Neurodegenerative disease
In another blow to Prothena’s neurodegenerative disease portfolio, anti-amyloid candidate PRX012 has run into the same problem that larger peers Biogen and Eli Lilly have battled: high rates of swelling in the brain.
AMX0035—approved as Relyvrio in 2022 for amyotrophic lateral sclerosis but voluntarily pulled from the market last year—was unable to distinguish itself from placebo in a mid-to-late-stage trial of progressive supranuclear palsy.
Novartis has bet up to $772 million to gain access to BioArctic’s BrainTransporter platform, which was leveraged in a partnership with Eisai to produce Leqembi.
The platform strategy of using one molecule to target an underlying biological pathway to address many different diseases can be a goldmine for smaller companies. But it also has a unique set of challenges.
The small molecule, vatiquinone, had already flunked a Phase III trial, but the company pushed ahead with an approval bid anyway.
Arguably the FDA’s most anticipated decision this month is for a subcutaneous induction formulation of Biogen and Eisai’s Alzheimer’s drug Leqembi, which, according to Eisai, could “help reduce the burden on healthcare professionals and patients.”
Long-term extension data presented at the Alzheimer’s Association International Conference showed amyloid plaque reaccumulation remained slow at up to 2.5 years of follow-up in patients who were taken off of treatment with Eli Lilly’s anti-amyloid antibody.
Long-term data presented at the Alzheimer’s Association International Conference show Leqembi can help patients stay in the earlier stages of Alzheimer’s disease as compared to the condition’s natural progression.
In a Phase Ib/IIa trial, 91% of patients receiving the highest dose of trontinemab were amyloid negative after seven months of treatment, representing what B. Riley Securities called a “paradigm shift” to first-generation FDA-approved antibodies.
Acknowledging the limits of disease-modifying drugs like Leqembi and Kisunla, companies like Bristol Myers Squibb, Acadia, Otsuka and Lundbeck are renewing a decades-old search for symptomatic treatments, including in high-profile drugs like Cobenfy.
PRESS RELEASES