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Survival of African Americans with endometrial cancer is significantly worse than that of whites. Mutation of the PTEN tumor suppressor gene and microsatellite instability occur in some endometrial cancers, and they are associated with favorable prognostic features. The aim of this study was to determine whether there is a racial disparity in the frequency(More)
Previous studies have suggested that overexpression of HER-2/neu oncogene occurs in 15-40% of breast cancers and that overexpression is associated with poor prognosis. In the present report, we have used an immunohistochemical technique involving a monoclonal antibody specifically reactive with the external domain of HER-2/neu to study expression of(More)
We examined p53 expression in 107 epithelial ovarian cancers with immunohistochemical techniques using monoclonal antibody PAb1801. High level expression of nuclear p53 protein was detected in the malignant epithelium in 54 (50%) of these cancers. Expression of p53 protein was undetectable in 13 benign gynecological tissues. p53 mRNA from three cancers that(More)
The activation of oncogenic transcription factors defines distinct molecular subsets of T-cell acute lymphoblastic leukaemia and has prognostic relevance in children. We investigated the prognostic effect of the expression levels of eight oncogenic transcription factors--TLX1 (HOX11), TLX3 (HOX11L2), TAL1, TAL2, LYL1, OLIG2 (BHLHB1), LMO1, and LMO2--in 52(More)
The molecular biology underlying the metastatic process in ovarian carcinoma remains poorly understood. For other neoplasms, the induction of angiogenesis by malignant cells has been shown to play a pivotal role in the process of tumor proliferation and metastasis. The purpose of this study was to characterize the degree of angiogenesis in epithelial(More)
Histological grading of fibrillary astrocytic neoplasms has proved to be a valuable prognostic tool, but potentially could benefit from more objective data, such as estimates of proliferative rate. The authors have investigated the prognostic utility of quantitative Ki-67 immunoreactivity in a prospective survival analysis of 36 adult patients with(More)
Ovarian cancer is a highly lethal disease with metastases present in the majority of patients at the time of diagnosis. The molecular mechanisms underlying the metastatic process of this cancer are not well understood. One family of cell-associated and secreted glycoproteins, the mucin glycoproteins, has been implicated in events leading to metastasis of(More)
Immunohistochemical staining for the p53 protein was performed in 107 snap frozen primary endometrial adenocarcinomas and 15 benign uterine tissues using monoclonal antibody PAb1801. No staining was seen in benign samples, whereas intense nuclear staining of cancer cells consistent with overexpression of the p53 protein was observed in 22 of 107 cancers(More)
Leukocyte-endothelium interaction in vivo consists of the rolling of leukocytes along the vascular wall and, under certain conditions, their adherence to endothelial cells. In a rat tumor microcirculation model (mammary adenocarcinoma implanted in rat skinfold window chamber), we demonstrated that this interaction, measured as flux of rolling leukocytes and(More)
The prognostic value of immunophenotype in adult acute lymphoblastic leukemia (ALL) has varied based on the methods used, surface markers studied, and therapy administered. From April 1991 to September 1996, samples of leukemic marrow or blood from 259 eligible and evaluable adult ALL patients entering dose-intensive Cancer and Leukemia Group B (CALGB)(More)