JAMA CME review of Immune Thrombotic Thrombocytopenic Purpura (iTTP) - thrombotic microangiopathy w/ hemolytic anemia (MAHA) & thrombocytopenia. iTTP incidence is 2-6 per million. Caused by Abs to ADAMTS13), w/ low ADAMTS13 activity vWF multimers bind platelets https://t.co/kwKXUciBd1