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This article is part of the supplement: 6th International Symposium on the Intraductal Approach to Breast Cancer

Open Access Meeting abstract

Intraductal assessment to determine response to chemopreventive interventions

ER Sauter

Author Affiliations

University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND, USA

BMC Proceedings 2009, 3(Suppl 5):S22  doi:10.1186/1753-6561-3-S5-S22

The electronic version of this article is the complete one and can be found online at:

Published:24 July 2009

© 2009 Sauter; licensee BioMed Central Ltd.

Meeting abstract

One of the difficulties that translational scientists encounter in evaluating agents to prevent breast cancer is the assessment of efficacy in real time. Classically, one evaluates chemopreventive efficacy based on whether the intervention leads to a lower number of cancers in the treatment than in the control group(s), but these studies require a large sample size and/or take years to complete in order to obtain a sufficient number of events for statistical comparison. We have used intraductal evaluation of breast nipple aspirate fluid (NAF) and mammary ductoscopy (MD) to assess response to both pharmacologic and nutritional chemopreventive interventions. Specifically, we have measured expression of specific proteins in NAF and changes in DNA methylation in MD specimens both before after the interventions. I will review our findings using these strategies, and discuss both the strengths and limitations of the approach.