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Molecular Biology and Genetics |
Departments of Pathology [D. R. S., R. W., Y. Z., D. M. D., H. R., T. J. G., E. R. F., K. R. C.], Internal Medicine [K. R. C., E. R. F.], Pediatrics and Communicable Diseases [R. K., D. E. M., S. M. H.], Biostatistics [J. M. G. T.], Epidemiology [S. L. R. K.], and Statistics [K. A. S., G. M.], The University of Michigan, Ann Arbor, Michigan. 48109, and Department of Pathology, Weill Medical College of Cornell University, New York, New York, 10021 [L. H. E.]
Biologically and clinically meaningful tumor classification schemes have long been sought. Some malignant epithelial neoplasms, such as those in the thyroid and endometrium, exhibit more than one pattern of differentiation, each associated with distinctive clinical features and treatments. In other tissues, all carcinomas, regardless of morphological type, are treated as though they represent a single disease. To better understand the biological and clinical features seen in the four major histological types of ovarian carcinoma (OvCa), we analyzed gene expression in 113 ovarian epithelial tumors using oligonucleotide microarrays. Global views of the variation in gene expression were obtained using PCA. These analyses show that mucinous and clear cell OvCas can be readily distinguished from serous OvCas based on their gene expression profiles, regardless of tumor stage and grade. In contrast, endometrioid adenocarcinomas show significant overlap with other histological types. Although high-stage/grade tumors are generally separable from low-stage/grade tumors, clear cell OvCa has a molecular signature that distinguishes it from other poor-prognosis OvCas. Indeed, 73 genes, expressed 2- to 29-fold higher in clear cell OvCas compared with each of the other OvCa types, were identified. Collectively, the data indicate that gene expression patterns in ovarian adenocarcinomas reflect both morphological features and biological behavior. Moreover, these studies provide a foundation for the development of new type-specific diagnostic strategies and treatments for ovarian cancer.
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K. A. Shedden, J. M. G. Taylor, T. J. Giordano, R. Kuick, D. E. Misek, G. Rennert, D. R. Schwartz, S. B. Gruber, C. Logsdon, D. Simeone, et al. Accurate Molecular Classification of Human Cancers Based on Gene Expression Using a Simple Classifier with a Pathological Tree-Based Framework Am. J. Pathol., November 1, 2003; 163(5): 1985 - 1995. [Abstract] [Full Text] [PDF] |
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E. Reed, J. J. Yu, A. Davies, J. Gannon, and S. L. Armentrout Clear Cell Tumors Have Higher mRNA Levels of ERCC1 and XPB Than Other Histological Types of Epithelial Ovarian Cancer Clin. Cancer Res., November 1, 2003; 9(14): 5299 - 5305. [Abstract] [Full Text] [PDF] |
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M. E. Schaner, D. T. Ross, G. Ciaravino, T. Sorlie, O. Troyanskaya, M. Diehn, Y. C. Wang, G. E. Duran, T. L. Sikic, S. Caldeira, et al. Gene Expression Patterns in Ovarian Carcinomas Mol. Biol. Cell, November 1, 2003; 14(11): 4376 - 4386. [Abstract] [Full Text] [PDF] |
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K. K. Zorn, A. A. Jazaeri, C. S. Awtrey, G. J. Gardner, S. C. Mok, J. Boyd, and M. J. Birrer Choice of Normal Ovarian Control Influences Determination of Differentially Expressed Genes in Ovarian Cancer Expression Profiling Studies Clin. Cancer Res., October 15, 2003; 9(13): 4811 - 4818. [Abstract] [Full Text] [PDF] |
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D. R. Schwartz, R. Wu, S. L. R. Kardia, A. M. Levin, C.-C. Huang, K. A. Shedden, R. Kuick, D. E. Misek, S. M. Hanash, J. M. G. Taylor, et al. Novel Candidate Targets of {beta}-Catenin/T-cell Factor Signaling Identified by Gene Expression Profiling of Ovarian Endometrioid Adenocarcinomas Cancer Res., June 1, 2003; 63(11): 2913 - 2922. [Abstract] [Full Text] [PDF] |
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A. Hirasawa, F. Saito-Ohara, J. Inoue, D. Aoki, N. Susumu, T. Yokoyama, S. Nozawa, J. Inazawa, and I. Imoto Association of 17q21-q24 Gain in Ovarian Clear Cell Adenocarcinomas with Poor Prognosis and Identification of PPM1D and APPBP2 as Likely Amplification Targets Clin. Cancer Res., June 1, 2003; 9(6): 1995 - 2004. [Abstract] [Full Text] [PDF] |
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R. Wu, L. Lin, D. G. Beer, L. H. Ellenson, B. J. Lamb, J.-M. Rouillard, R. Kuick, S. Hanash, D. R. Schwartz, E. R. Fearon, et al. Amplification and Overexpression of the L-MYC Proto-Oncogene in Ovarian Carcinomas Am. J. Pathol., May 1, 2003; 162(5): 1603 - 1610. [Abstract] [Full Text] [PDF] |
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G. Singer, R. Oldt III, Y. Cohen, B. G. Wang, D. Sidransky, R. J. Kurman, and I.-M. Shih Mutations in BRAF and KRAS Characterize the Development of Low-Grade Ovarian Serous Carcinoma J Natl Cancer Inst, March 19, 2003; 95(6): 484 - 486. [Abstract] [Full Text] [PDF] |
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