Pharma BD Deal Intelligence

Novartis AG / Anthos Therapeutics

2025 · Acquisition/Merger · $3.1B · Complete

CALLED IT — OFF BY 14
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The coverage arc

Feb 11, 2025 BioSpace Neutral

Novartis bets up to $3.1 billion to buy back its own blood thinner abelacimab through the Anthos acquisition, essentially repurchasing a drug it had originally…

Sep 08, 2025 Fierce Biotech Bearish

Novartis narrows focus for anticoagulant after failure to best Eliquis in phase 3 trial. Novartis has terminated two phase 3 trials for the abelacimab antibody…

Apr 01, 2026 ClinicalTrials.gov (MAGNOLIA NCT05171075) Bearish

MAGNOLIA (abelacimab vs dalteparin, GI/GU cancer VTE): OverallStatus TERMINATED, WhyStopped 'Sponsor Decision', status verified 2026-04.

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Novartis acquired Anthos Therapeutics (a 2019 Blackstone Life Sciences / Novartis spinout) for up to $3.1B — $925M upfront plus regulatory and sales milestones — announced Feb 11, 2025 and closed Apr 3, 2025, reacquiring the Factor XI/XIa inhibitor abelacimab. Abelacimab is a once-monthly subcutaneous fully human monoclonal antibody positioned as a hemostasis-sparing anticoagulant. The lead opportunity is stroke prevention in atrial fibrillation: the Phase 3 LILAC-TIMI 76 trial (NCT05712200) remains in recruitment with completion expected Oct 2026 and a Novartis-targeted 2028 regulatory filing. The secondary cancer-associated thrombosis (CAT) program has since failed: in early 2026 Novartis terminated both Phase 3 CAT studies — ASTER (NCT05171049, vs apixaban) after a data review indicated abelacimab would not beat Eliquis, and MAGNOLIA (NCT05171075, vs dalteparin in GI/GU cancer VTE) — ending abelacimab development in CAT and narrowing the asset's value to the AF indication.

Key facts

Related deals — scored

DealYearValueOutcome
Novartis AG / Anthos Therapeutics (this deal)2025$3.1B74
Novartis AG / Advanced Accelerator Applications S.A.2017$3.9B98
Novartis AG / Endocyte, Inc.2018$2.1B96
Novartis AG / Lek Pharmaceuticals d.d.2002$876M88
Novartis AG / GlaxoSmithKline plc2014$16.0B81
Novartis AG / PTC Therapeutics Inc.2024$2.9B80
Novartis AG / Chinook Therapeutics Inc.2023$3.5B78

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