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Technical Advances |



From the Departments of Pathology,*
Internal
MedicineDivision of Hematology/Oncology,
and
Urology,
University of Michigan Comprehensive
Cancer and Geriatrics Center, Ann Arbor, Michigan; and the Department
of Pathology,
Johns Hopkins University School
of Medicine, Baltimore, Maryland
With the completion of the Human Genome Project and high-throughput screening methods using cDNA array and tissue microarray (TMA) technology, there is a pressing need to manage the voluminous data sets generated from these types of investigations. Herein is described a database model to handle 1) clinical and pathology data, 2) TMA location information, and 3) web-based histology results. The model is useful for managing clinical, pathology, and molecular data on >1300 prostate cancer patients dating back to 1995 from the University of Michigan Specialized Program of Research Excellence for prostate cancer. The key components in this multidatabase model are 1) the TMA database, 2) the TMA-image database (TMA-I DB), and 3) the prostate pathology and clinical information databases. All databases were created in Microsoft Access (Microsoft, Redmond, WA). Desired patient, tissue, block, diagnosis, array location, and respective clinical and pathology information is obtained by linking the unique identifier fields among database tables. The TMA database is comprised of interrelated data from 336 prostate cancer patients transferred into 19 TMA blocks with 5451 TMA biopsy cores. Tissue samples include 1695 normal prostate, 3171 prostate cancer, 464 prostatic intraepithelial neoplasia, and 121 atrophy. All 19 TMA blocks have been analyzed over the Internet for several immunohistochemical biomarkers including E-cadherin, prostate-specific antigen, p27Kip1, and Ki-67 labeling index. This system facilitates the statistical analysis of high-density TMA data with clinical and pathology information in an efficient and cost-effective manner. Because the review is performed over the Internet, this system is ideal for collaborative multi-institutional studies.
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