Erika Tarasco presented an oral communication with the title “Severity of Acute Events in Patients with Hereditary Thrombotic Thrombocytopenic Purpura (hTTP) with or without Regular Plasma Prophylaxis: Results from the International Hereditary TTP Registry” and presented the poster "Follow-up Evaluation of Patients with Hereditary Thrombotic Thrombocytopenic Purpura (hTTP) from the International Hereditary TTP Registry: Incidence of Acute Disease Episodes with or without Regular Prophylactic Plasma Infusions”.