Pharma BD Deal Intelligence

Roche Holding AG / Tusk Therapeutics

2018 · Acquisition/Merger · $759M · Complete

CALLED IT — OFF BY 23

Lead asset flunked Phase 1 efficacy bar and the program appears quietly discontinued — a ~$0.8B bolt-on that didn't pay off

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The coverage arc

Sep 28, 2018 BioPharma Dive Bullish

Vantage's Jonathan Gardner noted Roche became the first big pharma to complete a Treg-focused oncology deal, capitalizing on a hot immuno-oncology theme to…

Sep 28, 2018 Pharmaceutical Technology Neutral

The Tusk acquisition gives Roche a differentiated Treg-depleting antibody that preserves IL-2 signaling on effector T cells, a mechanistic advantage over…

May 06, 2025 ClinicalTrials.gov Bearish

NCT04642365 (BP42595): Phase 1 study of RO7296682 (RG6292) + atezolizumab in advanced solid tumors. Overall status TERMINATED 2024-01-04; sponsor cited…

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

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Roche acquired UK-Belgian biotech Tusk Therapeutics in September 2018 for EUR 70M (~$81M) upfront plus up to EUR 585M (~$678M) in development and commercial milestones (total up to EUR 655M / ~$759M). The deal added Tusk's preclinical anti-CD25 antibody designed to deplete regulatory T cells in tumors without blocking IL-2 signaling, the first major pharma Treg-targeting oncology buyout. Roche advanced the asset (RG6292 / RO7296682 / vopikitug) into two Phase 1 studies, but both were terminated: the monotherapy study (NCT04158583) completed in July 2022 and the atezolizumab-combination study (NCT04642365) was terminated in January 2024 citing a low likelihood of achieving the targeted efficacy. Phase 1 results published in 2025 (Cancer Research Communications) concluded that RG6292 alone or with atezolizumab showed insufficient clinical efficacy to warrant further exploration, ending the program. The acquisition closed as announced; the milestone-heavy contingent value was almost certainly never realized, though Roche does not disclose milestone payments.

Did it work? Outcome assessment

Lead asset flunked Phase 1 efficacy bar and the program appears quietly discontinued — a ~$0.8B bolt-on that didn't pay off

Strategic verdict
Failed to Achieve
Pipeline outcome
Assets Terminated

Key facts

Related deals — scored

DealYearValueOutcome
Roche Holding AG / Tusk Therapeutics (this deal)2018$759M27
Roche Holding AG / Chugai Pharmaceutical Co. Ltd.2002$1.4B100
Roche Holding AG / Ventana Medical Systems Inc.2008$3.4B88
Roche Holding AG / Corange Ltd. (Boehringer Mannheim Group)1997$11.0B88
Roche Holding AG / Ventana Medical Systems Inc.2007$3.4B88
Roche Holding AG / Foundation Medicine, Inc.2015$1.1B87
Roche Holding AG / Foundation Medicine, Inc.2018$5.3B85

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