SUMMARY
GAMMAGARD S/D, Immune Globulin Intravenous (Human) [IGIV] is a solvent/detergent treated, sterile, freeze-dried preparation of highly purified immunoglobulin G (IgG) derived from large pools of human plasma. The product is manufactured by the Cohn-Oncley cold ethanol fractionation process followed by ultrafiltration and ion exchange chromatography. Source material for fractionation may be obtained from another U.S. licensed manufacturer. The manufacturing process includes treatment with an organic solvent/detergent mixture,1,2 composed of tri-n-butyl phosphate, octoxynol 9 and polysorbate 80.3 The GAMMAGARD S/D manufacturing process provides a significant viral reduction in
in vitro
studies.3 These studies, summarized in Table 1, demonstrate virus clearance during GAMMAGARD S/D manufacturing using infectious human immunodeficiency virus, Types 1 and 2 (HIV-1, HIV-2); bovine viral diarrhea virus (BVD), a model virus for hepatitis C virus; sindbis virus (SIN), a model virus for lipid-enveloped viruses; pseudorabies virus (PRV), a model virus for lipid-enveloped DNA viruses such as herpes; vesicular stomatitis virus (VSV), a model virus for lipid-enveloped RNA viruses; hepatitis A virus (HAV) and encephalomyocarditis virus (EMC), a model virus for non-lipid enveloped RNA viruses; and porcine parvovirus (PPV), a model virus for non-lipid enveloped DNA viruses.3 These reductions are achieved through a combination of process chemistry, partitioning and/or inactivation during cold ethanol fractionation and the solvent/detergent treatment.3
GAMMAGARD S/D is not indicated in patients with selective IgA deficiency where the IgA deficiency is the only abnormality of concern (see WARNINGS section).
GAMMAGARD S/D is indicated for the treatment of primary immunodeficient states, such as: congenital agammaglobulinemia, common variable immunodeficiency, Wiskott-Aldrich syndrome, and severe combined immuno-deficiencies.6,7 This indication was supported by a clinical trial of 17 patients with primary immunodeficiency who received a total of 341 infusions. GAMMAGARD S/D is especially useful when high levels or rapid elevation of circulating IgG are desired or when intramuscular injections are contraindicated (e.g., small muscle mass).
GAMMAGARD S/D is indicated for prevention of bacterial infections in patients with hypogammaglobulinemia and/or recurrent bacterial infections associated with B-cell Chronic Lymphocytic Leukemia (CLL). In a study of 81 patients, 41 of whom were treated with GAMMAGARD, Immune Globulin Intravenous (Human), bacterial infections were significantly reduced in the treatment group.8,9 In this study, the placebo group had approximately twice as many bacterial infections as the IGIV group. The median time to first bacterial infection for the IGIV group was greater than 365 days. By contrast, the time to first bacterial infection in the placebo group was 192 days. The number of viral and fungal infections, which were for the most part minor, was not statistically different between the two groups.
When a rapid rise in platelet count is needed to prevent and/or to control bleeding in a patient with Idiopathic Thrombocytopenic Purpura, the administration of GAMMAGARD S/D, should be considered.
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