title: The Hey antigen and antibody. A second family study and the first example of an IgG anti-Hey.
abstract: A three generation family with 16 members shows that the Hey red blood cell antigen is not in the Rh, P or Kidd systems. The mother of the proband was found to have an IgG component in her anti-Hey, probably the result of alloimmunization by her two Hey-positive children. the wife of the proband who had 1 Hey-positive child, and 4 recipients of a single unit of Hey-positive blood did not have detectable anti-Hey. The presence of the IgG component of the mother's anti-Hey raises the possibility that both hemolytic disease of the newborn (HDN) and hemolytic transfusion reactions (HTR) could occur due to anti-Hey.
mesh_terms: D000328:Adult; D000368:Aged; D001789:Blood Group Antigens / Q000235:genetics* / Q000276:immunology; D001787:Blood Group Incompatibility / Q000097:blood; D004899:Erythroblastosis, Fetal / Q000097:blood; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005799:Genes, Dominant; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology*; D008297:Male; D010375:Pedigree; D011247:Pregnancy
chemical_list: D001789:Blood Group Antigens; D007074:Immunoglobulin G