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Prothena (PRTA) to Sell ATTR Amyloidosis Program to Novo Nordisk

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Prothena Corporation PRTA announced a collaboration with Denmark-based Novo Nordisk NVO, whereby the latter will acquire Prothena’s clinical-stage antibody, PRX004, and broader ATTR amyloidosis program.

In exchange, Prothena is eligible to receive development and sales milestone payments of approximately $1.2 billion, including $100 million in upfront and near-term clinical milestone payments.

The candidate is a phase II-ready, anti-amyloid immunotherapy designed to deplete the amyloid deposits that are associated with the disease pathology of ATTR amyloidosis. Prothena has completed a phase I open-label, multicenter dose-escalation study of PRX004 in patients with hereditary forms of ATTR. In the study, 21 patients with hereditary ATTR Amyloidosis (hATTR) were enrolled to receive PRX004 intravenously once every 28 days for up to 3 infusions in the dose-escalation phase of the study. The eligible patients who completed dose-escalation were provided the opportunity to enroll in the long-term extension (LTE) portion of the study.

Novo Nordisk will develop the phase II antibody, PRX004, for the rare heart disease, ATTR cardiomyopathy, which is an underdiagnosed and potentially fatal form of ATTR amyloidosis, characterized by the build-up of amyloid deposits in cardiac tissue.

The decision to sell its ATTR amyloidosis program comes at a strategic point for the company. The company’s pipeline includes programs for the potential treatment of Alzheimer’s disease (AD), including PRX012 that targets Aβ (Amyloid beta). The partnered programs include prasinezumab, in collaboration with Roche RHHBY, for the potential treatment of Parkinson’s disease and other related synucleinopathies, and programs that target tau (PRX005), TDP-43, and an undisclosed target in collaboration with Bristol Myers Squibb for the potential treatment of AD, amyotrophic lateral sclerosis (ALS), or other neurodegenerative diseases.

Shares of the company have surged 352.9% in the year so far against the industry's decline of 2%.

Zacks Investment Research
Zacks Investment Research

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Most of the upside came after the FDA approval of Biogen’s BIIB Alzheimer's disease (AD) drug, Aduhelm. On Jun 7, 2021, Biogen and partner Eisai won the FDA approval for Aduhelm (aducanumab-avwa) as the first and only AD treatment.

The approval has brought the spotlight on other companies as well who are developing drugs for AD and investors are optimistic about the prospects of these pipeline candidates. Prothena’s PRX005 is being evaluated for the treatment of AD. The company has another candidate, PRX012, which is a potential treatment for AD.

The divestment of its ATTR amyloidosis program will enable Prothena to focus on its neurodegenerative drugs.

Meanwhile, the abovementioned acquisition will diversify Novo Nordisk’s diabetes and obesity portfolio.

Prothena currently carries a Zacks Rank #3 (Hold). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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Biogen Inc. (BIIB) : Free Stock Analysis Report

Roche Holding AG (RHHBY) : Free Stock Analysis Report

Novo Nordisk AS (NVO) : Free Stock Analysis Report

Prothena Corporation plc (PRTA) : Free Stock Analysis Report

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