Shares of Athira Pharma Inc. (NASDAQ:ATHA) plunged almost 66.3%, or $5.60, to close at $2.85 on June 22 after the company disclosed top-line results from its exploratory phase II study with fosgonimeton (ATH-1017, fosgo) in mild-to-moderate Alzheimer’s disease (AD).
Ionis Pharmaceuticals Inc. and Astrazeneca plc, partners on the antisense oligonucleotide inhibitor eplontersen, said interim phase III data showed the candidate had a positive impact on disease progression in patients with hereditary transthyretin-mediated amyloid polyneuropathy, giving them confidence to plan for a U.S. FDA NDA filing in the indication before the end of 2022.
The U.S. FDA’s Psychopharmacologic Drugs Advisory Committee took up the complicated matter of Acadia Pharmaceuticals Inc.’s sNDA for Nuplazid (pimavanserin) to treat hallucinations and delusions associated with Alzheimer’s disease psychosis (ADP).
Shares in Addex Therapeutics Ltd. (Zurich:ADXN) dropped 48% June 17 on news that the company had terminated a pivotal phase IIb/III study of dipraglurant as a potential treatment for dyskinesia in Parkinson’s disease.
Alzheimer’s experts have suggested that future research may involve combination therapies after yet another trial failure involving a drug targeting amyloid – in this case Roche Holding AG’s crenezumab. Originally discovered by Swiss biotech AC Immune SA, of Lausanne, crenezumab failed to slow or prevent cognitive decline in people with a certain mutation that causes early onset in a closely watched trial.
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