PMID- 11527924 OWN - NLM STAT- MEDLINE DCOM- 20010927 LR - 20071114 IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 42 IP - 10 DP - 2001 Sep TI - Association of HLA class I and class II antigen expression and mortality in uveal melanoma. PG - 2153-6 AB - PURPOSE: Malignant transformation of cells is frequently associated with abnormalities in human leukocyte antigen (HLA) expression. These abnormalities may play a role in the clinical course of the disease, because HLA antigens mediate interactions of tumor cells with T cells and NK cells. Uveal melanoma is a highly malignant tumor of the eye and is characterized by a hematogenic spread to the liver. Little is known about the role of HLA expression in progression of this malignant disease. METHODS: In the present study HLA class I antigen, beta(2)-microglobulin (beta(2)-m), and HLA class II antigen expression was analyzed in primary uveal melanoma lesions by immunoperoxidase staining with monoclonal antibodies of 65 archival clinical samples. The results were correlated with the clinical course of the disease. RESULTS: HLA class I antigen expression and beta(2)-m expression were downregulated in 40 and 35 lesions, respectively. HLA class II antigens were expressed in 30 lesions. Patients with high HLA class I, including beta(2)-m, and HLA class II antigen expression in their primary melanoma lesions had a significantly decreased survival (P = 0.009, P < 0.001, and P = 0.006, respectively). CONCLUSIONS: The findings argue against a major role of cytotoxic T-lymphocyte (CTL)-mediated control of tumor growth in the clinical course of uveal melanoma and are compatible with a potential role of NK-cell-mediated control of hematogenic metastatic spread. FAU - Ericsson, C AU - Ericsson C AD - St. Erik's Eye Hospital, Stockholm, Sweden. FAU - Seregard, S AU - Seregard S FAU - Bartolazzi, A AU - Bartolazzi A FAU - Levitskaya, E AU - Levitskaya E FAU - Ferrone, S AU - Ferrone S FAU - Kiessling, R AU - Kiessling R FAU - Larsson, O AU - Larsson O LA - eng GR - CAA67108/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 RN - 0 (Antibodies, Monoclonal) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (beta 2-Microglobulin) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal MH - Down-Regulation MH - Female MH - Histocompatibility Antigens Class I/*metabolism MH - Histocompatibility Antigens Class II/*metabolism MH - Humans MH - Immunoenzyme Techniques MH - Killer Cells, Natural/physiology MH - Male MH - Melanoma/metabolism/*mortality MH - Middle Aged MH - T-Lymphocytes, Cytotoxic/physiology MH - Uveal Neoplasms/metabolism/*mortality MH - beta 2-Microglobulin/metabolism EDAT- 2001/08/31 10:00 MHDA- 2001/09/28 10:01 CRDT- 2001/08/31 10:00 PHST- 2001/08/31 10:00 [pubmed] PHST- 2001/09/28 10:01 [medline] PHST- 2001/08/31 10:00 [entrez] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2001 Sep;42(10):2153-6.