title: [The HLA system and habitual abortion].
abstract: HLA-antigens are extremely polymorphic. A calculation of the polymorphism shows a number of 398.476.343 possible HLA-phenotypes, if HLA-A, -B, -C and -DR antigens are taken into account. The compatibility of HLA-antigens of recipient and donor plays a crucial role in transplantation: HLA-antigens are the traits, which are recognized by the immune system of the recipient in the frame of a rejection of the transplant or by the donor in the frame of a graft-versus-host reaction. Large international statistics show that HLA-incompatibility between recipient and donor leads to short transplant function periods, while compatibility brings about good transplant function. Therefore, matching of HLA-antigens plays an important role in transplantation of solid organs, mainly kidneys (3, 4, 5), and is completely necessary in bone marrow transplantation. Also in pregnancy, HLA-antigens are important: If HLA compatibility between mother and child is high, the risk for habitual abortion is higher than in normal pregnancies (6, 7).
authors.affiliation: Institut für Blutgruppenserologie, Universität Wien.
authors.forename: A
authors.initials: A
authors.lastname: Hajek-Rosenmayr
mesh_terms: D000026:Abortion, Habitual / Q000235:genetics / Q000276:immunology*; D005260:Female; D006680:HLA Antigens / Q000235:genetics / Q000276:immunology*; D006801:Humans; D007108:Immune Tolerance / Q000235:genetics / Q000276:immunology; D011110:Polymorphism, Genetic / Q000235:genetics; D011247:Pregnancy
chemical_list: D006680:HLA Antigens
vernacular_title: HLA-System und habitueller Abort.