Abstract

Although severe reactions to immunoglobulin preparations have been frequently reported, IgE antibodies against IgA are usually not investigated; and occur predominantly in previously sensitized patients. The purpose is to report anaphylaxis to IGIV during initial infusion in a patient with common variable immunodeficiency with absent IgA without prior sensitization and in the absence of detectable IgG anti-IgA antibodies, and positive skin tests for immediate hypersensitivity to four different preparations of IGIV, one subcutaneous immunoglobulin preparation, and to purified IgA. Patient was treated without side effects with IGIV preparation depleted of IgA to which immediate hypersensitivity skin test was negative.This case demonstrates that patients with CVID with no IgA and without prior exposure to immunoglobulin or plasma may develop anaphylaxis following initial infusion of IGIV, which appears to be due to IgE anti-IgA, and independent of IgG anti-IgA antibodies. Since there is no good correlation between anaphylaxis/anaphylactic reactions and IgG anti-IgA antibodies, and IgE anti-IgA antibody test is commercially unavailable, we suggest that the patients with CVID with absence of IgA might be skin tested for immediate hypersensitivity prior to initiation of immunoglobulin administration. However, such recommendation may require studies on a large number of patients with CVID with no detectable IgA.

Highlights

  • Common variable immunodeficiency (CVID) is a heterogeneous disorder characterized by decreased levels of at least two immunoglobulin isotypes, including IgG and impaired specific antibody response [1]

  • We report a patient with common variable immunodeficiency (CVID) with no detectable IgA and naïve to immunoglobulin therapy, who developed what appears to be IgE anti-IgA antibody mediated, and IgG anti-IgA independent anaphylaxis during initial 5 min of first IGIV infusion

  • Patient was skin tested for immediate hypersensitivity with four different IGIV preparations and one immunoglobulin subcutaneous preparation (IGSC)

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Summary

Introduction

Common variable immunodeficiency (CVID) is a heterogeneous disorder characterized by decreased levels of at least two immunoglobulin isotypes, including IgG and impaired specific antibody response [1]. Anaphylactic/ anaphylactic reactions to blood and plasma transfusion have been reported in subjects with IgG anti-IgA antibodies [2, 3]. Patients develop systemic sensitivity to intravenous immunoglobulin (IGIV) treatment, including anaphylaxis/anaphylactic reactions, which may be associated with IgG-anti-IgA antibodies and often associated with prior exposure to immunoglobulin therapy [4, 5]. Patients with hypogammaglobulinemia and IgG anti-IgA antibodies have tolerated immunoglobulin therapy without any reaction [6]. There is a lack of correlation between IgG anti-IgA antibodies and anaphylactic/anaphylaxis reaction [4, 7]. A few cases have been reported in whom IgE-mediated anaphylaxis developed following

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