After decades of trying and dozens of failed trials, amyloid targeting has paid off with the first disease-modifying agents reaching the market. But success does not mean slam dunk. Aduhelm (aducanumab, Biogen Inc.) was dogged by controversy throughout its brief tenure, and Biogen pulled the plug on it in early 2024. Leqembi (lecanemab, Biogen Inc.) has received full approval. In this second installment of a three-part series on Alzheimer’s, BioWorld looks at the nuanced view of amyloid’s role in the disease.
Addex Therapeutics has offloaded its portfolio of preclinical allosteric modulation drugs into Neurosterix, a new company that arrives on the scene with a $63 million series A round.
Ironically, the first person to be diagnosed with what is now Alzheimer’s disease was missing its major risk factor. When she first began showing symptoms of dementia in 1901, Auguste Deter was not particularly old. Despite Deter’s case, aging is the largest risk factor for developing Alzheimer’s, by a large margin. But “geroscience has not been translated into drugs for Alzheimer’s disease,” Howard Fillit, Alzheimer’s Drug Discovery Foundation co-founder and chief scientific officer, told BioWorld. “We’re just starting to see that cross-fertilization now.” This first article of a three-part BioWorld series on Alzheimer’s disease looks at how a group of researchers, as well as some startups, are trying to approach Alzheimer’s via an aging lens.
Alzheimer’s disease (AD) is recognized worldwide for its debilitating symptoms of declining cognitive function and gradual memory loss. What remains less clear is exactly what causes the neurodegenerative disease, and how to treat it. “Alzheimer’s disease is characterized by two key pathologies – beta-amyloid plaques and tau neurofibrillary tangles.” Seung-Yong Yoon, CEO of Adel Inc., told BioWorld. “Adel is looking to develop a tau-targeting drug, considering tau has been more correlated with AD symptom progression, and the industry’s need for tau pipelines.”
Acorda Therapeutics Inc. has filed for bankruptcy and agreed to sell its assets, including rights to its three commercialized drugs, to German biopharma Merz Therapeutics GmbH for $185 million. Palo Alto, Calif.-based Eiger Biopharmaceuticals Inc. also filed for bankruptcy.
Yes, even a phase III protocol for a “failed” trial can constitute prior art, the U.S. Court of Appeals for the Federal Circuit told a lower court April 1 when it returned Janssen Pharmaceuticals Inc. and Teva Pharmaceuticals USA Inc.’s patent squabble for a do-over.
Updated results from Stoke Therapeutics Inc.’s studies of antisense oligonucleotide STK-001 showed a reduced convulsion seizure frequency in those ages 2 to 18 with Dravet syndrome. The new data, which also showed improved cognition and behavior in participants, substantially boosted the company’s stock value and caused analysts to applaud.
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%.
Europe may still await its first disease-modifying Alzheimer’s drug after the EMA postponed its decision on Leqembi (lecanemab, Biogen Inc./Eisai Co. Ltd) on March 22, but leading members of the World Dementia Council were in an optimistic mood when they convened in London four days later.
An asset that some investors may have overlooked came through for Axsome Therapeutics Inc., which rolled out phase III data from the trial called Symphony with AXS-12 (reboxetine), which hit the primary endpoint by significantly reducing cataplexy attacks in narcolepsy patients vs. placebo.