title: Application of a T cell receptor antibody beta F1 for immunophenotypic analysis of malignant lymphomas.
abstract: One hundred sixty-five non-Hodgkin's lymphomas (101 B, 63 T, one histiocytic) were immunostained with an antibody (beta F1) reactive with a common framework determinant on the beta-subunit of the T cell receptor (TCR). beta F1 stained T lymphomas exclusively, including 53% of peripheral T cell lymphomas but only 33% of T lymphoblastic lymphomas. When expression of beta F1 and CD3 were considered together, 4 types of T lymphoma were delineated: 1) beta F1+CD3+; 2) beta F1+CD3-; 3) beta F1-CD3+, and 4) beta F1-CD3-. The first represented lymphomas with classical T immunophenotype. The second might represent T lymphomas with aberrant loss of CD3 expression. The third might represent T lymphomas with a putative second TCR or cases with an immature phenotype expressing cytoplasmic CD3 only. The fourth type included cases that may be derived from natural killer cells instead of T cells, cases of T lymphoma with aberrant loss of both beta F1 and CD3, and some cases of immature T cell (lymphoblastic) lymphoma. beta F1-CD3- lymphomas exhibited a remarkable predilection for the nasal region. beta F1 is useful in studying T cell lymphomas and distinguishing a novel immunophenotype frequently expressed by nasal lymphomas.
authors: Institute of Pathology, Caritas Medical Center, Kowloon, Hong Kong.
authors: C S
authors: CS
authors: Ng
authors: J K
authors: JK
authors: Chan
authors: P K
authors: PK
authors: Hui
authors: W C
authors: WC
authors: Chan
authors: S T
authors: ST
authors: Lo
mesh_terms: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis* / Q000235:genetics / Q000276:immunology; D010641:Phenotype; D011971:Receptors, Immunologic / Q000276:immunology*; D013194:Staining and Labeling; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation; D011971:Receptors, Immunologic