title: Association of certain Ia allotypes with the occurrence of chronic lymphocytic leukemia. Recognition by a monoclonal anti-Ia reagent of a susceptibility determinant not in the DR series.
abstract: The Ia antigen allospecificities of individuals with B type chronic lymphocytic leukemia differed significantly from those of a control population. A monoclonal antibody, IVD12, directed to a MB3-1ike determinant, reacted with 92.5 percent of the individuals with leukemia and yielded the greatest positive relative risk, 13.5. A lower degree of positive association was found with the presence of the MT2 determinant. In contrast, the low observed frequency of the MT1/MB1 determinant among leukemic individuals was associated with the most significant negative relative risk, -8.1. Among HLA- DR specificities, the relative risk associated with the presence of DR5 was positive while that with DR2 was negative.
mesh_terms: D000328:Adult; D000911:Antibodies, Monoclonal / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D004198:Disease Susceptibility; D000939:Epitopes / Q000235:genetics / Q000276:immunology; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D006801:Humans; D007945:Leukemia, Lymphoid / Q000235:genetics / Q000276:immunology*; D008875:Middle Aged; D010641:Phenotype
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II