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Underlying primary immunodeficiency (PID) in autoimmune cytopenia: early diagnosis can alter the treatment pathway. AIHA, autoimmune hemolytic anemia; ALPS, autoimmune lymphoproliferative syndrome; CVID, common variable immune deficiency; HD, high dose; Hgb, hemoglobin; IEI, inborn error of metabolism (=primary immunodeficiency); ITP, immune thrombocytopenia; IVIg, intravenous immunoglobulin; RTX, rituximab.
