• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Healthallergan-pfizer deal

Allergan Struck a $3.3 Billion Alzheimer’s Drug Deal Right After Its Pfizer Merger Collapsed

By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
By
Sy Mukherjee
Sy Mukherjee
Down Arrow Button Icon
April 7, 2016, 6:25 PM ET
The CEO of Valeant Pharmaceuticals has suggested that Allergan is fat, overstaffed and ripe for big
Photo by Don Bartletti — LA Times via Getty Images

Allergan (AGN) wasted little time resting on its laurels after the implosion of its historic $160 billion proposed megamerger with Pfizer (PFE). On Wednesday, just hours after the firms dissolved the deal, Allergan announced a significant licensing pact with the U.K.’s Heptares Therapeutics for its Alzheimer’s drug portfolio.

The tale of the ill-fated Pfizer-Allergan engagement is well-known by now. An Obama administration intent on blocking tax domicile-shifting corporate inversion issued new Treasury Department rules which would have made it particularly difficult for the drugmakers’ union to pass regulatory muster. That’s thrown a wrench into a number of Wall Street and hedge funds’ plans and forced to Pfizer and Allergan to quickly map out their next moves.

Allergan and CEO Brent Saunders have apparently decided to make those moves on an accelerated schedule in an effort to bolster its clinical pipeline.

The Heptares deal is wide-ranging and could eventually be worth upwards of $3.3 billion. It includes a $125 million upfront payment from Allergan which will give the pharma giant access to certain investigational neurodegenerative disease-related compounds discovered using Heptares’ StaR tech platform. Eventually, Allergan could have to shell out another $665 million in milestone payments for clearing more tangible clinical development thresholds and $2.5 billion for downstream sales.

Allergan and Heptares hope that the investigational compounds involved in this deal will eventually lead to therapies which treat neurobehavioral and cognitive decline symptoms associated with Alzheimer’s.

While this is a swift and decisive move for Allergan in a post-Pfizer future, it’s also a bit of a risky bet given the precarious history of Alzheimer’s drug development. A number of companies including Eli Lilly (LLY) and Biogen (BIIB) have poured significant resources into Alzheimer’s and neurodegenrative disease drug development in the past year, and it’s not entirely clear those gambles will pay off.

About the Author
By Sy Mukherjee
See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Health

HealthHealth
It’s not just vaccines. Parents are refusing other routine preventive care for newborns—even protection from severe bleeding and blindness
By Laura Ungar and The Associated PressMarch 21, 2026
5 hours ago
Healthmeal delivery
The 6 Best Gluten-Free Meal Delivery Services of 2026: Nutritionist Approved
By Emily PharesMarch 20, 2026
1 day ago
Healthmeal delivery
Home Chef Meal Delivery Review (2026): Taste Tester Approved
By Christina SnyderMarch 20, 2026
1 day ago
Healthmeal delivery
The 4 Best Frozen Meal Delivery Services (2026): Personally Taste Tested
By Christina SnyderMarch 20, 2026
1 day ago
A podium with a sign reading "save healthcare" stands in front of the U.S. Capitol building.
Healthaffordability
‘Sometimes I don’t even take my medicine’: Americans are choosing between insulin and buying gas following Trump’s ACA cuts
By Ali Swenson and The Associated PressMarch 19, 2026
2 days ago
HealthDietary Supplements
The 4 Best Turmeric Supplements (2026): Expert Approved
By Emily PharesMarch 19, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.