Gene therapy has had its commercial struggles in the past year. The cost to patients is in the millions and fewer are stepping forward for treatment than companies would like. While development continues in this game-changing field, some have struggled with regulatory authorities during development while others have just stepped away altogether.

The U.S. FDA’s green lighting of Omeros Corp.’s Yartemlea (narsoplimab) makes it the first approved treatment for hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA), a life-threatening complication of hematopoietic stem cell (HSC) transplantation. The BLA for narsoplimab, a fully human monoclonal antibody that inhibits the enzyme mannan-binding lectin-associated serine protease-2, had a Dec. 26 PDUFA date.

Needle-phobic obesity patients got their first workaround with the U.S. FDA clearance of Novo Nordisk A/S’ once-daily GLP-1 Wegovy (semaglutide) pill, the first of its kind.

Cytokinetics Inc. scored U.S. FDA marketing clearance Dec. 19 for Myqorzo (aficamten) 5-mg, 10-mg, 15-mg, and 20-mg tablets to improve functional capacity and symptoms in adults with symptomatic obstructive hypertrophic cardiomyopathy (oHCM). Shares of the South San Francisco-based firm rose 4.6%, or $2.88, on Dec. 22 to close at $65.60.

In 2025, science saw its breakthroughs, which BioWorld will be covering as part of our end-of-the-year wrap-up. But the biggest science story of 2025 is not about any scientific advance. It is the politicized destruction of U.S. science, and the dismantling of a scientific ecosystem that has been the envy of the world since it emerged after Germany destroyed its own pre-eminence in the 1930s.

The U.S. FDA approved 18 drugs in November, down from 20 in October, bringing the total number of clearances to 199 through the first 11 months of the year. The number is about 5% lower than the 209 approvals recorded over the same period in 2024 but more than every prior year.

Daiichi Sankyo Inc. told BioWorld it voluntarily placed a partial hold in recruitment and enrollment in the phase III IDeate-Lung02 study of antibody-drug conjugate ifinatamab deruxtecan because of a higher than anticipated incidence of grade 5 interstitial lung disease events. The company did not say how many deaths there had been.

The U.S. FDA announced Dec. 15 that it will take a more relaxed approach regarding the use of real-world evidence (RWE) in drug and device application reviews. Specifically, new guidance for device premarket applications will not require identifiable individual patient data collected from real-world data sources, and the agency indicated it intends to consider similarly updating guidance regarding submissions for drugs and biologics.

ADEL Inc. closed a year-end licensing deal worth up to $1.04 billion with Sanofi SA for ADEL-Y01, a specific tau-targeting Alzheimer’s disease drug candidate in a U.S. phase I study.

Two new therapies are now FDA approved to treat the sexually transmitted infection gonorrhea, with Innoviva Inc.’s Nuzolvence (zoliflodacin) and GSK plc’s Blujepa (gepotidacin) offering additional antibiotic options comparable to standard of care. Both products had fast track, qualified infectious disease product and priority review designations.