Pharma BD Deal Intelligence

Sanofi SA / ADEL, Inc.

2025 · Licensing/Option · $1.0B · Complete

Outcome grade pending — assessed 5 years post-close.

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The coverage arc

Sep 14, 2023 BioSpace Bullish

Oscotec/ADEL Announce FDA Clearance of IND Application of ADEL-Y01 for the Treatment of Alzheimer's Disease. The FDA IND clearance follows the December…

Dec 15, 2025 Fierce Biotech Bullish

Sanofi is paying $80 million upfront and pledging up to $960 million in milestones for exclusive worldwide rights to ADEL-Y01, a Phase 1 tau antibody from…

Apr 09, 2026 Seoul Economic Daily Bullish

ADEL closed ~49 billion won (~$36M) pre-IPO round, exceeding its 40B-won target ~23%, and aims to complete a KOSDAQ technology-special listing within…

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Sanofi obtained an exclusive worldwide license to ADEL-Y01, a humanized monoclonal antibody selectively targeting tau acetylated at lysine-280 (acK280) for Alzheimer's disease, plus related backup compounds. ADEL received an $80M non-refundable upfront payment and is eligible for up to $960M in development and commercial milestones (total up to $1.04B), plus tiered royalties on net sales reaching up to double-digit percentages. ADEL-Y01 is in a global Phase 1a/1b first-in-human study (healthy volunteers plus participants with mild cognitive impairment or mild Alzheimer's disease) under a U.S. FDA IND. ADEL co-developed the asset with Oscotec under a 2020 joint R&D agreement.

Key facts

Related deals — scored

DealYearValueOutcome
Sanofi SA / ADEL, Inc. (this deal)2025$1.0B
Sanofi SA / Regeneron Pharmaceuticals, Inc.2007$1.0B97
Sanofi SA / Synthelabo S.A.1998$11.0B84
Sanofi SA / Genzyme Corporation2011$20.1B84
Sanofi SA / Amunix Pharmaceuticals Inc.2021$1.2B76
Sanofi SA / Genzyme Corporation2010$18.5B75
Sanofi SA / Translate Bio Inc.2018$805M73

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