Infectious disease-focused biopharma stocks, tracked on the BioWorld Infectious Disease Index (BIDI), saw their collective shares roughly follow the path of broader markets like the Nasdaq Biotechnology Index (NBI) and the Dow Jones Industrial Average (DJIA) in early 2026. The BIDI ended April up 3.8%, followed by the DJIA with a 3.31% gain and 2.73% for the NBI, following a similar pattern to 2025.
Astellas Pharma Inc. and Vir Biotechnology Inc. have signed a global co-development pact to advance VIR-5500, Vir’s PRO-XTEN dual-masked CD3 T-cell engager targeting prostate-specific membrane antigen for treating prostate cancer. Under the deal terms, San Francisco-based Vir will receive $335 million in up-front and near-term payments, including $240 million in cash, $75 million in equity investment and a $20 million near-term milestone. Vir is also eligible to receive up to $1.37 billion in development, regulatory and sales-based milestones plus royalties on ex-U.S. sales.
Work at Vir Biotechnology Inc. has led to the identification of 3C-like proteinase (3CLpro; Mpro; nsp5) (SARS-CoV-2; COVID-19 virus) inhibitors reported to be useful for the treatment of SARS-CoV-2 infections (COVID-19).
The BioWorld Infectious Disease Index (BIDI) faced challenges throughout the year but narrowed its losses, ending down 6.28% after hitting a low of -25.12% in late April. By October, the index was down 12.07% and had declined 8.86% for the year as of Nov. 22. However, in January, the BIDI rebounded slightly, gaining 1.85%.
Vir Biotechnology Inc.’s 2024 deal with Sanofi SA is starting to look like a pretty savvy move. The company, which picked up three clinical-stage dual-masked T-cell engagers (TCEs) and rights to the platform technology as part of a pipeline overhaul, reported phase I data for TCE programs targeting HER2 and PSMA that indicated promising efficacy with a low prevalence of the cytokine toxicity that has hampered other TCE programs.
Patients infected with hepatitis C have had the ability to rid their livers of the virus for some time, while patients with chronic hepatitis B virus infection have been required to take medications for the rest of their lives in the hopes of just dampening damage to the liver caused by the virus. But, at The Liver Meeting 2024, Arbutus presented data from the phase IIa Im-prove study suggesting a cure might be on its way with its DNAi drug, which binds to the viral mRNA promoting its cutting, leading to loss of translation of the viral proteins.
Vir Biotechnology Inc.’s focus will look a little different for the latter half of 2024, as the San Francisco-based firm disclosed a restructuring that will cut about a fourth of its workforce and phase out programs targeting influenza and COVID-19 as well as vaccines developed using its T-cell-based viral vector platform.
An expert in hepatitis delta virus said Vir Biotechnology Inc.’s phase II findings with the monoclonal antibody tobevibart and the small interfering ribonucleic acid elebsiran in chronic disease could lead to a “change [in] the entire care cascade and paradigm.” Shares of Vir (NASDAQ:VIR) ended June 5 at $12.66, up $2.08, or 19.7%, on the clinical news.
Wuxi Apptec quit its membership in the Biotechnology Innovation Organization (BIO) after U.S. Congressman Rep. Mike Gallagher (R-Wis.) sent a March 5 letter to Attorney General Merrick Garland, asking the Department of Justice to investigate BIO because its lobbying efforts on behalf of Wuxi suggested it was operating as an unregistered agent of a foreign company while advancing the interests of the People’s Republic of China and the Chinese Communist Party.
Wuxi Apptec quit its membership in the Biotechnology Innovation Organization (BIO) after U.S. Congressman Rep. Mike Gallagher (R-Wis.) sent a March 5 letter to Attorney General Merrick Garland, asking the Department of Justice to investigate BIO because its lobbying efforts on behalf of Wuxi suggested it was operating as an unregistered agent of a foreign company while advancing the interests of the People’s Republic of China and the Chinese Communist Party.
