Mabloc LLC has established a strategic partnership with Instituto Butantan to co-develop and manufacture MBL-YFV-01, a monoclonal antibody therapy for yellow fever virus (YFV) infection, including emergency post-exposure use.

Bluejay Therapeutics Inc.’s lead compound, the fully human monoclonal antibody brelovitug (BJT-778), produced positive virologic response data in the company’s phase II study of chronic hepatitis D virus, a condition with no approved treatment in the U.S.

Takeda Pharmaceutical Co. Ltd.’s anti-CD38 antibody, mezagitamab (TAK-079), sustained kidney function up to 18 months after treatment ended in patients with primary immunoglobulin A (IgA) nephropathy, showing early signs of disease modification in a phase Ib study presented at the American Society of Nephrology’s Kidney Week 2025 in Houston.

A primary endpoint failure but with outstanding estimated glomerular filtration rates and impressive safety data in the phase II trial called Bestow are adding up to plans for later-stage work with Eledon Pharmaceuticals Inc.’s tegoprubart (tego) for preventing rejection in de novo kidney transplant.

Takeda Pharmaceutical Co. Ltd.’s anti-CD38 antibody, mezagitamab (TAK-079), sustained kidney function up to 18 months after treatment ended in patients with primary immunoglobulin A (IgA) nephropathy, showing early signs of disease modification in a phase Ib study presented at the American Society of Nephrology’s Kidney Week 2025 in Houston.

Researchers at Calluna Pharma AS, Agiana Pharmaceuticals AS and Roskilde University have developed the first humanized IgG4 antibody that inhibits S100A4, which is a calcium-binding protein that helps drive fibrotic inflammatory diseases.

The overexpression of fibroblast growth factor receptor 2b (FGFR2b) is tied to tumor progression in several malignancies, such as cholangiocarcinoma, HER2-negative gastric cancer and breast cancer. Lunan Pharmaceutical Group Corp. has developed a novel IgG1 monoclonal antibody against FGFR2b, LNF-2102, for the potential treatment of cancer.

The $12.5 billion acquisition of Avidity Biosciences Inc. by Novartis AG strengthens the company’s neuroscience pipeline and marks the second biggest deal that’s been announced this year. It also is the fifth M&A deal in the past five weeks to top the $1 billion mark, a sign that the market may be strengthening.

Inhibrx Biosciences Inc.’s monoclonal antibody for treating advanced or metastatic, unresectable chondrosarcoma hit its primary endpoint in a registrational phase II study, doubling the company’s stock on Oct. 24. Top-line data from the placebo-controlled study of ozekibart (INBRX-109) produced statistically significant and clinically meaningful improvement in median progression-free survival in a tough-to-treat patient population that has few remaining options.

The failure of Alector Inc.’s phase III study of latozinemab in treating dementia halved the company’s stock on Oct. 22. That is also about the same percentage of staff that Alector is letting go after the clinical trial stumble.