Pharma BD Deal Intelligence

Sanofi SA / Dren Bio, Inc.

2025 · Asset Purchase · $1.9B · Complete

Outcome grade pending — assessed 5 years post-close.

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The coverage arc

Mar 20, 2025 BioPharma Dive Bullish

The acquisition positions Sanofi alongside Lilly, Bristol Myers Squibb, and AbbVie in pursuing next-generation B-cell depletion for autoimmune diseases.…

Mar 20, 2025 MedCity News Bullish

Sanofi is building on its immunology ambitions by acquiring an early clinical Dren Bio drug candidate that offers a potential first-in-class approach to…

Dec 15, 2025 Fierce Biotech Bullish

Pfizer, Sanofi pull out checkbooks for separate year-end autoimmune pacts. The Fierce Biotech article references Sanofi's earlier Dren Bio acquisition as the…

Source summaries from our enrichment pipeline; follow links for originals.

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Sanofi agreed to acquire Dren Bio's DR-0201, a targeted bispecific myeloid cell engager for deep B-cell depletion, for $600M upfront plus $1.3B in milestones. Broadens Sanofi's immunology pipeline; DR-0201 is in Phase 1 for autoimmune diseases. Completed May 27, 2025.

Key facts

Related deals — scored

DealYearValueOutcome
Sanofi SA / Dren Bio, Inc. (this deal)2025$1.9B
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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