title: Leu-22 (L60). A more sensitive marker than UCHL1 for peripheral T-cell lymphomas, particularly large-cell types.
abstract: Paraffin-embedded sections of 77 peripheral T-cell lymphomas (PTCLs) were stained with several monoclonal antibodies, including the preferential T-cell markers Leu-22 (L60[CD43]) and UCHL1 (CD45RO). The staining characteristics of L60 and UCHL1 were compared to determine the value of each in the immunophenotypic analysis of PTCLs. Lineage specificity was evaluated among 39 B-cell lymphomas and 33 cases of Hodgkin's disease (HD). L60 and/or UCHL1 stained 95% of PTCLs, whereas L60 and UCHL1 alone stained 90% and 69% of cases, respectively. L60 demonstrated significantly greater numbers of immunopositive tumor cells than UCHL1 in 37% of the PTCL cases, principally because of enhanced marking of large, neoplastic cells. UCHL1 was a better marker in only 10% of the PTCL cases. L60 stained 33% of B-cell lymphomas, usually small lymphocytic or lymphoplasmacytic types. UCHL1 stained only 8% of B-cell lymphomas, all large-cell types. L60 and UCHL1 stained Reed-Sternberg cells and variants in three cases of nodular sclerosing HD. These results suggest that both L60 and UCHL1 are useful markers of PTCLs in routinely processed tissue. L60 is a more sensitive marker of large neoplastic T-cells than UCHL1 but is less lineage-specific. These antibodies are most effective when used as part of a panel of monoclonal antibodies.
authors.affiliation: Department of Pathology, Vanderbilt University Medical Center, Nashville, Tennessee 37232.
authors.forename: W R
authors.initials: WR
authors.lastname: Macon
authors.forename: T T
authors.initials: TT
authors.lastname: Casey
authors.forename: M C
authors.initials: MC
authors.lastname: Kinney
authors.forename: R D
authors.initials: RD
authors.lastname: Collins
authors.forename: J B
authors.initials: JB
authors.lastname: Cousar
mesh_terms: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000943:Antigens, Differentiation / Q000032:analysis*; D014408:Biomarkers, Tumor / Q000032:analysis*; D006649:Histocompatibility Antigens / Q000032:analysis*; D006801:Humans; D017493:Leukocyte Common Antigens; D051917:Leukosialin; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis / Q000276:immunology / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000276:immunology / Q000473:pathology; D016411:Lymphoma, T-Cell, Peripheral / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D008264:Macrophages / Q000276:immunology / Q000473:pathology; D012795:Sialoglycoproteins / Q000032:analysis*
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000943:Antigens, Differentiation; D014408:Biomarkers, Tumor; D006649:Histocompatibility Antigens; D051917:Leukosialin; C465014:SPN protein, human; D012795:Sialoglycoproteins; D017493:Leukocyte Common Antigens