RESEARCH PROPOSAL: Breast cancer rivals lung cancer as one of the leading causes of morbidity and mortality in U.S. women, accounting for approximately 25% of their cancer deaths. Significant progress has been made in understanding the genetics of breast cancer including the recent identification of a critical tumor suppressor gene, BRCA1. Other genes, including TP53 and MTS1, have demonstrated involvement in breast carcinogenesis. In general, cancer arises from cells that escape normal growth regulation enabling them to proliferate rapidly, invade locally and metastasize to distant sites. Genetic study of colorectal cancer has shown that tumorigenesis is the result of a multistep molecular process involving both the activation of protooncogenes and inactivation of tumor suppressor genes. Both gene amplification and loss of heterozygosity (LOH) studies support the hypothesis that alterations in multiple interacting growth-regulatory genes are critical in breast carcinogenesis. Characterization of all these alterations is necessary to understand their interrelated roles in breast cancer and to ultimately facilitate improved medical management of breast cancer for all women. The goal of this research is to isolate a putative breast cancer gene which has been recently localized to chromosome 17q25 (distal to BRCA1) by LOH and cytogenetic studies.
The specific aims are to: 1) Define the smallest region of LOH on 17q25 by analysis of matched tumor and normal tissue with existing and newly developed highly polymorphic microsatellite markers 2) Analyze non-random 17q25 cytogenetic translocation breakpoints in breast carcinomas 3) Construct a YAC/P1 contig spanning the smallest region of LOH 4) Isolate expressed DNA sequences from this interval and 5) Elucidate this gene's role in breast cancer.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Clinical Investigator Award (CIA) (K08)
Project #
5K08CA066613-03
Application #
2390865
Study Section
Cancer Institutional Fellowship Review Committee (CT)
Project Start
1995-04-07
Project End
2000-03-31
Budget Start
1997-04-01
Budget End
1998-03-31
Support Year
3
Fiscal Year
1997
Total Cost
Indirect Cost
Name
University of Michigan Ann Arbor
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
791277940
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109
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Martin, D M; Gencyuz, C F; Petty, E M (2001) Systemic lupus erythematosus in a man with Noonan syndrome. Am J Med Genet 102:59-62
Kalikin, L M; Sims, H L; Petty, E M (2000) Genomic and expression analyses of alternatively spliced transcripts of the MLL septin-like fusion gene (MSF) that map to a 17q25 region of loss in breast and ovarian tumors. Genomics 63:165-72
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Martin, D M; Probst, F J; Camper, S A et al. (2000) Characterisation and genetic mapping of a new X linked deafness syndrome. J Med Genet 37:836-41
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Petty, E M; Yanik, G A; Hutchinson, R J et al. (2000) Successful bone marrow transplantation in a patient with Schimke immuno-osseous dysplasia. J Pediatr 137:882-6
Kalikin, L M; George, R A; Keller, M P et al. (1999) An integrated physical and gene map of human distal chromosome 17q24-proximal 17q25 encompassing multiple disease loci. Genomics 57:36-42

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