_:vb50949468 "A dysgammaglobulinemia that is characterized by isolated deficiency of an IgG subclass, normal total IgG levels, and subsequent increased susceptibility to recurrent infections, atopic disease, and autoimmune conditions."^^ . _:vb50949468 . _:vb50949468 . _:vb50949468 . _:vb50949468 . _:vb50949468 . _:vb50949468 "url:https://www.ncbi.nlm.nih.gov/pubmed/26846287"^^ .