Hemolytic Uremic Syndrome, Atypical 1, also known as atypical hemolytic-uremic syndrome, is related to genetic atypical hemolytic-uremic syndrome and atypical hemolytic uremic syndrome with complement gene abnormality. An important gene associated with Hemolytic Uremic Syndrome, Atypical 1 is CFH (Complement Factor H), and among its related pathways/superpathways are Innate Immune System and Diseases of hemostasis. The drugs Eculizumab and Complement System Proteins have been mentioned in the context of this disorder. Affiliated tissues include kidney and skin, and related phenotypes are proteinuria and thrombocytopenia