Sirius Therapeutics Announces Promising Phase I Clinical Data from Its Factor XI siRNA, a Long-Acting Next-Generation Anticoagulant for Thromboembolic Disorders
10.12.2024 05:00:00 CET | Business Wire | Press release
Data presented at American Society of Hematology annual meeting
Sirius Therapeutics today announced promising preliminary data from its Phase 1 first-in-human clinical trial of SRSD107, a next generation siRNA therapeutics under clinical development for the prevention and treatment of thromboembolic disorders, such as myocardial infarction, ischemic stroke, and venous thromboembolism. The trial data were presented during a poster session at the 66th American Society of Hematology (ASH) Annual Meeting and Exposition, held in San Diego, CA.
SRSD107 is designed to inhibit Factor XI (FXI), a protein in the coagulation pathway that has shown potential to reduce thrombosis without significantly increasing the risk of bleeding, a major liability of current drugs.
“In this trial, SRSD107 was safe and well tolerated, with pharmacokinetic parameters consistent with a typical siRNA product,” said Dr. Patrick Yue, Sirius’ Chief Medical Officer. “We are encouraged by the marked, prolonged reduction in FXI antigen and activity, and increase in clotting, or thromboplastin time, that are consistent potent anticoagulation over sustained periods and reduced bleeding risk respectively. The trial provides a strong foundation for Phase 2 clinical studies.”
Dr. Qunsheng Ji, Sirius’ Chief Executive Officer added that “presentation of these findings at ASH 2024 underscores Sirius Therapeutics' commitment to advancing innovative treatments for thromboembolic disorders.”
The study was a single-site, randomized double-blind, placebo controlled study to evaluate the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of subcutaneously administered SRSD107 in 40 healthy subjects. Five cohorts, each consisting of eight subjects evaluated eight doses of SRSD107, each receiving either a single SRSD107 dose or placebo. In the trial, SRSD107 was safe and well-tolerated. Significant changes from baseline in PD biomarkers were observed, with maximal reductions in FXI antigen and activity > 90% and an aPTT (thromboplastin time) increase of > 100% (i.e., an aPTT ratio > 2.0) at the highest doses tested. The pharmacodynamic effects were durable, with FXI antigen and activity levels remaining suppressed for more than 16 weeks after dosing.
The study is titled, “A Phase 1, Single Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneously Administered SRSD107 in Healthy Subjects. For more information on the study and our ongoing clinical trials, please visit Sirius Therapeutics' website (www.siriusrna.com) or here.
About Thromboembolic Disorders
Thrombosis, or blood clot formation, is the common underlying mechanism of most cases of myocardial infarction, ischemic stroke, and venous thromboembolism. According to a study in The Lancet of regional and global mortality rates, thromboembolic disorders are estimated to cause as many as 1 in 4 deaths worldwide.
About SRSD107
SRSD107 is a novel double-stranded small interfering ribonucleic acid (siRNA). Developed by Sirius Therapeutics, SRSD107 specifically targets human coagulation factor XI (FXI) mRNA and inhibits FXI protein expression, thereby blocking the intrinsic coagulation pathway and promoting anticoagulant/anti-thrombotic effects. SRSD107 has been engineered for the potential to enable once or twice-a-year dosing.
About Sirius Therapeutics
Sirius is an innovative, clinical stage biotech company developing next generation siRNA therapy for global markets. We are dedicated to translating siRNA technology into transformative medicine for patients with chronic diseases. Our most advanced products are SRSD107 for the treatment of thromboembolic disorders, and SRSD101 for the treatment of dyslipidemia. Founded in 2021 by a world-class leadership team and investors, Sirius has established an innovative discovery center in the United States and translational medicine center in China. Sirius has raised nearly US$100 million funding to date from OrbiMed, Creacion Ventures, Hankang Capital, Delos Capital, and the leadership team.
View source version on businesswire.com: https://www.businesswire.com/news/home/20241209815845/en/
Subscribe to releases from Business Wire
Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from Business Wire
Traxys Group Completes Acquisition of Carbomax AB Through the Purchase of 100% of Comax22.4.2026 12:01:00 CEST | Press release
Traxys S.à.r.l., a global trader and merchant in the metals and natural resources sectors, is pleased to announce that the previously announced acquisition of Comax2 AB - the holding company of Carbomax AB - from Investment Aktiebolaget Spiltan and the other shareholders of Comax2 AB has successfully closed. Traxys Group has now acquired 100% of the interests in Comax2 AB, making Carbomax AB a wholly owned subsidiary of Traxys Group. All required Swedish regulatory clearances including foreign direct investment and antitrust approvals have been obtained allowing the parties to finalize the transaction. Carbomax AB is a leading Swedish trading house and industrial operator specializing in ferroalloys, carbon products and briquettes. Through this acquisition, Traxys strengthens its presence in the Scandinavian market and reinforces its commitment to advancing sustainable steel production in the region. The combination of Traxys and Carbomax creates significant commercial, operational and
Reply Signs Strategic Collaboration Agreement with AWS to Accelerate AI-Driven Cloud Transformation2.4.2026 10:00:00 CEST | Press release
Reply [EXM, STAR: REY] announced today that it has signed a strategic collaboration agreement (SCA) with Amazon Web Services (AWS) to accelerate the adoption of cloud and artificial intelligence solutions across key international markets. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260402597802/en/ This strategic collaboration agreement further reinforces Reply’s commitment to enable organizations across industries to harness the full potential of cloud and artificial intelligence technologies. At the core of the SCA is a strong focus on Artificial Intelligence and Generative AI. Leveraging the deep expertise of its specialized companies - Comsysto Reply, Data Reply, Sense Reply, and Storm Reply - Reply supports organizations in designing and deploying enterprise-grade GenAI solutions, including agentic AI systems for autonomous workflows, domain-specialized models for vertical industries, and governance frameworks aligne
Bending Spoons renews tech scholarship for women with €100,000 commitment2.4.2026 09:11:00 CEST | Press release
Bending Spoons today opened applications for the 2026 edition of its Women in Computer Science Scholarship. The program offers twenty scholarships, each worth €5,000, to university students pursuing technology degrees across Europe and the United Kingdom. This year’s recipients will also be invited to a two-day networking event in Milan in October, fully covered by the company. The initiative is part of a broader set of programs Bending Spoons runs to recognize and support the next generation of technology talent, including merit-based scholarships, networking events, and student competitions. "The students of computer science today will define what the field looks like in the years ahead," said Eva Milenkovska, talent manager at Bending Spoons and lead of the scholarship initiative. "This scholarship is about recognizing the women who are pushing themselves to excel and to help shape the future of the industry." This is the fourth time Bending Spoons has offered this specific scholars
SecurityTech on the Rise: G+D Reports Strong Order Intake and High Resilience in 20252.4.2026 08:30:00 CEST | Press release
In fiscal year 2025, Giesecke+Devrient (G+D) reaffirmed its position as global leader in SecurityTech for mission-critical infrastructure. In a market where security is becoming essential for technological and societal stability, G+D demonstrates strong growth prospects. In 2025, G+D achieved a record order intake of €3.6 billion (+8%). Revenue increased to €3.2 billion (+1%), although exchange rate effects dampened growth. The key figures underscore the company's strong operational performance and profitability: Adjusted EBIT reached a new high of €211 million. The substantial free cash flow of €119 million provides additional leeway for future investments. With its equally strong segments – Digital Security, Financial Platforms and Currency Technology – G+D boasts a resilient portfolio that effectively cushions market volatility. The company's success reflects this strategic strength, combining technological depth, a global presence and operational reliability. G+D is making targeted
Bona Releases 2025 Sustainability Report2.4.2026 08:05:00 CEST | Press release
Bona®, a global, family-owned company that supplies products for installing, renovating, maintaining, and restoring premium floors, has published its 2025 Sustainability Report. The report outlines progress across Bona’s three sustainability pillars – Respect our Planet, Care for People, and Trusted Business – and highlights the continued integration of sustainability into all aspects of its operations. “Our business is built on extending the life of existing flooring materials and reducing the need for replacement,” says Lidija Broström, Interim Chief Executive Officer at Bona. “At Bona, we are making steady progress in reducing our impact while building a stronger foundation for the future. By working closely with our partners, we aim to drive meaningful change across our value chain and contribute to a more sustainable future.” In 2025, Bona reduced total Scope 1 and 2 greenhouse gas emissions (market-based) by 46% compared to its 2022 baseline, reaching 1,338 tonnes of CO₂—surpassi
In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.
Visit our pressroom