title: Chronic lymphocytic leukemia and other chronic lymphoid proliferations: surface marker phenotypes and clinical correlations.
abstract: A diagnosis of chronic lymphocytic leukemia (CLL) was made in 81 patients referred for peripheral blood lymphocyte typing (PBL). A retrospective review was undertaken to see if correlations existed between surface marker phenotype-determined subclasses and clinical features. Surface markers utilized were surface immunoglobulin (sIg), sheep erythrocyte receptor (E), 65,000-dalton human T lymphocyte antigen (T65), Ia antigen, and for sIg+ cells, heavy and light chains. All patients were Ia+. Cells of 70% of patients were sIg+ E- T65+ Ia+, and the clinical heterogeneity was that of classical CLL. Eight of the nine patients with sIg+ E- T65- Ia+ cells had a paraprotein. The sIg- E+ T65+ Ia+ phenotype represented classical T cell CLL. Three of the five patients in the sEg- E- T65+ Ia+ group had significant albuminuria, and two had nephrotic-range proteinuria. Use of additional monoclonal antibodies to B cell surface antigens should further subclassify CLL and other lymphoproliferative disorders. Interesting clinical correlations with certain phenotypic subclasses do exist, and further subclassification and long-term follow-up may yield correlations between phenotypes and prognosis.
mesh_terms: D000936:Antigen-Antibody Complex / Q000032:analysis; D000951:Antigens, Neoplasm / Q000032:analysis*; D000954:Antigens, Surface / Q000032:analysis*; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005500:Follow-Up Studies; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D007943:Leukemia, Hairy Cell / Q000276:immunology / Q000628:therapy; D007945:Leukemia, Lymphoid / Q000276:immunology* / Q000628:therapy; D008228:Lymphoma, Non-Hodgkin / Q000276:immunology / Q000628:therapy; D008297:Male; D010641:Phenotype; D011379:Prognosis; D012189:Retrospective Studies; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000936:Antigen-Antibody Complex; D000951:Antigens, Neoplasm; D000954:Antigens, Surface; D000949:Histocompatibility Antigens Class II; D007136:Immunoglobulins