BACKGROUND: Although criteria are established for the histologic diagnosis of atypical nevi (AN), consensus about the criteria in the diagnosis of and in the definition of AN is limited. Moreover, intraobserver and interobserver differences in the application of these criteria for the diagnosis of AN have been observed. OBJECTIVE: We sought to determine the usefulness of HLA antigen expression as a biomarker of AN. METHODS: The immunoperoxidase reaction was used to mark common nevi and AN with HLA class I heavy chain-, β2microglobulin (β2m)-, and HLA class II β chain-specific monoclonal antibodies. RESULTS: HLA class I heavy chain, β2m, and HLA class II β chain were expressed in 5 (8.6%) of the 58 common nevi and in 46 (∼72%) of the 64 atypical melanocytic lesions. Among common lesions, only halo nevi expressed HLA class I heavy chain, β2m, and HLA class II β chain. The level of HLA class I heavy chain β2m and of HLA class II β chain expression correlated with the degree of cytologic atypia and architectural disorder. LIMITATIONS: The number of lesions tested and the subjective nature of the analysis of immunohistochemical staining of tissue sections are both limitations. CONCLUSIONS: The data presented suggest that HLA antigen expression is an objective biomarker that correlates well with the degree of cytologic atypia in AN and may: (1) be useful to distinguish common nevi from AN, and (2) represent a more objective measure to determine which AN should be excised.
BACKGROUND: Although criteria are established for the histologic diagnosis of atypical nevi (AN), consensus about the criteria in the diagnosis of and in the definition of AN is limited. Moreover, intraobserver and interobserver differences in the application of these criteria for the diagnosis of AN have been observed. OBJECTIVE: We sought to determine the usefulness of HLA antigen expression as a biomarker of AN. METHODS: The immunoperoxidase reaction was used to mark common nevi and AN with HLA class I heavy chain-, β2microglobulin (β2m)-, and HLA class II β chain-specific monoclonal antibodies. RESULTS: HLA class I heavy chain, β2m, and HLA class II β chain were expressed in 5 (8.6%) of the 58 common nevi and in 46 (∼72%) of the 64 atypical melanocytic lesions. Among common lesions, only halo nevi expressed HLA class I heavy chain, β2m, and HLA class II β chain. The level of HLA class I heavy chain β2m and of HLA class II β chain expression correlated with the degree of cytologic atypia and architectural disorder. LIMITATIONS: The number of lesions tested and the subjective nature of the analysis of immunohistochemical staining of tissue sections are both limitations. CONCLUSIONS: The data presented suggest that HLA antigen expression is an objective biomarker that correlates well with the degree of cytologic atypia in AN and may: (1) be useful to distinguish common nevi from AN, and (2) represent a more objective measure to determine which AN should be excised.
Authors: Jennifer Nguyen; Richard Bernert; Kevin In; Paul Kang; Noemi Sebastiao; Chengcheng Hu; K Taraszka Hastings Journal: Melanoma Res Date: 2016-04 Impact factor: 3.599
Authors: John van Tuyn; Farah Jaber-Hijazi; Douglas MacKenzie; John J Cole; Elizabeth Mann; Jeff S Pawlikowski; Taranjit Singh Rai; David M Nelson; Tony McBryan; Andre Ivanov; Karen Blyth; Hong Wu; Simon Milling; Peter D Adams Journal: J Invest Dermatol Date: 2017-06-22 Impact factor: 8.551
Authors: Linda Gao; Frans A van Nieuwpoort; Jacoba J Out-Luiting; Paul J Hensbergen; Femke A de Snoo; Wilma Bergman; Remco van Doorn; Nelleke A Gruis Journal: J Skin Cancer Date: 2012-11-28