International Society on Thrombosis and Haemostasis (ISTH)

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International Society on Thrombosis and Haemostasis (ISTH) ISTH is an international individual membership organization with over 7,000 members in more than 110 countries.

The International Society on Thrombosis and Haemostasis (ISTH) is the global community of dedicated scientists and physicians specializing in bleeding and clotting disorders. We are dedicated to transformative scientific discoveries and clinical practices, the development of young professionals and the education of physicians, scientists and allied health professionals wherever they may live. What inspires us, drives us and connects us is the translation of science to clinical practice that will improve the lives of millions of patients worldwide. We initiate and promote education and outreach initiatives, research activities, scientific meetings, peer-reviewed publications, expert committees and the development of standards allowing a common language and approach to basic and clinical science all over the world. Join us and become part of our professional network of clinicians, researchers and educators from around the world exchanging ideas, insights and information in our quest to improve patients’ lives. The ISTH operates the Journal of Thrombosis and Haemostasis (JTH), Research and Practice in Thrombosis and Haemostasis (RPTH), the annual World Thrombosis Day campaign and supports the European Thrombosis and Haemostasis Alliance (ETHA).

Heavy menstrual bleeding is more than a quality-of-life issue, it can also be an important sign of an underlying bleedin...
10/20/2026

Heavy menstrual bleeding is more than a quality-of-life issue, it can also be an important sign of an underlying bleeding disorder.

A new study examined platelet function testing in 411 adolescents and young adults with unexplained heavy menstrual bleeding, finding that 10% were ultimately diagnosed with a qualitative platelet disorder (QPD), a lower prevalence than previously reported.

The findings also highlight an important diagnostic consideration: among patients who underwent repeat platelet function testing, many initially abnormal results normalized, reinforcing the importance of confirming abnormal findings before diagnosing a QPD. The study also identified differences in access to testing, with Black individuals experiencing a longer median time from their first bleeding disorders clinic visit to platelet function testing than White individuals.

For adolescent and young adult women and others who menstruate, improving the recognition and evaluation of heavy menstrual bleeding is an important part of advancing equitable, evidence-based care.

Learn more here: https://www.rpthjournal.org/article/S2475-0379(26)03628-9/fulltext

10/20/2026

The International Society on Thrombosis and Haemostasis (ISTH) sends its best wishes to Philadelphia Eagles quarterback Jalen Hurts in the United States for a full and speedy recovery.

His situation is a reminder that blood clots can affect anyone, including young, fit athletes. Education and awareness are essential to recognizing the signs, understanding risk factors and seeking timely medical care.

In recognition of World Thrombosis Day on October 13, the ISTH continues to emphasize a message that matters every day: knowing the risks and recognizing the symptoms of blood clots can save lives.

World Thrombosis Day may be one day on the calendar, but our commitment to education, awareness and prevention continues year-round, around the world.

The ISTH is thrilled to welcome new team members to strengthen global partnerships and business development! Tamara Al-H...
10/20/2026

The ISTH is thrilled to welcome new team members to strengthen global partnerships and business development!

Tamara Al-Hakim, M.D., join us as the Director of Strategic Partnerships and Business Development. She will lead the ISTH Strategic Partnerships and Business Development team, drawing on more than a decade of experience building strategic partnerships, expanding industry relationships and developing revenue opportunities for scientific and medical membership organizations.

Devi Seal will serve as an integral member of the Strategic Partnerships and Business Development team, where she will leverage her expertise in building lasting relationships with corporate partners, developing fundraising strategies and securing grants and sponsorships to support consensus workshops, conferences, advocacy events, and educational campaigns for clinicians and patients.

Both new team members joined the ISTH in October 2026, bringing extensive experience in strategic partnerships, industry relations, fundraising and medical education to support the Society’s mission and continued global growth.

Join us in welcoming our newest members of the team and learn more about them here: https://www.isth.org/news/737222/ISTH-welcomes-new-team-members-to-strengthen-global-partnerships-and-business-development.htm

Have research ready to share with the global thrombosis and hemostasis community? Abstract submissions for ISTH 2027 in ...
10/19/2026

Have research ready to share with the global thrombosis and hemostasis community? Abstract submissions for ISTH 2027 in Vancouver open soon.

From foundational science and emerging technologies to clinical research, women’s health, pediatric care, anticoagulation, VTE and bleeding disorders, the Congress abstract program reflects the breadth of research shaping the field.

Start preparing now and review the submission guidelines before the portal opens on November 23, 2026.

⏳ Abstract deadline: January 11, 2027

Learn more: https://www.isthcongress.org/abstracts

ISTH members: Access on-demand SSC session recordings from the ISTH 2026 Congress through the ISTH Academy.🎥 Purchase ac...
10/17/2026

ISTH members: Access on-demand SSC session recordings from the ISTH 2026 Congress through the ISTH Academy.

🎥 Purchase access and start watching: https://www.isthcongress.org/on-demand

Thrombosis and hemostasis in children and newborns present unique clinical challenges that require age-specific approach...
10/16/2026

Thrombosis and hemostasis in children and newborns present unique clinical challenges that require age-specific approaches to diagnosis and management.

How can clinicians navigate these complexities to make informed decisions in pediatric and neonatal care? Join the upcoming SSC on the Case: Subcommittee on Pediatric and Neonatal Thrombosis and Hemostasis webinar for a case-based discussion exploring clinical considerations in this specialized field.

Hear from speakers Dr. Jillian Simoneau and Dr. Georgina Santiapillai, with moderators Dr. Assaf Barg, Dr. Hilary Whitworth and Dr. Ayesha Zia guiding the discussion.

📅 November 2, 2026
🕓 16:00–17:00 UTC
🔗 Register now: https://bit.ly/4y9Hpo6

Who is represented in our research, and how does that shape what we learn? Inclusive study design is an important part o...
10/16/2026

Who is represented in our research, and how does that shape what we learn? Inclusive study design is an important part of producing research that reflects the populations and communities it aims to understand. From participant selection to experimental design, decisions made throughout the research process can influence the relevance and applicability of scientific findings.

Join the upcoming ISTH Career Development Webinar, “Inclusivity and How to Design and Conduct Inclusive and Representative Studies or Experiments,” to explore how researchers can integrate inclusivity and representation into their work.

Whether you're designing your first study or refining your research approach, this session offers an opportunity to consider how thoughtful research practices can strengthen scientific inquiry.

🔗 Learn more and register: https://bit.ly/4AYeSoj This webinar is supported by Werfen.

Could you be the next Editor-in-Chief of RPTH? ISTH is seeking a new Editor-in-Chief for Research and Practice in Thromb...
10/15/2026

Could you be the next Editor-in-Chief of RPTH?

ISTH is seeking a new Editor-in-Chief for Research and Practice in Thrombosis and Haemostasis (RPTH).

This is an opportunity to shape the next chapter of the ISTH's open access journal and help define its scientific vision, editorial identity, global reach and approach to sharing and communicating research.

We're looking for an accomplished scientific and editorial leader with a strong publication record, journal experience and a vision for the future of RPTH.

📅 Applications due: December 17, 2026

Apply now or share this opportunity with your colleagues.

Learn more and apply: https://www.isth.org/page/RPTHSearch

Behind every strong scientific career is often someone who asked the right question, opened the right door or helped a y...
10/15/2026

Behind every strong scientific career is often someone who asked the right question, opened the right door or helped a young investigator see what was possible.

There is still time to nominate an outstanding mentor for the 2027 ISTH Outstanding Mentor Awards.

These awards recognize individuals whose sustained mentorship of early career professionals has contributed not only to the growth of their mentees, but also to the advancement of research and clinical practice in thrombosis and hemostasis.

Think about the mentor who helped sharpen your science, build your confidence or shape your career and consider recognizing them.

🏆 Learn more and nominate: www.isth.org/news/news.asp?id=736357

Why Vancouver for ? Vancouver is a global hub for innovation and life sciences, much like the ISTH. It's a spectacular ...
10/14/2026

Why Vancouver for ? Vancouver is a global hub for innovation and life sciences, much like the ISTH. It's a spectacular setting surrounded by mountains and water. World-class infrastructure. And a vibrant, multicultural city with plenty to discover beyond the Congress.

Vancouver offers the perfect backdrop for the global thrombosis and hemostasis community to come together, exchange ideas, build connections and explore the latest advances shaping the field.

Between Congress sessions, take time to experience everything the city has to offer from its waterfront and neighborhoods to its food, culture and unforgettable views.

The next chapter of the ISTH Congress is headed to Vancouver, and we hope you’ll be part of it.

Come for the science. Stay for everything else.

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