Leu-22 (L60): A more sensitive marker than UCHL1 for peripheral T-cell lymphomas, particularly large-cell types

W. R. Macon, T. T. Casey, M. C. Kinney, R. D. Collins, J. B. Cousar

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)696-701
Number of pages6
JournalAmerican journal of clinical pathology
Issue number5
StatePublished - 1991
Externally publishedYes


  • Immunohistochemistry
  • Leu-22
  • Monoclonal antibodies
  • Non-Hodgkin's lymphomas
  • Paraffin sections
  • T-cell lymphomas
  • UCHL1

ASJC Scopus subject areas

  • Pathology and Forensic Medicine


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