Utilization of intravenous or subcutaneous immunoglobulins in secondary immune deficiency (ULTIMATE): A retrospective multicenter study.

Introduction: We conducted a retrospective multicenter cohort study of patients receiving Immunoglobulin replacement therapy (IgRT) for secondary immune deficiency (SID) during 2012.

Methods: Data were retrospectively collected from the first dose of Ig administered in 2012 to 1 year afterward in terms of the indication for IgRT, as well as efficacy and safety.

Results: In total, 16 hospitals participated in the study, and 368 patients were included.