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Prothena Corporation (PRTA) investor relations material

Prothena Corporation Cantor Global Healthcare Conference 2025 summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Cantor Global Healthcare Conference 2025 summary4 Sep, 2025

Recent corporate developments

  • Multiple pipeline updates and positive news from partners, including Roche and Novo, with both moving key molecules into phase three studies this year.

  • Restructuring led to a right-sized organization focused on ongoing partner obligations and new partnership opportunities.

  • Shareholder-friendly financial activities, including plans for distributable reserves and potential share repurchase, are underway.

  • Operational clarity and focus on near-term value creation, with $105M in clinical milestones achievable next year.

  • End-of-year cash guidance is $300M, with further 2026 guidance to be provided early next year.

Pipeline and partnership updates

  • Roche is advancing prasinezumab for Parkinson’s disease into phase three, with additional data expected and a large market opportunity projected.

  • Novo Nordisk is moving Kuramitug for ATTR cardiomyopathy into phase three, with a significant milestone payment expected upon enrollment.

  • Four active partnership programs: two entering phase three, one phase two readout in 2027, and one phase one with Bristol Myers Squibb.

  • Ongoing efforts to partner unpartnered programs and fulfill R&D obligations for current collaborations.

  • Partnership economics include up to $755M in milestones and royalties with Roche, and $1.23B in milestones and royalties with Novo Nordisk.

Clinical and scientific highlights

  • PRX012, an anti-amyloid beta antibody for Alzheimer’s, showed strong potency and favorable PK but higher than expected ARIA rates; a transferrin-based approach is being considered to mitigate this.

  • Prasinezumab targets aggregated alpha synuclein in Parkinson’s, with consistent effects across studies and a unique biological profile.

  • Kuramitug targets misfolded transthyretin in ATTR amyloidosis, aiming to clear resident amyloid and prevent new aggregation, with encouraging early clinical data.

  • Phase two and three studies are designed to address both symptomatic and disease-modifying aspects in neurodegenerative diseases.

  • Future milestones include clinical data readouts, regulatory decisions, and potential commercial launches.

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Q3 202511 Nov, 2025
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Frequently asked questions

Prothena Corporation plc is a late-stage clinical biotechnology company focused on the discovery and development of novel therapies for diseases caused by protein dysregulation. The company's portfolio includes a range of investigational humanized antibodies and other therapeutic candidates targeting conditions such as AL amyloidosis, Parkinson's disease, ATTR amyloidosis, and Alzheimer's disease. Prothena's approach leverages insights into the biology of misfolded proteins to develop therapies aimed at changing the course of neurodegenerative and rare peripheral amyloid diseases. The company is headquartered in Dublin, Ireland, and its shares are listed on the Nasdaq.

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