Shares of clinical-stage biotech Prothena Corp skyrocketed over 20% on Monday amid reports the company is exploring strategic options including a potential sale. Prothena specializes in developing therapies for neurodegenerative diseases like Alzheimer’s, making it a hot target for larger pharmaceutical firms hungry for new assets in this space.
Based in Ireland and spun off from Elan Corp in 2012, Prothena focuses on protein misfolding disorders. Its pipeline features several promising programs targeting proteins believed to play a key role in Alzheimer’s and other neurological conditions with high unmet need.
Prothena’s lead candidate is birtamimab, an antibody-based therapy for AL amyloidosis in late-stage studies. Results expected later this year or in early 2024 could support regulatory filings. Beyond amyloidosis, the company is going all-in on Alzheimer’s research.
The most advanced Alzheimer’s asset is PRX012, an antibody targeting amyloid beta proteins thought to drive disease progression. Prothena is also developing a dual vaccine dubbed PRX012/PRX123 against amyloid beta and tau proteins. Reducing both proteins simultaneously may provide better clinical benefit.
These programs have already attracted partnership interest. Prothena has neuroscience collaborations with pharmaceutical giants Bristol Myers Squibb, Roche, and Novo Nordisk. Just this month, Bristol Myers exercised an option to license PRX005, Prothena’s anti-tau antibody, for nearly $60 million upfront.
But Prothena may seek an acquirer willing to buy the entire company outright. The potential payoff from Alzheimer’s success is massive given the huge unmet need. With late-stage data upcoming, now may be the optimal time for a sale.
Any acquirer would gain full access to Prothena’s Alzheimer’s pipeline, along with its programs for Parkinson’s disease and other neurodegenerative disorders. Adding these diverse assets to an existing neuroscience portfolio could create exciting synergistic opportunities.
Prothena’s small size also makes it financially digestible for big pharma buyers. The company’s market cap sits around $2.5 billion, presenting a worthwhile gamble for majors like Roche or Bristol Myers with scores of billions in annual revenue.
News of the company exploring strategic options sent Prothena shares surging 25% on nearly 6x normal volume. Investors are betting a buyout could be announced in coming months. Prothena’s pipeline progress makes it an alluring target.
Upcoming clinical results will prove whether Prothena’s Alzheimer’s bet pays off scientifically. But from a business perspective, the stars may be aligning for a near-term acquisition. Cash-rich pharmas need new prospects to bolster aging portfolios, and Prothena boasts some of the most exciting neurological assets out there.
If Prothena’s Alzheimer’s programs demonstrate strong efficacy, bidding wars could drive the buyout price sky-high. With biotech valuations rebounding from lows, management may see now as the perfect time to capitalize on these assets. Whether via sale, partnership or remaining independent, Prothena’s future direction should become clearer soon.
