A global network focused on TTP research and clinical science.
IWG TTP is a nonprofit international scientific and clinical collaboration dedicated to advancing research, education, and guidance in TTP and related thrombotic microangiopathies.
Our mission
Connecting expertise across countries and disciplines.
IWG TTP exists to facilitate global collaboration, promote the exchange of expertise and data, and address high-priority scientific and clinical challenges in TTP and related TMAs.
Its structure is intentionally streamlined: a governing Board, members, scientific or advisory expertise as needed, and ad hoc working groups or project teams built around specific questions.
How we work
A streamlined structure for collaborative work.
Inclusive participation
IWG TTP encourages broad participation while preserving clear standards for official projects, outputs, and use of the organization’s name.
Investigator-led projects
Participating members may propose projects. Approved projects are led by investigators designated through the Board’s project process.
Scientific independence
Funding sources do not control or direct IWG TTP scientific decisions, outputs, or recommendations.
A formal foundation
Formalized in 2026.
In July 2026, IWG TTP adopted formal bylaws defining its mission, governance, membership model, project process, data and publication principles, scientific independence, collaborations, and meeting structure. The organization is designed to remain adaptable as the field and international community grow.