TTP is considered a true medical emergency. There are two TTP categories - acquired (idiopathic) and congenital (familial) types and affects only 4-6 people per million people, women more than men, with a peak incidence in the forties.

Funding enables UCLH to provide TTP patients aspects of care that are above and beyond NHS provision. This includes a whole host of activities and network events for those affected by TTP. It also supports long-term research into the disease by regularly financing lab equipment and clinical studies.