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Australia's CSL invests $117 million for VarmX acquisition option, coagulation treatment

Published by Global Banking & Finance Review

Posted on September 16, 2025

2 min read

· Last updated: January 21, 2026

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(Reuters) -Australia's CSL said on Tuesday it will pay $117 million upfront to Dutch firm VarmX for an exclusive option to acquire the privately held company and advance the development of a blood

CSL Invests $117 Million for Exclusive Option on VarmX Acquisition

CSL's Strategic Investment in VarmX

(Reuters) -Australia's CSL said on Tuesday it will pay $117 million upfront to Dutch firm VarmX for an exclusive option to acquire the privately held company and advance the development of a blood coagulation treatment.

Details of the Acquisition Option

The deal gives CSL the right to buy VarmX after reviewing Phase 3 trial data for VMX-C001, a treatment designed to restore blood clotting in patients taking anticoagulation therapies.

Implications for Blood Coagulation Treatment

Patients take anticoagulation treatments, more commonly known as blood thinners, to prolong the time taken for blood clotting and reduce the possibility of developing serious conditions such as strokes and heart attacks.

CSL's Recent Business Restructuring

If CSL exercises its option and regulatory milestones are met, VarmX could receive up to $388 million through the treatment's commercial launch, anticipated in 2029, plus additional commercial milestones thereafter, the biotech major said in a statement.

Under the collaboration agreement, CSL will fund VarmX's Phase 3 trial evaluating VMX-C001 in patients taking Factor X inhibitors, a protein essential for blood clotting.

The partnership marks CSL's latest strategic move following a business restructuring last month that included job cuts and plans to spin off its vaccine division — moves that wiped billions off the company's market value.

(Reporting by Nikita Maria Jino in Bengaluru; Editing by Alan Barona)

Key Takeaways

  • CSL invests $117 million for an option to acquire VarmX.
  • The acquisition focuses on developing a blood coagulation treatment.
  • CSL will review Phase 3 trial data for VMX-C001.
  • Potential $388 million payout to VarmX upon commercial success.
  • CSL's investment follows recent business restructuring.

Frequently Asked Questions

What is blood coagulation?
Blood coagulation is the process by which blood changes from a liquid to a gel, forming a blood clot. This is essential for stopping bleeding and is affected by various factors, including anticoagulation therapies.
What are anticoagulation therapies?
Anticoagulation therapies are medications that help prevent blood clots from forming. They are commonly used in patients at risk of conditions like strokes and heart attacks.

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