Pfizer Inc. is threatening legal action at an attempt by Novo Nordisk A/S to scupper its acquisition of Metsera Inc., with an unsolicited $9 billion offer for the anti-obesity specialist. That trumps Pfizer’s agreed bid made in September, which valued New York-based Metsera at $7.3 billion.

With a modest $7 million up front but an ultimate payout potentially topping $1 billion on the line, Modex Therapeutics Inc. will collaborate with Regeneron Pharmaceuticals Inc. to find and develop multispecific antibodies for treating multiple indications.

Qyuns Therapeutics Co. Ltd. signed a potential $1.07 billion license deal with Roche Holding AG, granting the latter exclusive rights to QX-031N – a human thymic stromal lymphopoietin and interleukin-33)-targeting bispecific antibody.

Sovargen Co. Ltd. inked a $550 million license deal with Angelini Pharma SpA, granting Angelini development and commercialization rights to SVG-105, a novel antisense oligonucleotide drug candidate in preclinical development as a potential treatment for intractable epilepsy.

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.

Ipsen SA is expanding its cancer portfolio with the €1 billion (US$1.16 billion) acquisition of immuno-oncology specialist Imcheck SAS, and will pay €350 million up front with the balance to come in regulatory and sales-based milestones for the lead program ICT-01.

Takeda Pharmaceutical Co. Ltd. agreed to codevelop and commercialize up to three of Innovent Biologics Co. Ltd.’s immuno-oncology (I-O) and antibody-drug conjugate (ADC) candidates with the signing of a $11.4 billion deal, including $1.2 billion paid up front.

Having reached peace with Jazz Pharmaceuticals plc over litigation related to its U.S. FDA-approved drug, Lumryz (sodium oxybate), Avadel Pharmaceuticals plc agreed to a cash takeover by Alkermes plc valued at about $2.1 billion, a deal Alkermes CEO Richard Pops said “puts us in the sleep market immediately on closing,” which is expected in the first quarter of 2026. All three players are based in Dublin.

Samsung Bioepis Co. Ltd. announced Oct. 21 the signing of a license deal to codevelop, manufacture and commercialize two of Phrontline Biopharma Suzhou Co. Ltd.’s novel bispecific dual-payload antibody-drug conjugate (ADC) candidates.