title: The "polyclonal hyperimmunoglobulin G1(A1) syndrome" is a secondary phenomenon due to autoimmune disease.
authors.forename: M J
authors.initials: MJ
authors.lastname: Krol-van Straaten
authors.forename: H C
authors.initials: HC
authors.lastname: Haanen
authors.forename: C E
authors.initials: CE
authors.lastname: de Maat
mesh_terms: D001327:Autoimmune Diseases / Q000150:complications* / Q000235:genetics; D006801:Humans; D006942:Hypergammaglobulinemia / Q000209:etiology* / Q000235:genetics; D007074:Immunoglobulin G / Q000032:analysis*; D013577:Syndrome
chemical_list: D007074:Immunoglobulin G