Long Term Follow Up of Hereditary Thrombotic Thrombocytopenic Purpura on Plasma Therapy for 9 Years: A Case Report

ABSTRACT A 7.6‐year‐old boy with hTTP had fever‐induced hemorrhagic rash, MAHA, cerebral infarction, and renal impairment. After plasma therapy, symptoms were partially relieved; 9‐year follow‐up showed regular plasma transfusion was needed, with CKD Stage 3. Early genetic diagnosis is crucial; plasma therapy prevents recurrence, and gene therapy offers new hope for hTTP.