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Molecular Heterogeneity in Primary and Metastatic Prostate Tumor Tissue

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Annual summary rept. 30 Sep 2012-29 Sep 2013

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The overarching goal of the grant is to characterize molecular heterogeneity in multi-focal and metastatic prostate cancer. Aim 1 focuses on a 4-gene signature of prostate cancer prognosis, and whether the signature differs across within-patient tumor nodules. Aim 2 compares gene expression profiles between primary and lymph node metastases in order to identify genes involved in metastatic progression of prostate cancer. Scope In year 1, Dr. Kasperzyk has received IRB approval, completed a series of courses to augment her expertise in prostate cancer epidemiology, has coordinated meetings to discuss the study progress with collaborators, and has begun specimen and data collection for the proposed work. In the upcoming year 2, Dr. Kasperzyk will complete data collection, lead the statistical analyses, and publish the findings in peer-reviewed journals. Major Findings To date, the proposed biomarkers are in the process of being measured. In a related analysis of tumor expression of prostate-specific membrane antigen PSMA and prostate cancer-specific mortality, Kasperzyk et al. found that PSMA was positively correlated with Gleason score and tumor angiogenesis, but was not an independent predictor of prostate cancer survival Cancer Epidemiol Biomarkers Prev, in press. Significance The clinical significance of the project is to better characterize putative prognostic markers for prostate cancer, as well as identify potential therapeutic targets for secondary prevention.

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  • Medicine and Medical Research

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