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REPORT DATE
November 2013
REPORT TYPE
PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER
University of WisconsinMadison, WI 53715-1218
SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S)
U.S. Army Medical Research and Materiel Command Fort Detrick, Maryland 21702-5012
SPONSOR/MONITOR'S REPORT NUMBER(S)
DISTRIBUTION / AVAILABILITY STATEMENTApproved for Public Release; Distribution Unlimited
SUPPLEMENTARY NOTES
ABSTRACTDuctal carcinoma in situ (DCIS) makes up 18% of all new breast cancer diagnoses, and is considered a precursor to invasive breast cancer even though the majority of cases-almost 70%-may never progress to invasive disease. Markers that identify which patients are most likely to experience progression are critically needed so that fewer patients are over-treated. This study is evaluating two novel tumor markers that may indicate greater risk of tumor progression based on recent work that suggests that stromal syndecan-1 expression induces an extracellular matrix with aligned collagen fiber architecture, and that this collagen alignment in turn facilitates malignant cell invasion. We are using archived tumor tissue from 267 cases of DCIS of the breast to evaluate syndecan-1 expression and collagen alignment. These DCIS cases, diagnosed between 1995 and 1999, have been followed for breast cancer outcomes; 13% of cases have experienced a second breast cancer diagnosis. Analysis suggests that treatment and method of detection are important covariates to include in statistical modeling. Preliminary analysis of collagen alignment and syndecan-1 expression suggests that features of the tumor microenvironment are related with disease-free survival after a diagnosis of DCIS. Progress report: Evaluation of the collagen alignment patterns for the tumor tissue slides has been completed. Collagen fibers were imaged using second harmonic generation (SHG) microscopy, which is a non-linear optical imaging form of microscopy. The technique takes advantage of the unique non-centrosymmetric structure of collagen in combination with the multiphoton a...