Abstract

Introduction: Subcutaneous immunoglobulin (SCIG) utilization is limited in Spain. Our aim was to describe our experience with SCIG from the diagnosis in a patient with X-linked agammaglobulinemia (XLA). Case Presentation: A recently diagnosed 6-year-old child with XLA was started on SCIG. A loading dose of 6 g, in three consecutive days (2 g/day) was prescribed. Initially, the aim was trough serum IgG over 500 mg/dL. Nevertheless, 15 months later, IgG levels fell below 500 mg/dL, and some infections occurred. A new aim of IgG over 700 mg/dLwas established, after current recommendations. Dose was increased to 3 g every 7 days. IgG levels rose over 700 mg/dL, and infections disappeared. Parental evaluation of quality of life is good. No adverse events were reported. Conclusions: SCIG is a valuable choice for treating XLA patients, even from the very beginning.

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