Abstract
P53 and cyclin D1 are interacting regulatory genes and both are frequently altered in breast cancer. We analysed p53 mutation by SSCP and sequencing methods as well as p53 protein accumulation immunohistochemically in 34 consecutively operated breast tumors. None of 4 fibroadenomas revealed p53 mutation or p53 protein accumulation. Mutation of p53 was present in 7 carcinomas. Immunohistochemistry revealed accumulation of p53 protein in 6 carcinomas and there was a significant correlation between p53 mutation and protein accumulation. Overexpression of cyclin D1 protein was observed in 11 carcinomas by immunohistochemistry and no correlation was observed between cyclin D1 overexpression and p53 mutation or accumulation. Our data support the concept that the p53-cyclin D1 signal pathway and the cyclin D1 cascade are disregulated in breast cancer.
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Tanyi, J., Tory, K., BÁnkfalvi, A. et al. Analysis of p53 mutation and cyclin d1 expression in breast tumors. Pathol. Oncol. Res. 5, 90–94 (1999). https://doi.org/10.1053/paor.1999.0201
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DOI: https://doi.org/10.1053/paor.1999.0201