Objectives: 1. Primary: Assess the impact of cardiovascular risk factors (e.g., hypertension, diabetes) and ADAMTS13 activity on life expectancy in iTTP survivors. 2. Secondary: * Evaluate disease burden in underrepresented groups (pregnant/postpartum women, children, elderly patients). * Analyze the influence of new therapies (caplacizumab, rituximab, recombinant ADAMTS13) on care pathways. * Identify progno...

Summary: The objective of this national, prospective, multi-centre observational study is to describe the prescription rational and practice in Germany, confirm the efficacy of caplacizumab in a real-world setting, and identify predicting factors in iTTP-patients with regard to persistent autoimmune activity, therapy guidance and risk of complications. The rational is to develop new treatment algorithms th...