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Imperial Cancer Research Fund Medical Oncology Unit and Medical Research Council Human Genetics Unit, Western General Hospital, Crewe Road, Edinburgh EH4 2XU [H. G., J. E. V. W., K. T., J. M., R. C. F. L., D. J. P., J. F. S.], and School of Biological and Medical Sciences, University of St. Andrews, St. Andrews, [C. M. S.], United Kingdom
Previous cytogenetic and loss of heterozygosity (LOH) data suggest that disruption of chromosome 11q23-qter occurs frequently in epithelial ovarian cancer and is associated with an adverse clinicopathological phenotype. Ten polymorphic microsatellite repeat loci were analyzed by PCR from the 11q22q25 region between D11S35 and D11S968 in 40 ovarian tumors (including 31 epithelial ovarian cancers). Two distinct regions of loss were detected, suggesting possible sites for genes involved in epithelial ovarian neoplasia: a large centromeric region between D11S35 and D11S933 (11q22q23.3) and a telomeric 8.5-Mb region lying between D11S934 and D11S1320 (11q23.324.3) not previously defined. LOH of the latter region but not the former one was significantly associated with poor survival, despite all tumors in this study having LOH somewhere on chromosome 11. This analysis provides a starting point for positional cloning.
1 To whom requests for reprints should be addressed.
2 Supported by a grant from the Scottish Hospitals Endowments Research Trust.
Received 12/29/95. Accepted 1/17/96.
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