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SSC: Factor VIII, Factor IX & Rare Coagulation Disorder
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Factor VIII, Factor IX and Rare Coagulation Disorders

If you are interested in the subcommittee and want to follow its activity, please click "join group" above to sign up as a member (follower). 


  • To address issues of practical importance to the research community in the field.
  • To evaluate existing data, determine issues for which data is missing or deficient, identify areas of controversy or pressing clinical need and discuss methodologic approaches to answer questions raised.
  • To create international collaborations for the purpose of planning and executing projects related to the defined needs in the field.
  • To suggest or organize collaborative studies as a result of these activities.
  • To generate, publish and distribute reports, recommendations and other documents concerning the above.
  • To develop laboratory standards, methods, and nomenclature if appropriate.


The subcommittee appoints experts into project groups with specific mandates:

  • To evaluate and standardize definition of clinical and laboratory criteria to assess the clinical severity and effectiveness of therapy
  • Standardization of the currently recommended methodologies for standard coagulation assays, global hemostasis tests and genetic analysis to assess their application in different conditions
  • To evaluate current and upcoming treatment products to prepare recommendations on their best clinical use and to foster the development of more effective products.
  • To provide recommendations for optimal and practical pre- and post- licensure clinical trial design for the new clotting factor concentrates.

Such groups work over 1-2 years, review the available information in the literature and in practice and prepare recommendations to be published as SSC communication. See specific form of each project.

If you are a member of the Society and would like to know how to participate in the work of this group, please join the group to receive updates on activity or submit an Expression of Interest Form to the Chairman or any of the Co-Chairmen. We would be pleased to learn of your interest.



Official Communication

Recent Forum Activity
Request for Proposals: WFH World Bleeding Disorders Registry
Posted by: Lacey Schmeidler, Wednesday, January 18, 2017
Forum: General Discussion
2016 Annual Minutes
Posted by: Guy Young, Wednesday, June 8, 2016
Forum: Annual Minutes
SSC 2016 Montpellier Program
Posted by: Guy Young, Monday, September 28, 2015
Forum: General Discussion
Comments requested: Safety Evaluation Study Design
Posted by: Flora Peyvandi, Tuesday, July 21, 2015
Forum: General Discussion
Comments requested: prophylaxis in boys with severe hemophilia
Posted by: Lacey Schmeidler, Monday, July 20, 2015
Forum: General Discussion
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Related Group News

ISTH Awards the Robert P. Grant Medal to J. Evan Sadler
Posted in ISTH News, Monday, November 26, 2018

The International Society on Thrombosis and Haemostasis (ISTH) has awarded the Robert P. Grant Medal, the highest honor of the Society, to J. Evan Sadler, ... more »

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Johnny N. Mahlangu
Peter Collins
Alfonso Iorio
Gili Kenet
Maria Elisa Mancuso
Savita Rangarajan
Guy Young


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