2009•Acta HaematologicaRequires access
Anti-IgA Antibodies in Two Brothers with Selective Serum IgA Deficiency
Federica Invernizzi, G. Balestrieri, Giuseppe Consogno, Piersandro Riboldi, Anǵela Tincani
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Abstract
A selective serum IgA deficiency with anti-IgA antibodies at high titer were found in a patient who suffered severe transfusion reactions. The same abnormalities were detected in his brother, a 72-year-old-man in good general condition. Anti-IgA antibodies were found in the IgG fraction and were directed against alpha-chains. A deficiency of isoagglutinins and an absence of heteroagglutinins in the propositus' serum could be shown.