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SAN DIEGO, Oct. 22, 2024 (GLOBE NEWSWIRE) -- Gyre Therapeutics, Inc. (“Gyre”) (Nasdaq: GYRE), a self-sustainable, commercial-stage biotechnology company with clinical development programs focusing on a variety of chronic organ diseases, today announced that the last patient in Gyre Pharmaceuticals’ pivotal Phase 3 trial in the People’s Republic of China (“PRC”) evaluating F351 (hydronidone) for Chronic Hepatitis B (“CHB”)-associated liver fibrosis has completed the 52-week study. Gyre Pharmaceuticals expects to report topline data from this trial by the first quarter of 2025. “The final patient completing our pivotal F351 Phase 3 trial marks an important milestone for Gyre and our development pipeline. We are grateful to the patients, researchers, trial investigators, and various teams who supported this trial and look forward to sharing data in the first quarter of 2025,” said Han Ying, Ph.D., CEO of Gyre Therapeutics. “Furthermore, we are excited to potentially use these results to spur initiation of our Phase 2 clinical trial in the United States evaluating F351 for Metabolic Dysfunction-Associated Steatohepatitis (“MASH”)-associated fibrosis in 2025.” The randomized, double-blind, placebo-controlled, multicenter Phase 3 trial (NCT05115942) enrolled 248 patients across 39 clinical research hospitals in the PRC. Patients were randomized 1:1 to receive either F351 or placebo in addition to entecavir antiviral basic therapy for CHB. The primary endpoint is a decrease in liver fibrosis (as measured by the Ishak Scoring System) by at least one stage after 52 weeks of treatment relative to baseline. China’s National Medical Products Administration (“NMPA”) designated F351 as a “Breakthrough Therapy” in 2021. About Hydronidone (F351) F351 is a structural analogue of the approved anti-fibrotic drug Pirfenidone (approved in the PRC for the treatment of idiopathic pulmonary fibrosis) and has been shown to inhibit in vitro both p38γ kinase activity and TGF-β1-induced excessive collagen synthesis in hepatic stellate cells (“HSCs”), which are recognized as critical event in the development and progression of fibrosis in the liver. This is further supported by its anti-proliferative effects on the HSCs in the liver. In vitro anti-fibrotic effects of F351 were also confirmed in several established in vivo models of liver fibrosis, such as CCI4-induced liver fibrosis mouse model, DMN-induced liver fibrosis rat model, and HSA-induced liver rat model, as well as mouse model of MASH fibrosis (CCI4+Western High Fat Diet). About Gyre Therapeutics Gyre Therapeutics is a biopharmaceutical company headquartered in San Diego, CA, with a primary focus on the development and commercialization of F351 (Hydronidone) for the treatment of MASH-associated fibrosis in the U.S. Gyre’s development strategy for F351 in MASH is based on the Company’s experience in MASH rodent model mechanistic studies and CHB-induced liver fibrosis clinical studies. Gyre is also advancing a diverse pipeline in the PRC through its indirect controlling interest in Gyre Pharmaceuticals, including ETUARY therapeutic expansions, F573, F528, and F230. About Gyre Pharmaceuticals Gyre Pharmaceuticals is a commercial-stage biopharmaceutical company committed to the research, development, manufacturing and commercialization of innovative drugs for organ fibrosis. Its flagship product, ETUARY (Pirfenidone capsule), was the first approved treatment for IPF in the PRC in 2011 and has maintained a prominent market share (2023 net sales of $112.1 million). In addition, Gyre Pharmaceuticals is evaluating F351 in a Phase 3 clinical trial in CHB-associated liver fibrosis in the PRC, which is expected to readout topline data by the first quarter of 2025. F351 received Breakthrough Therapy designation by the National Medical Products Administration’s Center for Drug Evaluation in March 2021. Gyre Pharmaceuticals is also developing treatments for COPD, PAH and ALF/ACLF. In October 2023, Gyre Therapeutics acquired an indirect majority interest in Gyre Pharmaceuticals (also known as Beijing Continent Pharmaceuticals Co., Ltd.). Forward-Looking Statements This press release contains “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, which statements are subject to substantial risks and uncertainties and are based on estimates and assumptions. All statements, other than statements of historical facts included in this press release, are forward-looking statements, including statements concerning: the expectations regarding Gyre’s research and development efforts, timing of expected clinical readouts, including timing of topline data from Gyre Pharmaceuticals’ Phase 3 clinical trial evaluating F351 for the treatment of CHB-associated liver fibrosis in the PRC, and the initiation of Gyre’s Phase 2 trial in the U.S. for F351. In some cases, you can identify forward-looking statements by terms such as “may,” “might,” “will,” “objective,” “intend,” “should,” “could,” “can,” “would,” “expect,” “believe,” “design,” “estimate,” “predict,” “potential,” “plan” or the negative of these terms, and similar expressions intended to identify forward-looking statements. These statements reflect our plans, estimates, and expectations, as of the date of this press release. These statements involve known and unknown risks, uncertainties and other factors that could cause our actual results to differ materially from the forward-looking statements expressed or implied in this press release. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation: Gyre’s ability to execute on its clinical development strategies; positive results from a clinical trial may not necessarily be predictive of the results of future or ongoing clinical trials; the timing or likelihood of regulatory filings and approvals; competition from competing products; the impact of general economic, health, industrial or political conditions in the United States or internationally; the sufficiency of Gyre’s capital resources and its ability to raise additional capital. Additional risks and factors are identified under “Risk Factors” in Gyre’s Annual Report on Form 10-K for the year ended December 31, 2023 filed on March 27, 2024 and in other filings with the Securities and Exchange Commission. Gyre expressly disclaims any obligation to update any forward-looking statements whether as a result of new information, future events or otherwise, except as required by law. For Investors:Stephen Jasperstephen@gilmartinir.com

Company to conduct a Phase 1 Drug-Drug Interaction StudyPhase 2 filing on track for Q1 2025 SOUTH SAN FRANCISCO, Calif., Oct. 22, 2024 (GLOBE NEWSWIRE) -- Aligos Therapeutics, Inc. (Nasdaq: ALGS, “Aligos”), a clinical stage biopharmaceutical company focused on improving patient outcomes through best-in-class therapies for liver and viral diseases, today announced that the U.S. Food and Drug Administration (FDA) has cleared the Company’s Investigational New Drug (IND) for a Phase 1 Drug-Drug Interaction (DDI) study of ALG-000184, a capsid assembly modulator (CAM-E) for the treatment of Chronic Hepatitis B (CHB). “The acceptance of our third U.S. IND is an important milestone for Aligos,” said Lawrence Blatt, Ph.D., MBA, Chairman, President, and Chief Executive Officer of Aligos Therapeutics. “This IND clearance allows us to begin the next stages of our clinical development for ALG-000184, including the advancement of the compound into Phase 2 clinical trials. ALG-000184 is the first novel, oral drug candidate for the treatment of HBV infection that can inhibit multiple components of the viral lifecycle, leading to more complete suppression of the virus compared to other therapeutic modalities.” The DDI study is designed to evaluate the effect of a cytochrome P450 inhibitor and inducer on ALG-000184 pharmacokinetics. In addition, Phase 2 enabling activities are ongoing, with a planned filing in Q1 2025 for the Phase 2 study. This clinical trial will be a randomized, double-blind, active controlled study of ALG-000184 vs. standard of care in HBeAg-positive and HBeAg-negative CHB subjects. “ALG-000184 has demonstrated impressive data to date with broad antiviral activity,” stated Hardean Achneck, MD, Chief Medical Officer at Aligos Therapeutics. “ALG-000184 has the potential to improve outcomes compared to the current standard of care. We look forward to finalizing the Phase 2 study design in conjunction with KOLs and the FDA and anticipate enrolling patients next year.” Data from ≤72 weeks following an oral daily dose of 300 mg ALG-000184 has demonstrated the ability to disrupt the entire HBV lifecycle through best-in-class reductions of the relevant viral markers: HBV DNA, RNA, HBsAg, HBeAg, and HBcrAg. Dosing through 96 weeks is ongoing, with interim data readouts expected at upcoming scientific conferences. ALG-000184 has a clear regulatory path endorsed by the FDA and CDE (China) for chronic suppressive therapy with a potential superiority label compared to standard of care. About ALG-000184 ALG-000184 was derived from initial IP licensed from the laboratory of Dr. Raymond Schinazi at Emory University, which was further optimized by Aligos. ALG-000184 is a potent potential best/first-in-class oral small molecule capsid assembly modulator (CAM-E) being developed for chronic hepatitis B (CHB). Phase 1a studies have demonstrated after single and multiple daily doses that ALG-000184 was well-tolerated, with no safety signals observed, and demonstrated linear PK and excellent antiviral activity. In longer term Phase 1b studies of ALG-000184 300mg QD x ≤96 weeks ± Entecavir (ETV) and ALG-000184 monotherapy have demonstrated best-in-class sustained reductions in HBV DNA, RNA, HBsAg, HBeAg, and HBcrAg. Dosing is ongoing through 2025 with interim data readouts expected at upcoming scientific conferences. Phase 2 enabling activities are ongoing, with a planned Phase 2 IND filing in Q1 2025. ALG-000184 has a clear regulatory path endorsed by the FDA and CDE (China) for chronic suppressive therapy with a potential superiority label compared to standard of care. About Chronic Hepatitis B There were more than 290 million chronic carriers of Chronic Hepatitis B (CHB) worldwide as of July 2020 and approximately 30 million individuals become newly infected every year despite the availability of a prophylactic vaccine. In 2015, there were more than 90 million cases of CHB in China alone, while the European Union, United States and Japan accounted for nearly 8 million cases. Complications from CHB include cirrhosis, end-stage liver disease, and hepatocellular carcinoma, which collectively resulted in approximately 900,000 deaths in 2015, according to the World Health Organization. CHB is the primary cause of liver cancer worldwide, and the mortality associated with HBV-related liver cancer continues to increase. About Aligos Aligos Therapeutics, Inc. (NASDAQ: ALGS) is a clinical stage biopharmaceutical company founded with the mission to improve patient outcomes by developing best-in-class therapies for the treatment of liver and viral diseases. Aligos applies its science driven approach and deep R&D expertise to advance its purpose-built pipeline of therapeutics for metabolic dysfunction-associated steatohepatitis (MASH) and viruses with high unmet medical need such as hepatitis B and coronaviruses. For more information, please visit www.aligos.com or follow us on LinkedIn or X. Forward-Looking Statements This press release contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Any statements in this press release that are not historical facts may be considered “forward-looking statements,” including without limitation, statements regarding Aligos’ financial results and performance as well as research and development activities, including regulatory status and the timing of announcements and updates relating to our regulatory filings and clinical trials. Such forward looking statements are subject to substantial risks and uncertainties that could cause our development programs, future results, performance, or achievements to differ materially from those anticipated in the forward-looking statements. Such risks and uncertainties include, without limitation, risks and uncertainties inherent in the drug development process, including Aligos’ clinical-stage of development, the process of designing and conducting clinical trials, the regulatory approval processes, and other matters that could affect the sufficiency of Aligos’ capital resources to fund operations. For a further description of the risks and uncertainties that could cause actual results to differ from those anticipated in these forward-looking statements, as well as risks relating to the business of Aligos in general, see Aligos’ Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 6, 2024 and its future periodic reports to be filed or submitted with the Securities and Exchange Commission. Except as required by law, Aligos undertakes no obligation to update any forward-looking statements to reflect new information, events or circumstances, or to reflect the occurrence of unanticipated events. Investor ContactAligos Therapeutics, Inc.Jordyn TaraziVice President, Investor Relations & Corporate Communications+1 (650) 910-0427jtarazi@aligos.com Media ContactInizio EvokeJake RobisonVice PresidentJake.Robison@inizioevoke.com

– Phase 2 SOLSTICE Safety and Efficacy Data in Hepatitis Delta Trial at Week 24 to Be Presented – – Oral and Five Poster Presentations Highlight Important Progress in Hepatitis Delta and Hepatitis B Clinical Programs, and Deliver Key Insights on the Burden of Disease Among Patient Segments in Hepatitis Delta – SAN FRANCISCO--(BUSINESS WIRE)--Vir Biotechnology, Inc. (NASDAQ:VIR) today announced it will present new data from the Phase 2 SOLSTICE clinical trial evaluating the efficacy and safety pro tobevibart, an investigational monoclonal antibody (mAb), and elebsiran, an investigational small interfering ribonucleic acid (siRNA) for the potential treatment of chronic hepatitis delta. These data will be presented in an oral presentation at the upcoming American Association for the Study of Liver Diseases (AASLD) The Liver Meeting ® , in San Diego, CA, November 15-19, 2024. Vir will also present five poster presentations that further characterize these investigational therapies as well as recent efforts to improve the assessment and evaluation of hepatitis delta infection, and insights into the economic burden of hepatitis delta for patients and society. Vir will also share advances from across the chronic hepatitis B development program. “There is an urgent need for effective therapies for people living with hepatitis delta who can face rapid progression to liver cirrhosis and liver cancer. We are excited by the latest data from our hepatitis delta development program, and we look forward to sharing our latest findings at AASLD as we work to help patients living with this debilitating condition,” said Mark Eisner, M.D., M.P.H., Executive Vice President and Chief Medical Officer, Vir Biotechnology. “Further, patients living with chronic hepatitis B face lifelong treatment and an increased risk of cirrhosis and liver cancer, so developing a functional cure could transform their lives. We are pleased to share data further characterizing our investigational therapies as we continue on our mission to advance a functional cure.” Vir will be presenting the following abstracts: Efficacy and safety of tobevibart (VIR-3434) alone or in combination with elebsiran (VIR-2218) in participants with chronic hepatitis delta virus infection: Week 24 primary endpoint analysis from the Phase 2 SOLSTICE trial Session: Hepatitis D: Natural History and Treatment Date: Monday, November 18 Time: 6:15 – 6.30 p.m. PT Presenter: Tarik Asselah, M.D., Ph.D., Professor of Hepatology at the Hôpital Beaujon, APHP, Clichy, France, and at the University of Paris, and Head of Viral Hepatitis at INSERM UMR1149, France Pharmacokinetics and safety of a single dose of elebsiran (VIR-2218, siRNA) subcutaneously administered in adult participants with moderate renal impairment (Poster #1340) Session: Hepatitis B Date: November 15 Time: 1:00 – 2:00 p.m. PT Presenter: Li Wang, Associate Director, Clinical Pharmacology, Vir Biotechnology, Inc. Dose-Dependent Effects of Neutralizing Anti-HBs Monoclonal Antibody VIR-3434 on Hepatitis B Surface Antigen Composition (Poster #1409) Session: Hepatitis B Date: November 15 Time: 1:00 – 2:00 p.m. PT Presenter: Florian van Bömmel, M.D., Professor of Medicine, Division of Hepatology, Department of Medicine II, Leipzig University Medical Center. Safety Pro tobevibart (VIR-3434) and elebsiran (VIR-2218) for the treatment of chronic hepatitis B and delta (CHB and CHD) (Poster #1375) Session: Hepatitis B Date: November 15 Time: 1:00 – 2:00 p.m. PT Presenter: Alina Jucov, M.D., Ph.D., Arensia Exploratory Medicine GmbH, Düsseldorf, Germany, and Nicolae Testemitanu, State University of Medicine and Pharmacy, Chişinău, Moldova. Review of evidence to support the use of surrogate endpoints and fibroscan in hepatitis D infection (Poster #1174) Session: Hepatitis – Other Infections Date: November 15 Time: 1:00 – 2:00 p.m. PT Presenter: Prajakta Bhounsule, Director, Health Economy and Marketing, Vir Biotechnology, Inc. Assessing economic burden among unique patient segments in an HDV-infected population (Poster #3294) Session: Health Services and Public Health Research Date: November 17 Time: 1:00 – 2:00 p.m. PT Presenter: Prajakta Bhounsule, Director, Health Economy and Marketing, Vir Biotechnology, Inc. About Tobevibart (VIR-3434) Tobevibart is an investigational broadly neutralizing monoclonal antibody targeting the hepatitis B surface antigen. It is designed to inhibit the entry of hepatitis B and hepatitis delta viruses into hepatocytes, and to reduce the level of circulating viral and subviral particles in the blood. Tobevibart was identified using Vir’s proprietary antibody discovery platform and has been engineered to have an extended half-life and optimized binding to immune cells. Tobevibart is administered subcutaneously, and it is currently in clinical development for treatment of patients with chronic hepatitis B and patients with chronic hepatitis delta. About Elebsiran (VIR-2218) Elebsiran is an investigational hepatitis B virus-targeting small interfering ribonucleic acid (siRNA) designed to degrade hepatitis B virus RNA transcripts and limit the production of hepatitis B surface antigen. Current data indicates that it has the potential to have direct antiviral activity against hepatitis B virus and hepatitis delta virus. Elebsiran is administered subcutaneously, and it is currently in clinical development for treatment of patients with chronic hepatitis B and patients with chronic hepatitis delta. It is the first asset in Vir’s collaboration with Alnylam Pharmaceuticals, Inc. to enter clinical studies. About Chronic Hepatitis Delta Chronic hepatitis delta (CHD) is a long-lasting, inflammatory liver disease caused by the hepatitis D virus (HDV), which requires the presence of hepatitis B virus (HBV) for its replication 1 . CHD affects nearly 5% of people who have a chronic infection with HBV, and it is considered by the World Health Organization to be the most severe form of chronic viral hepatitis 2 . Co-infection with HDV accelerates progression towards liver cancer and liver-related death by almost a decade in comparison to HBV mono-infected persons, independently of their age 3 . There is no cure, and treatment options are limited. References: 1 NIH National Institute of Diabetes and Digestive and Kidney Diseases Hepatitis D - NIDDK (nih.gov) , accessed September 2024. 2 WHO Hepatitis Delta Factsheet - Hepatitis D (who.int) , accessed September 2024 3 CDC About Chronic Hepatitis B Chronic hepatitis B (CHB) a is a long-lasting, inflammatory liver disease caused by the hepatitis B virus (HBV) 1 . The World Health Organization estimates that 254 million people were living with CHB infection in 2022, with 1.2 million new infections each year, and an estimated 1.1 million yearly deaths associated to the disease 2 . Complications from CHB may include liver cirrhosis, liver failure and liver cancer 3 . Although CHB can be treated, there’s no cure available today 1 . References: 1 CDC Hepatitis B Basics | Hepatitis B | CDC 2 WHO Hepatitis B Factsheet - Hepatitis B (who.int) , accessed September 2024 3 NIH National Institute of Diabetes and Digestive and Kidney Diseases Hepatitis B - NIDDK (nih.gov) , accessed September 2024. About Vir Biotechnology, Inc. Vir Biotechnology, Inc. is a clinical-stage biopharmaceutical company focused on powering the immune system to transform lives by discovering and developing medicines for serious infectious diseases and cancer. Vir’s clinical-stage portfolio includes infectious disease programs for chronic hepatitis delta and chronic hepatitis B infections, in addition to multiple oncology programs. Vir also has a preclinical portfolio of programs across a range of other infectious diseases and oncologic malignancies. Vir routinely posts information that may be important to investors on its website. Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “may,” “will,” “plan,” “potential,” “aim,” “expect,” “anticipate,” “promising” and similar expressions (as well as other words or expressions referencing future events, conditions or circumstances) are intended to identify forward-looking statements. These forward-looking statements are based on Vir’s expectations and assumptions as of the date of this press release. Forward-looking statements contained in this press release include, but are not limited to, statements regarding Vir’s strategy and plans, the potential clinical effects of tobevibart and elebsiran, the potential benefits, safety and efficacy of tobevibart and elebsiran, the timing, nature and significance of data from Vir’s multiple ongoing trials evaluating tobevibart and elebsiran, Vir’s plans and expectations for its CHD and CHB programs, and risks and uncertainties associated with drug development and commercialization. Many factors may cause differences between current expectations and actual results, including unexpected safety or efficacy data or results observed during clinical trials or in data readouts; the occurrence of adverse safety events; risks of unexpected costs, delays or other unexpected hurdles; difficulties in collaborating with other companies; successful development and/or commercialization of alternative product candidates by Vir’s competitors; changes in expected or existing competition; delays in or disruptions to Vir’s business or clinical trials due to geopolitical changes or other external factors; and unexpected litigation or other disputes. Drug development and commercialization involve a high degree of risk, and only a small number of research and development programs result in commercialization of a product. Results in early-stage clinical trials may not be indicative of full results or results from later stage or larger scale clinical trials and do not ensure regulatory approval. You should not place undue reliance on these statements, or the scientific data presented. Other factors that may cause actual results to differ from those expressed or implied in the forward-looking statements in this press release are discussed in Vir’s filings with the U.S. Securities and Exchange Commission, including the section titled “Risk Factors” contained therein. Except as required by law, Vir assumes no obligation to update any forward-looking statements contained herein to reflect any change in expectations, even as new information becomes available. Contacts Media Arran Attridge Senior Vice President, Corporate Communications aattridge@vir.bio Investors Richard Lepke Senior Director, Investor Relations rlepke@vir.bio