Biopharma stocks, as measured on the BioWorld Biopharmaceutical Index, underperformed both the Nasdaq Biotechnology Index and the Dow Jones Industrial Average through the first four months of 2026.

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.

Biogen Inc. has consolidated full global rights to felzartamab through an $850 million deal with TJ Biopharma Co. Ltd. April 20, closing the chapter on a complex 10-year license saga.

The ongoing controversy over the effectiveness of anti-amyloid drugs is about to get more heated, after a review of clinical trials showed statistically significant results do not read across to clinical benefit for patients with Alzheimer’s disease.

Alloy Therapeutics Inc. has entered into a collaboration and license agreement with Biogen Inc. for the use of Alloy’s Anticlastic ASO platform to accelerate the development of innovative oligonucleotide therapeutics.

Subcutaneous formulation technology, microbiomes and oncological assets drove dealmaking in South Korea’s biotech sector this week. 

Biogen Inc. hardly blinked at the competition faced by Apellis Pharmaceuticals Inc. as the two companies sealed a deal whereby the former has agreed to acquire all outstanding shares of the latter for $41 each, or about $5.6 billion.

Subcutaneous (SC) formulation technology, microbiomes and oncological assets drove dealmaking in South Korea’s biotech sector this week. 

Stoke Therapeutics Inc.’s speeded-up timeline for zorevunersen, the antisense oligonucleotide in development with Biogen Inc. as a first-in-class potential disease-modifying treatment for Dravet syndrome, put the rare, severe form of lifelong epilepsy in the spotlight. The news involved completion of enrollment and a phase III data readout from the Emperor study, as officials said signups of 150 patients are expected in the second quarter of the year, which puts the study on track for data in mid-2027.