Peginterferon alfa-2a(Rhein-Minapharm)

– Prior data from the Phase 2 SOLSTICE trial in chronic hepatitis delta participants demonstrated that after only 12 weeks of combination therapy, 100% (6/6) of participants had HDV RNA less than the lower limit of quantification – – Phase 2 SOLSTICE trial on track to complete enrollment ahead of schedule with initial data expected in the second quarter; greater than 90% of participants dosed – – Prior Phase 2 MARCH Part B chronic hepatitis B data demonstrated that tobevibart may play an important role in achieving a functional cure; 48-week end of treatment data readout on track for the fourth quarter – – $1.63 billion in cash, cash equivalents and investments as of December 31, 2023 – – Conference call scheduled for February 22, 2024 at 1:30 p.m. PT / 4:30 p.m. ET – SAN FRANCISCO--(BUSINESS WIRE)-- VIR BIOTECHNOLOGY, Inc. (Nasdaq: VIR) today provided a corporate update and reported financial results for the fourth quarter and full year ended December 31, 2023. “Vir is poised to have a transformational year, with catalysts expected in the second and fourth quarters, which build off last year’s clinical trial progress in our chronic hepatitis delta and B programs. We believe these data readouts, notably the SOLSTICE delta update in the second quarter, hold tremendous promise for patients as we work towards solutions for these deadly diseases,” said Marianne De Backer, M.Sc., Ph.D., MBA, Vir’s Chief Executive Officer. “Our financial strength allows us to fund multiple clinical programs through major inflection points while enabling the flexibility to invest in external innovation opportunities.” Pipeline Programs Chronic Hepatitis Delta (CHD) The Company presented initial SOLSTICE data from a small subset of participants in a late-breaker presentation at the American Association for the Study of Liver Diseases (AASLD) The Liver Meeting in November 2023. After 12 weeks of combination treatment with tobevibart and elebsiran, 5 out of 6 participants achieved undetectable HDV RNA and 6 out of 6 were below the lower limit of quantification. The SOLSTICE trial is ongoing with enrollment currently ahead of schedule for completion in the first quarter of 2024 due to the high level of physician and patient interest. This portion of the SOLSTICE trial is investigating the combination of tobevibart and elebsiran given every 4 weeks in one cohort, and tobevibart monotherapy given every 2 weeks in another cohort. Of the 30 participants anticipated to be enrolled in each cohort, approximately 44% have compensated cirrhosis. The Company expects to report data on a subset of participants in the second quarter: 12-week treatment data for 15 participants per regimen as well as 24-week data for 10 participants per regimen. Complete 24-week treatment data for 30 participants per regimen is expected in the fourth quarter of 2024. Chronic Hepatitis B (CHB) The Company presented new MARCH Part B data at AASLD The Liver Meeting in November 2023. The data demonstrated an approximately three-fold higher response rate when adding tobevibart to a regimen of elebsiran with or without peginterferon after 24 weeks of treatment (15.0% for tobevibart + elebsiran + peginterferon alpha and 14.3% for tobevibart + elebsiran). The MARCH Part B trial is ongoing with 48-week end of treatment data expected in the fourth quarter of 2024. The Phase 2 PREVAIL platform trial and its THRIVE/STRIVE sub-protocols are ongoing. The platform is evaluating combinations of tobevibart, elebsiran and/or peginterferon alpha in two CHB patient populations with the potential to evaluate other populations in the future. Initial data from this platform trial is expected in the first half of 2025. Human Immunodeficiency Virus (HIV) The Phase 1 trial of VIR-1388, an investigational novel T cell vaccine for the prevention of HIV, remains ongoing with initial immunogenicity data expected in the second half of 2024. The trial is supported by the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health, and the Bill & Melinda Gates Foundation, and is being conducted by the HIV Vaccine Trials Network. In December, Nature Medicine recognized the Phase 1 trial of VIR-1388 as one of the “11 clinical trials that will shape medicine in 2024”. COVID-19 Later this year, the Company expects to health authority application to support a Phase 1 trial evaluating VIR-7229, a potential broadly neutralizing next-generation COVID antibody that has been AI-engineered to have increased potency, breadth and resistance to viral escape. The development of VIR-7229 has been supported in whole or in part with federal funds from the Department of Health and Human Services (HHS); Administration for Strategic Preparedness and Response (ASPR); Biomedical Advanced Research and Development Authority (BARDA), under Other Transaction Number: 75A50122C00081. Influenza The full analysis of data from the Phase 2 PENINSULA trial is expected in the second quarter in a scientific publication. On February 21, 2024, the Company and GSK terminated their collaboration to research, develop and commercialize the Company’s monoclonal antibodies for the prevention, treatment, or prophylaxis of the influenza virus under the Definitive Collaboration Agreement established in May 2021 to reflect that Vir retains sole rights to continue advancing its investigational therapies for influenza independently or with other partners. The Company is actively pursuing external partnership opportunities for its next-generation influenza A and B antibodies and Antibody Drug Conjugates (ADCs). Preclinical Pipeline Candidates Vir is continuing to advance next-generation antibodies using its proprietary platform, which leverages dAIsYTM (data AI structure and antibody), an AI engine, allowing the Company to bring high-quality drug candidates to the clinic more efficiently. The Company expects the filing of multiple new INDs in the next 12-24 months, including: VIR-2981, an investigational neuraminidase-targeting mAb against both influenza A and B viruses. VIR-8190, an investigational mAb against respiratory syncytial virus (RSV) and human metapneumovirus. VIR-1949, an investigational therapeutic T cell vaccine based on Vir’s human cytomegalovirus (HCMV) vector platform that is designed to treat precancerous lesions caused by the human papillomavirus. Corporate Update In December of 2023, the Company announced strategic imperatives to focus its capital allocation on programs with the highest potential for patient impact and value creation, which include: Closing R&D facilities in St. Louis, Missouri and Portland, Oregon in 2024. Research activities will continue at the Company’s sites in San Francisco, California and Bellinzona, Switzerland. Eliminating approximately 12%, or 75 positions, including reductions from the Company’s discontinuation of its small molecule group which was initiated in the third quarter of 2023. The reductions will be substantially completed by the end of the first quarter of 2024. Through these actions, the Company expects to reduce its cost structure by at least $40 million annually. On February 20, 2024, the Company announced that Executive Vice President and Chief Medical Officer, Phil Pang, M.D., Ph.D., has decided to step down to spend more time with his family. Dr. Pang’s last day will be March 31, 2024. The Company has initiated a search for a successor. Fourth Quarter and Full Year 2023 Financial Results Cash, Cash Equivalents and Investments: As of December 31, 2023, the Company had approximately $1.63 billion in cash, cash equivalents and investments. Cash, cash equivalents and investments declined by approximately $108 million during the fourth quarter of 2023. Revenues: Total revenues for the quarter ended December 31, 2023 were $16.8 million compared to $49.4 million for the same period in 2022. Total revenues for the full year of 2023 were $86.2 million compared to $1.6 billion in 2022. Revenues were comprised of the following components: Three Months Ended December 31, Year Ended December 31, 2023 2022 % Change 2023 2022 % Change (in millions) (in millions) Collaboration revenue $ 8.9 $ 21.6 (58.8 )% $ 37.3 $ 1,505.5 (97.5 )% Contract revenue 0.7 0.2 >100.0% 2.2 52.7 (95.8 )% License revenue from a related party — — — % — 22.3 (100.0 )% Grant revenue 7.2 27.6 (73.9 )% 46.7 35.3 32.3 % Total revenues $ 16.8 $ 49.4 (66.0 )% $ 86.2 $ 1,615.8 (94.7 )% Note: Numbers may not add due to rounding. Collaboration revenue: The decrease in collaboration revenue for the fourth quarter and the full year of 2023 compared to the same periods in 2022 was driven by lower profit share from sales of sotrovimab under the Company’s 2020 GSK agreement. Contract revenue: Contract revenue for the fourth quarter of 2023 and 2022 was nominal. The decrease in contract revenue for the full year of 2023 compared to 2022 was primarily driven by the recognition of deferred revenue related to GSK’s selection of RSV in the third quarter of 2022 under the Company’s 2021 GSK agreement. License revenue from a related party: The decrease in license revenue for the full year of 2023 compared to 2022 was driven by certain revenues recognized under the collaboration with Brii Biosciences in the third quarter of 2022. Grant revenue: The decrease in grant revenue for the fourth quarter of 2023 compared to the same period in 2022 and the increase in grant revenue for the full year of 2023 compared to 2022 were primarily driven by the timing of revenue recognized under the Company’s grant with BARDA supporting the Company’s Phase 2 PENINSULA trial of VIR-2482. Cost of Revenue: Cost of revenue for the fourth quarter of 2023 was nominal compared to $6.0 million for the same period in 2022. Cost of revenue for the full year of 2023 was $2.8 million compared to $146.3 million in 2022. The decreases were due to lower third-party royalties owed on the sales of sotrovimab. Research and Development Expenses (R&D): R&D expenses for the fourth quarter of 2023 were $111.9 million, which included severance charges of $2.6 million and $16.5 million of non-cash stock-based compensation expense, compared to $155.2 million for the same period in 2022, which included $13.4 million of non-cash stock-based compensation expense. The decrease was primarily driven by the wind down of clinical studies involving VIR-2482 in the fourth quarter of 2023. R&D expenses for the full year of 2023 were $589.7 million, which included $62.7 million of non-cash stock-based compensation expense, compared to $474.6 million in 2022, which included $53.2 million of non-cash stock-based compensation expense. The increase was primarily driven by the Phase 2 PENINSULA trial of VIR-2482 and related manufacturing costs and, to a lesser extent, the advancement of our CHB and CHD clinical programs. Selling, General and Administrative Expenses (SG&A): SG&A expenses for the fourth quarter of 2023 were $43.1 million, which included $1.9 million of severance charges and $11.8 million of non-cash stock-based compensation expense, compared to $38.7 million for the same period in 2022, which included $11.5 million of non-cash stock-based compensation expense. SG&A expenses for the full year of 2023 were $178.0 million, which included $48.6 million of non-cash stock-based compensation expense, compared to $161.8 million in 2022, which included $48.9 million of non-cash stock-based compensation expense. The increase for both the fourth quarter and full year were primarily driven by higher personnel-related costs. Other Income (Loss): Other income for the fourth quarter of 2023 was $18.3 million compared to other loss of $(1.1) million for the same period in 2022. The increase was primarily due to higher foreign exchange loss incurred in the fourth quarter of 2022, partially offset by higher unrealized loss of equity investments in the same period of 2023. Other income for the full year of 2023 was $56.1 million compared to other loss of $(78.8) million in 2022. The increase was primarily due to higher unrealized loss of equity investments incurred in 2022 and higher interest income earned in 2023. Benefit from (Provision for) Income Taxes: Benefit from income taxes for the fourth quarter of 2023 was $4.8 million compared to $50.0 million for the same period in 2022. Benefit from income taxes for the year of 2023 was $13.1 million compared to a provision for income taxes of $(238.4) million in 2022. The benefit from income taxes in the fourth quarter and the year of 2023 was primarily due to a pre-tax loss and our ability to carry back the R&D credit to 2022. The benefit from income taxes in the fourth quarter of 2022 was primarily due to the Company’s pre-tax loss. The swing from a provision for income taxes in 2022 to a benefit from income taxes in 2023 was due to the higher collaboration revenue from sotrovimab sales that resulted in pre-tax income in 2022. Net (Loss) Income: Net loss attributable to Vir for the fourth quarter of 2023 was $(116.0) million, or $(0.86) per share, basic and diluted, compared to a net loss of $(101.6) million, or $(0.76) per share, basic and diluted, for the same period in 2022. Net loss attributable to Vir for the year of 2023 was $(615.1) million, or $(4.59) per share, basic and diluted, compared to a net income of $515.8 million, or $3.89 per share, basic and $3.83 per share, diluted, in 2022. 2024 Financial Guidance Vir is providing full year 2024 guidance below (in millions): GAAP combined R&D and SG&A expense range: $ 650 to $ 680 The following expenses are included in the GAAP combined R&D and SG&A expense range: Stock-based compensation expense $ 115 to $ 105 Restructuring charges* $ 35 to $ 25 * Restructuring charges are primarily non-cash expenditures, related to the closing of two R&D sites previously announced on December 13, 2023. Approximately three to four percent of the GAAP combined R&D and SG&A expense will be funded by grants. These grants are recognized as revenue. The GAAP combined R&D and SG&A expense guidance does not include the effect of GAAP adjustments caused by events that may occur subsequent to the publication of this guidance, including, but not limited to, business development activities, litigation, in-process R&D impairments, and changes in the fair value of contingent considerations. Conference Call Vir will host a conference call to discuss the fourth quarter and full year results at 1:30 p.m. PT / 4:30 p.m. ET today. A live webcast will be available on and will be archived on for 30 days. About Tobevibart Tobevibart is an investigational subcutaneously administered antibody designed to block entry of hepatitis B and hepatitis delta viruses into hepatocytes and to reduce the level of virions and subviral particles in the blood. Tobevibart, which incorporates Xencor’s Xtend™ and other Fc technologies, has been engineered to potentially function as a T cell vaccine against hepatitis B virus and hepatitis delta virus, as well as to have an extended half-life. Tobevibart was identified using Vir’s proprietary mAb discovery platform. About Elebsiran Elebsiran is an investigational subcutaneously administered hepatitis B virus-targeting small interfering ribonucleic acid (siRNA) that Vir believes has the potential to stimulate an effective immune response and have direct antiviral activity against hepatitis B virus and hepatitis delta virus. It is the first siRNA in the clinic to include Enhanced Stabilization Chemistry Plus (ESC+) technology to enhance stability and minimize off-target activity, which potentially could result in an increased therapeutic index. Elebsiran is the first asset in the Company’s collaboration with Alnylam Pharmaceuticals, Inc. to enter clinical trials. About VIR-2482 VIR-2482 is an investigational hemagglutinin targeting, intramuscularly administered influenza A-neutralizing monoclonal antibody. In vitro, it has been shown to cover all major strains of influenza A that have arisen since the 1918 flu pandemic. VIR-2482 is designed as a prophylactic for influenza A. VIR-2482 incorporates Xencor’s Xtend™ and was identified using Vir’s proprietary mAb discovery platform. The PENINSULA trial has been supported in whole or in part with federal funds from the Department of Health and Human Services (HHS); Administration for Strategic Preparedness and Response (ASPR); Biomedical Advanced Research and Development Authority (BARDA), under Other Transaction Number: 75A50122C00081. About VIR-2981 VIR-2981 is an investigational neuraminidase-targeting monoclonal antibody against influenza viruses. It targets a region of the neuraminidase protein that is highly conserved across influenza A and B strains and is designed to inhibit the influenza neuraminidase, a key viral protein that facilitates release of new viruses in infected individuals. Preclinical data demonstrate the antibody’s breadth and potency against all major strains of seasonal and pandemic influenza viruses and support the potential of this antibody in the prevention of influenza illness. VIR-2981 was identified using Vir’s proprietary mAb discovery platform. About VIR-1388 VIR-1388 is a preclinical subcutaneously administered HIV T cell vaccine based the T cell-based viral vector platform and has been designed to elicit abundant T cells that recognize HIV epitopes with the goal of creating a safe and effective HIV vaccine. About Sotrovimab Sotrovimab is an investigational SARS-CoV-2 neutralizing monoclonal antibody that was developed in collaboration with GSK. The antibody binds to an epitope on SARS-CoV-2 shared with SARS-CoV-1 (the virus that causes SARS). Sotrovimab, which incorporates Xencor, Inc.’s Xtend™ technology, has been designed to achieve high concentration in the lungs to achieve optimal penetration into airway tissues affected by SARS-CoV-2 and to have an extended half-life. Sotrovimab was identified using Vir’s proprietary mAb discovery platform. Sotrovimab is currently not authorized in the US. About VIR-7229 VIR-7229 is an investigational next generation COVID-19 monoclonal antibody with a distinct combination of potency, breadth and viral inescapability. VIR-7229 is designed as a prophylactic for COVID-19 and was identified using Vir’s proprietary mAb discovery platform. VIR-7229 incorporates Xencor, Inc.’s Xtend™ technology and is affinity matured using machine learning to increase its effectiveness in binding to SARS-CoV and SARS-CoV-2 variants. The development of VIR-7229 has been supported in whole or in part with federal funds from the Department of Health and Human Services (HHS); Administration for Strategic Preparedness and Response (ASPR); Biomedical Advanced Research and Development Authority (BARDA), under Other Transaction Number: 75A50122C00081. About VIR-8190 VIR-8190 is an investigational dual specificity monoclonal antibody that has the ability to potently neutralize both respiratory syncytial virus (RSV) and human metapneumovirus (hMPV) strains. RSV and HMPV are recognized as significant causes of lower respiratory tract disease in high-risk populations, including infants and immunocompromised individuals. VIR-8190 was identified using Vir’s proprietary mAb discovery platform. About VIR-1949 VIR-1949 is an investigational therapeutic vaccine based the T cell-based viral vector platform that is designed to treat HPV-related high-grade squamous epithelial pre-cancer lesions (HSIL) and cancers. This vaccine uses HCMV as the vaccine vector. Based on preclinical data, HCMV vectors have the potential to induce high frequencies of antigen-specific, tissue-localizing effector memory T cells. About Vir Biotechnology, Inc. Vir Biotechnology, Inc. is an immunology company focused on powering the immune system to transform lives by treating and preventing infectious diseases and other serious conditions, including viral-associated diseases. Vir has assembled two technology platforms that are designed to modulate the immune system by exploiting critical observations of natural immune processes. Its current clinical development pipeline consists of product candidates targeting hepatitis delta and hepatitis B viruses and human immunodeficiency virus. Vir has several preclinical candidates in its pipeline, including those targeting influenza A and B, COVID-19, RSV/MPV and HPV. 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; Vir’s cash balance; Vir’s financial guidance; Vir’s future financial and operating results and its expectations related thereto; potential of, and expectations for, Vir’s pipeline; Vir’s clinical and preclinical development programs, clinical trials, including the enrollment of Vir’s clinical trials, and the expected timing of data readouts and presentations; the potential benefits, safety, and efficacy of Vir’s investigational therapies; and risks and uncertainties associated with drug development and commercialization. Many important factors may cause differences between current expectations and actual results, including uncertainty as to whether the anticipated benefits of the BARDA collaboration can be achieved; unexpected safety or efficacy data or results observed during clinical trials or in data readouts; the timing and outcome of Vir’s planned interactions with regulatory authorities; difficulties in obtaining regulatory approval; uncertainty as to whether the anticipated benefits of Vir’s collaborations with other companies can be achieved; difficulties in collaborating with other companies; challenges in accessing manufacturing capacity; clinical site activation rates or clinical trial enrollment rates that are lower than expected; 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, Vir’s use of artificial intelligence and machine learning in its efforts to engineer next-generation proteins and in other research and development efforts; the timing and amount of actual expenses, including, without limitation, Vir’s anticipated combined GAAP R&D and SG&A expenses; 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. VIR BIOTECHNOLOGY, INC. Condensed Consolidated Balance Sheets (in thousands, except share and per share data) (unaudited) December 31, 2023 2022 ASSETS CURRENT ASSETS: Cash and cash equivalents $ 241,576 $ 848,631 Short-term investments 1,270,980 1,521,517 Restricted cash and cash equivalents, current 13,268 12,681 Equity investments 9,853 31,892 Prepaid expenses and other current assets 52,549 104,356 Total current assets 1,588,226 2,519,077 Intangible assets, net 22,565 32,755 Goodwill 16,937 16,937 Property and equipment, net 96,018 105,609 Operating right-of-use assets 71,182 82,557 Restricted cash and cash equivalents, noncurrent 6,448 6,656 Long-term investments 105,275 23,927 Other assets 12,409 14,570 TOTAL ASSETS $ 1,919,060 $ 2,802,088 LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES: Accounts payable $ 6,334 $ 6,422 Accrued and other liabilities 104,220 489,090 Deferred revenue, current 64,853 15,517 Total current liabilities 175,407 511,029 Deferred revenue, noncurrent 1,526 53,207 Operating lease liabilities, noncurrent 111,673 123,837 Contingent consideration, noncurrent 25,960 24,937 Other long-term liabilities 14,258 11,115 TOTAL LIABILITIES 328,824 724,125 Commitments and contingencies (Note 10) STOCKHOLDERS’ EQUITY: Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of December 31, 2023 and 2022, respectively; no shares issued and outstanding as of December 31, 2023 and 2022 — — Common stock, $0.0001 par value; 300,000,000 shares authorized as of December 31, 2023 and 2022, respectively; 134,781,286 and 133,236,687 shares issued and outstanding as of December 31, 2023 and 2022, respectively 13 13 Additional paid-in capital 1,828,862 1,709,835 Accumulated other comprehensive loss (815 ) (9,122 ) (Accumulated deficit) retained earnings (237,824 ) 377,237 TOTAL STOCKHOLDERS’ EQUITY 1,590,236 2,077,963 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 1,919,060 $ 2,802,088 VIR BIOTECHNOLOGY, INC. Condensed Consolidated Statements of Operations (in thousands, except share and per share data) (unaudited) Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Revenues: Collaboration revenue $ 8,858 $ 21,609 $ 37,266 $ 1,505,469 Contract revenue 744 180 2,228 52,714 License revenue from a related party — — — 22,289 Grant revenue 7,185 27,621 46,686 35,325 Total revenues 16,787 49,410 86,180 1,615,797 Operating expenses: Cost of revenue 798 5,996 2,765 146,319 Research and development 111,915 155,173 589,671 474,648 Selling, general and administrative 43,090 38,743 178,049 161,762 Total operating expenses 155,803 199,912 770,485 782,729 (Loss) income from operations (139,016 ) (150,502 ) (684,305 ) 833,068 Other income (loss): Change in fair value of equity investments (992 ) 8,879 (21,888 ) (111,140 ) Interest income 20,736 16,172 86,990 28,092 Other (expense) income, net (1,485 ) (26,187 ) (8,991 ) 4,260 Total other income (loss) 18,259 (1,136 ) 56,111 (78,788 ) (Loss) income before benefit from (provision for) income taxes (120,757 ) (151,638 ) (628,194 ) 754,280 Benefit from (provision for) income taxes 4,784 50,035 13,077 (238,443 ) Net (loss) income $ (115,973 ) $ (101,603 ) $ (615,117 ) $ 515,837 Net loss attributable to noncontrolling interest $ — $ — $ (56 ) $ — Net (loss) income attributable to Vir $ (115,973 ) $ (101,603 ) $ (615,061 ) $ 515,837 Net (loss) income per share attributable to Vir, basic $ (0.86 ) $ (0.76 ) $ (4.59 ) $ 3.89 Net (loss) income per share attributable to Vir, diluted $ (0.86 ) $ (0.76 ) $ (4.59 ) $ 3.83 Weighted-average shares outstanding, basic 134,608,811 133,154,960 134,130,924 132,606,767 Weighted-average shares outstanding, diluted 134,608,811 133,154,960 134,130,924 134,810,908

– Initial SOLSTICE data suggests the potential of VIR-3434 + VIR-2218 to address the unmet need for a highly efficacious hepatitis delta therapy – – New MARCH Part B data demonstrate that VIR-3434 may play an important role in achieving a functional cure for chronic hepatitis B – – Conference call scheduled for 1:45 p.m. PT / 4:45 p.m. ET, November 13, 2023 – SAN FRANCISCO--(BUSINESS WIRE)-- VIR BIOTECHNOLOGY, Inc. (Nasdaq: VIR) today announced it will be presenting new data from its ongoing Phase 2 SOLSTICE and MARCH trials evaluating the potential clinical impact that VIR-3434, an investigational monoclonal antibody (mAb), and VIR-2218, an investigational small interfering ribonucleic acid (siRNA), could have for chronic hepatitis delta (CHD) and chronic hepatitis B (CHB) patients at the American Association for the Study of Liver Diseases (AASLD) The Liver Meeting®. These include one late-breaking oral presentation and one late-breaking poster presentation. Phase 2 SOLSTICE (CHD) Initial data to be presented in a late-breaking oral presentation from the ongoing Phase 2 SOLSTICE clinical trial demonstrated that after three subcutaneous doses of either VIR-3434 or VIR-2218 monotherapy, six patients rolled over into combination therapy with VIR-3434 and VIR-2218. Of the five participants receiving combination therapy who have reached Week 12, 100% had HDV RNA less than the lower limit of quantification1 with 80% (4 of 5) having undetectable HDV RNA2. To date, no participants receiving the combination therapy or VIR-3434 monotherapy have experienced ALT elevations relative to their baseline. ALT elevations >250 IU/ml were observed in two participants who received VIR-2218 monotherapy. “Chronic hepatitis delta is the most aggressive form of viral hepatitis. There are few treatment options for people living with HDV infection. Undetectable HDV RNA is an important endpoint associated with clinical benefit. These early results from SOLSTICE are unprecedented, with 80% of participants being undetectable at Week 12 of combination therapy,” said 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. “If this result can be reproduced in a much larger group of participants, I believe this potentially once monthly therapy could be transformative for patients.” “CHD impacts over 12 million people worldwide and approximately 100,000 people here in the United States,” said Phil Pang, M.D., Ph.D., Vir’s Executive Vice President, Chief Medical Officer. “This data highlights Vir’s commitment to developing a game-changing chronic suppressive therapy for this rare disease.” The company expects to report additional SOLSTICE data for VIR-3434 + VIR-2218 in the second quarter of 2024. The Company is also evaluating VIR-3434 as monotherapy given twice monthly as part of the SOLSTICE trial. Phase 2 MARCH Part B (CHB) A late-breaking poster presenting new data from the ongoing MARCH Part B trial demonstrates that HBsAg loss rates at the end of treatment (EOT) for the combination of VIR-3434 + VIR-2218 with and without peginterferon alpha (PEG-IFN-α), when given for 24 weeks, are approximately three times higher than the 5.6% EOT rate previously reported for VIR-2218 + PEG-IFN-α. Specifically, at 24 weeks, 15.0% and 14.3% of participants achieved HBsAg loss at EOT for VIR-3434 + VIR-2218 and VIR-2218 + VIR-3434 + PEG-IFN-α, respectively. In addition, anti-HBs antibody titers > 10 mIU/mL at EOT were detected in 52% (11 of 21) of participants in the triple combination of VIR-3434 + VIR-2218 + PEG-IFN-α cohort versus 11% (2 of 18) with VIR-2218 + PEG-IFN-α. “The higher proportion of participants achieving anti-HBs titers with the addition of VIR-3434 to VIR-2218 and peginterferon alpha strongly suggests that VIR-3434 not only contributes to HBsAg loss through clearance of HBsAg, but also has the ability to reawaken the immune system and generate HBV-specific immunity,” said Edward Gane, M.D., Professor of Medicine at the University of Auckland, New Zealand, and Chief Hepatologist, Transplant Physician and Deputy Director of the New Zealand Liver Transplant Unit at Auckland City Hospital. “This data implies VIR-3434 can function as an immunostimulant.” Post treatment data will also be presented, showing that two participants with the highest peak anti-HBs titers who received 24 weeks of VIR-3434 + VIR-2218 + PEG-IFN-α maintained HBsAg loss through post-treatment Week 12. Rebound of HBsAg after EOT was observed in all other participants (19 of 21). The Company will continue to follow all participants through post-treatment Week 24 and beyond. The new MARCH Part B data builds upon the previously reported VIR-2218 + PEG-IFN-α data in which the Company demonstrated the potential for its siRNA VIR-2218 to enhance EOT and post-treatment HBsAg loss rates: 30% of participants receiving up to 48 weeks of combination therapy achieved EOT HBsAg loss and 16% achieved a sustained HBsAg loss 24 weeks after EOT. “It is important to remember that while these are small participant numbers, this immunologic data is the first evidence that, when part of a combination regimen, our vaccinal antibody VIR-3434 has the potential to play an important role in facilitating a functional cure for patients living with chronic hepatitis B. I am therefore very much looking forward to seeing what will happen when VIR-3434 and VIR-2218 are given, with and without peginterferon alpha, for 48 weeks,” said Pang. “What has been repeatedly observed with peginterferon immunotherapy is that the majority of the benefit occurs after the first 24 weeks of treatment. Thus, we may be seeing just the beginnings of the potential of our regimens.” The Company is on track for sharing the MARCH Part B 48-week EOT data in the fourth quarter of 2024. Late-Breaker Oral Presentation – Phase 2 SOLSTICE The Monoclonal Antibody VIR-3434 And siRNA VIR-2218 for the Treatment of Chronic Hepatitis D Virus: Preliminary Results from the Phase 2 SOLSTICE Trial (Abstract #5004) Date: Monday, November 13 at 3:00 p.m. ET 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 Late-Breaker Poster Presentation – Phase 2 MARCH Part B VIR-2218 and VIR-3434 With or Without Pegylated Interferon Alfa-2A for the Treatment of Chronic HBV Infection: End of Treatment (EOT) Results After 24 Weeks of Therapy (March Study Part B) (Abstract #48500) Date: Monday, November 13 at 1:00 p.m. ET Presenter: Edward Gane, M.D., Professor of Medicine at the University of Auckland, New Zealand, and Chief Hepatologist, Transplant Physician and Deputy Director of the New Zealand Liver Transplant Unit at Auckland City Hospital The abstracts for these and the other six AASLD presentations are available under Events & Presentations in the Investors section of the Vir website here. The final presentations will be posted after 3:30 pm ET today. Vir will host an investor conference call to discuss the Phase 2 CHD & CHB AASLD data at 1:45 p.m. Pacific Time / 4:45 p.m. Eastern Time on November 13th. A live webcast will be available on and will be archived on for 30 days. About Chronic Hepatitis B Chronic hepatitis B (CHB) infection remains an urgent global public health challenge associated with significant morbidity and mortality. Approximately 300 million people around the world are living with CHB, and approximately 900,000 of them die from associated complications each year. These patients are significantly underserved by existing therapies with low functional cure rates, lifelong daily therapy and/or poor tolerability. Vir is working to achieve a functional cure for the millions of people with CHB around the world through its broad and differentiated portfolio. About Chronic Hepatitis Delta Chronic hepatitis delta (CHD) infection occurs as a simultaneous co-infection or super-infection with chronic hepatitis B. An estimated 12 million people globally are infected with CHD, representing approximately 5% of those infected with CHB. CHB-CHD co-infection is considered the most severe form of chronic viral hepatitis due to more rapid progression toward hepatocellular carcinoma and liver-related death. About VIR-3434 VIR-3434 is an investigational subcutaneously administered antibody designed to block entry of hepatitis B and hepatitis delta viruses into hepatocytes and to reduce the level of virions and subviral particles in the blood. VIR-3434, which incorporates Xencor’s Xtend™ and other Fc technologies, has been engineered to potentially function as a T cell vaccine against hepatitis B virus and hepatitis delta virus, as well as to have an extended half-life. VIR-3434 was identified using Vir’s proprietary monoclonal antibody discovery platform. About VIR-2218 VIR-2218 is an investigational subcutaneously administered hepatitis B virus-targeting small interfering ribonucleic acid (siRNA) that Vir believes has the potential to stimulate an immune response and have direct antiviral activity against hepatitis B virus and hepatitis delta virus. It is the first siRNA in the clinic to include Enhanced Stabilization Chemistry Plus (ESC+) technology to enhance stability and minimize off-target activity, which potentially could result in an increased therapeutic index. VIR-2218 is the first asset in the Company’s collaboration with Alnylam Pharmaceuticals, Inc. to enter clinical trials. About Vir Biotechnology, Inc. Vir Biotechnology, Inc. is an immunology company focused on combining cutting-edge technologies to treat and prevent infectious diseases and other serious conditions. Vir has assembled two technology platforms that are designed to stimulate and enhance the immune system by exploiting critical observations of natural immune processes. Its current clinical development pipeline consists of product candidates targeting hepatitis delta and hepatitis B viruses and human immunodeficiency virus. Vir has several preclinical candidates in its pipeline, including those targeting influenza A and B, COVID-19, RSV/MPV and HPV. 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 VIR-3434 and VIR-2218, the potential benefits, safety and efficacy of VIR-3434 and VIR-2218 (as monotherapies and as combination therapies with and without PEG-IFN-α), data from Vir’s multiple ongoing trials evaluating VIR-3434 and VIR-2218, Vir’s plans and expectations for its HBV and HDV portfolios, 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 the COVID-19 pandemic, 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. 1 The lower limit of quantitation (LLOQ) of HDV RNA is <63 IU/mL and the limit of detection (LOD) is 14 IU/mL. 2 Undetectable HDV RNA is defined as < limit of detection, 14 IU/mL or ≥ 2 log10 IU/mL decrease from baseline.