Following decisions in 2023 to back away from its lead neurological therapies and conserve cash, Eliem Therapeutics Inc. found a vote of investor confidence and a new direction through its acquisition of privately held Tenet Medicines Inc. and its anti-CD19 antibody for autoimmune disease.

With two respiratory syncytial virus (RSV) vaccines approved by the U.S. FDA in 2023 and a third nearing its May PDUFA date, decades of research has finally provided infants and older adults protection from the disruptive and sometimes deadly virus. But what about people in the middle, particularly those with certain chronic medical conditions? New York-based Pfizer Inc. rolled out phase III data April 9 showing that its approved RSV vaccine, Abrysvo (RSVpreF), met primary endpoints in adults ages 18 to 59 who were at high risk of RSV.

In a long and winding regulatory road that began with two complete response letters 15 years ago, Allschwil, Switzerland-based Basilea Pharmaceutica Ltd. finally gained U.S. FDA approval of its intravenous cephalosporin antibiotic, Zevtera (ceftobiprole medocaril sodium), to treat Staphylococcus aureus bacteremia, acute bacterial skin and skin structure infections (ABSSSI) and community-acquired bacterial pneumonia.

Jumping in for the first time to the hot antibody-drug conjugate (ADC) space, Paris-based Ipsen SA pulled in exclusive global rights to a preclinical ROR1-targeting candidate from Sutro Biopharma Inc. in a deal worth up to $900 million. STRO-003, the first ADC to join Ipsen’s portfolio, contains an anti-ROR1 human IgG1 antibody (SP-11385) conjugated to an exatecan warhead, or payload.

Xilio Therapeutics Inc. retreated with its lead oncology IL-2 drug, XTX-202, after phase II data indicated stable disease was the best response, prompting the company to reprioritize its pipeline and cut its workforce by 21% – but investors focused more on a $647.5 million IL-12 program deal the company signed with Gilead Sciences Inc., as well as an $11.3 million private placement financing.

Despite numerous marketed anti-seizure medications in the U.S., patients with epilepsy continue to experience breakthrough seizures and tolerability issues compounded with drug interactions and side effects, leaving room for companies like Praxis Precision Medicines Inc. to fill treatment gaps. The Boston-based company presented phase IIa proof-of-concept data March 26 showing that in an evaluation of photo paroxysmal response, its once-daily oral small-molecule treatment, PRAX-628, resulted in a complete response in three epilepsy patients receiving 45 mg of the drug and four patients receiving 15 mg for a combined complete response rate of 88%.

Validating Fusion Pharmaceuticals Inc.’s radiopharmaceutical technology and manufacturing capabilities, Astrazeneca plc offered to buy the firm for $2 billion up front in cash, plus a contingent value right that could raise the total deal value by another $400 million.

Technology of genomically recoded organisms borne out of Yale and Stanford university laboratories and housed at Khosla Ventures-backed Pearl Bio received validation on March 12 through a $1 billion deal signed with Merck & Co. Inc. Cambridge, Mass.-based Pearl, which emerged from stealth last year, is eligible for the funds through up-front, option and milestone payments, plus potential royalties on sales of deal-related products that gain approval. The synthetic biology company aims to create a new class of multi-functionalized therapeutics with tunable properties. The deal with Rahway, N.J.-based Merck will focus on new cancer biologics.