In its largest acquisition to date, Incyte Inc. snagged rights to phase III-stage VGA-039, a monoclonal antibody the firm said could offer a new standard of care in von Willebrand disease (VWD), in a buyout of Vega Therapeutics Inc. that includes a $1.25 billion up-front payment and up to $750 million tied to the achievement of sales milestones. The announcement was followed shortly by news of another buyout, Johnson & Johnson’s deal to acquire Firefly Bio Inc. for $1 billion in cash, both moves continuing this year’s trend of larger, more strategic M&A transactions.

Antibody-drug conjugate (ADC) specialist Ona Therapeutics SL has closed an oversubscribed series B at $86.6 million, as clinical development of the lead program ONA-255 in advanced treatment-resistant breast cancer gathers steam.

Pfizer Inc. is paying Innovent Biologics Co. Ltd. $650 million up front and up to $9.85 billion in milestones, plus royalties, to collaborate across 12 early stage and de novo antibody-drug conjugates (ADCs) and multispecific antibodies for oncology.

“I need to be honest with you about something important. Most previous Ebola outbreaks in the Democratic Republic of Congo (DRC) were caused by a virus called Ebola Zaire, for which we have vaccines and treatments. This outbreak is caused by a different virus called Ebola Bundibugyo. There are currently no approved vaccines or treatments for it.” This was the stark message from Tedros Adhanom Ghebreyesus, director general of the World Health Organization (WHO) in an open letter to the people of the DRC, as he traveled to the country on Friday, May 29.

Apogee Therapeutics Inc. loaded up on what could total as much as $1.3 billion in financial fuel from Blackstone Life Sciences funds that will be used to propel zumilokibart (zumi), which yielded positive phase II results in atopic dermatitis (AD). A phase III experiment with the anti-IL-13 antibody is planned for the second half of this year, pending talks with regulators.

Infex Therapeutics Ltd. has published positive phase IIa data for its lead program, RESP-X, in the treatment of exacerbations of chronic respiratory infections caused by Pseudomonas aeruginosa and is now laying the ground for phase IIb development, after raising £4.3 million (US$5.8 million) in new capital.

Shares of Immunovant Inc. (NASDAQ:IMVT) gained 35% after the firm disclosed early but “compelling” data from a phase IIb study testing next-generation FcRn inhibitor IMVT-1402 in patients with difficult-to-treat rheumatoid arthritis (D2T RA), including those whose disease has persisted despite treatment with TNF and JAK inhibitors.

Biogen Inc. has decided to advance diranersen (BIIB-080) into registrational trials for early Alzheimer’s disease, even though the antisense oligonucleotide therapy, originally discovered by Ionis Pharmaceuticals Inc., missed its phase II primary endpoint.

Curacle Co. Ltd. inked a potential $1.07 billion deal with U.S.-based “newco” Memento Medicines on May 10, granting the latter exclusive global rights to develop and commercialize preclinical TIE2/VEGF-directed bispecific antibody MT-103 for retinal disorders.

Climb Bio Inc. outlined May 5 an enticing data spill ahead this year with Fc-enhanced monoclonal antibody budoprutug (budo) in autoimmune diseases. Mizuho analyst Joseph Catanzaro appreciated in his report Wellesley Hills, Mass.-based Climb’s “conviction that CD19 represents a best-in-class pan-B-cell depletion target across antibody-mediated autoimmune diseases – a relative white space for conventional mAbs.”