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Introduction
Warm antibody‐mediated autoimmune hemolysis (WAIHA) is most often due to immunoglobulin G (IgG) antibodies and is detected by direct antiglobulin test (DAT). However, about 10% cases of hemolytic anemia are DAT negative. Herein, we describe a patient with DAT‐negative hemolytic anemia due to an anti‐IgA antibody. We investigate if isolated IgA can promote erythrophagocytosis.
Methods...
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