Breaker Abstract 04 (oral)
Safety And Efficacy of Combination Therapies Including Cilofexor/Firsocostat in Patients With Bridging Fibrosis and Cirrhosis Due to NASH: Results of the Phase 2b ATLAS Trial
Combination Treatment for Advanced Fibrosis Due to NASH
Late Breaker Abstract 04 (oral)
Safety And Efficacy of Combination Therapies Including Cilofexor/Firsocostat in Patients With Bridging Fibrosis and Cirrhosis Due to NASH: Results of the Phase 2b ATLAS Trial
Utility of Machine Learning in Liver Diseases
Abstract 003 (poster)
Machine Learning Models Identify Histologic Features Predictive of Clinical Disease Progression in Patients With Advanced Fibrosis Due to Nonalcoholic Steatohepatitis
Abstract 101 (oral)
Convolutional Neural Networks of H&E-Stained Biopsy Images
Accurately Quantify Histologic Features of Nonalcoholic Steatohepatitis
Abstract 173 (poster)
Machine Learning Models Accurately Interpret Liver Histology and Are Associated with Disease Progression in Patients With Primary Sclerosing Cholangitis
Late Breaker Abstract 31 (poster)
Machine Learning Identifies Histologic Features Associated With Regression of Cirrhosis in Treatment for Chronic Hepatitis B
Primary Sclerosing Cholangitis Biology and Progression
Abstract 170 (poster)
Hepatic Transcriptomic Analysis Identifies a Mast Cell Gene Expression Signature that Correlates With Fibrosis Stage and is Prognostic in Patients With Primary Sclerosing Cholangitis
Abstract 169 (poster)
Removal of Fibrosis-Related Genes Identifies a Hepatic Gene Expression Signature that Identifies Canonical Signaling Pathways and is Correlated With Clinical Outcomes in Patients With Primary Sclerosing Cholangitis
Abstract 168 (poster)
Serum Bile Acid Species Are Associated With Liver Fibrosis and Clinical Disease Progression in Patients With Primary Sclerosing Cholangitis
Please see below for the U.S. Indications and Important Safety Information, including BOXED WARNINGS, for Epclusa and Vemlidy.
The safety and efficacy of selgantolimod, firsocostat and cilofexor have not been established. Selgantolimod, firsocostat and cilofexor are investigational compounds and are not approved by the U.S. FDA or any other regulatory authority.
U.S. Important Safety Information and Indication for Epclusa
BOXED WARNING: RISK OF HEPATITIS B VIRUS REACTIVATION IN HCV/HBV COINFECTED PATIENTS
Test all patients for evidence of current or prior hepatitis B virus (HBV) infection before initiating treatment with EPCLUSA. HBV reactivation has been reported in HCV/HBV coinfected patients who were undergoing or had completed treatment with HCV direct acting antivirals (DAAs) and were not receiving HBV antiviral therapy. Some cases have resulted in fulminant hepatitis, hepatic failure, and death. Cases have been reported in patients who are HBsAg positive, in patients with serologic evidence of resolved HBV, and also in patients receiving certain immunosuppressant or chemotherapeutic agents; the risk of HBV reactivation associated with treatment with HCV DAAs may be increased in patients taking these other agents. Monitor HCV/HBV coinfected patients for hepatitis flare or HBV reactivation during HCV treatment and post-treatment follow-up. Initiate appropriate patient management for HBV infection as clinically indicated.
Contraindications
If EPCLUSA is used in combination with ribavirin (RBV), all contraindications, warnings and precautions, in particular pregnancy avoidance, and adverse reactions to RBV also apply. Refer to RBV prescribing information.
Warnings and Precautions
Serious Symptomatic Bradycardia When Coadministered with Amiodarone: Amiodarone is not recommended for use with EPCLUSA due to the risk of symptomatic bradycardia, particularly in patients also taking beta blockers or with underlying cardiac comorbidities and/or with advanced liver disease. A fatal cardiac arrest was reported in a patient taking amiodarone who was coadministered a sofosbuvir containing regimen. In patients without alternative, viable treatment options, cardiac monitoring is recommended. Patients should seek immediate medical evaluation if they develop signs or symptoms of bradycardia.
Risk of Reduced Therapeutic Effect Due to Use with P-gp Inducers and/or Moderate to Strong Inducers of CYP2B6, CYP2C8 or CYP3A4: Rifampin, St. John’s wort and carbamazepine are not recommended for use with EPCLUSA as they may significantly decrease sofosbuvir and/or velpatasvir plasma concentrations
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