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  • Title: Facilitated Subcutaneous Immunoglobulin (fSCIg) in Autoimmune Cytopenias Associated with Common Variable Immunodeficiency.
    Author: Pedini V, Savore I, Danieli MG.
    Journal: Isr Med Assoc J; 2017 Jul; 19(7):420-423. PubMed ID: 28786256.
    Abstract:
    BACKGROUND: Common variable immunodeficiency (CVID) is the most common symptomatic primary immune deficiency of adulthood. Besides recurrent infections, autoimmune disorders-mainly cytopenias-affect 30% of patients with CVID. OBJECTIVES: To describe the efficacy and safety of facilitated subcutaneous immunoglobulin (fSCIg), which is a combination of 10% [human] SCIg with recombinant human hyaluronidase for the treatment of CVID-linked cytopenias. METHODS: We describe four women (mean age 54 years) with CVID associated with idiopathic thrombocytopenic purpura (ITP) (n=3) and autoimmune hemolytic anemia (AIHA) (n=1). Diagnosis of CVID was made according to the European Society of Immune Deficiencies / Pan-American Group for Immune Deficiency criteria. All were treated with fSCIg (bi-monthly, 20 g). RESULTS: After a median follow-up of 22 months, all patients achieved a stable remission from the cytopenias, characterized by increased platelet values in ITP (mean values 93000/mmc), and resolution of anemia. A reduction of the daily prednisone dose was documented in the patient with AIHA. No systemic adverse drug reactions were observed. CONCLUSIONS: Our preliminary data documented the efficacy and safety of fSCIg in the treatment of CVID associated with autoimmune cytopenias, with a good tolerability. We also noted the role of fSCIg as a steroid sparing agent. It is thus possible to suppose an immunomodulatory role for fSCIg, but linked to different mechanisms than IVIg, due to the peculiar pharmacokinetic and administration route of fSCIg.
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