Closed Studies

Breast Cancer Microbiota Study


Ece Mutlu, MD, Rush University Medical Center, Chicago, IL

Study Review

The purpose of this study was to learn more about the types of bacteria that are found in the intestines and how these bacteria metabolize estrogen and other female hormones. The researchers compared bacteria from healthy women, women who had been diagnosed with breast cancer within the last 5 years, and women who had not been diagnosed with breast cancer but had a first-degree relative with breast cancer. The researchers wanted to enroll 700 women. The Call to Action for this study was sent to Army of Women (AOW) members on October 9, 2009. The researchers were able to close enrollment on December 1, 2016, after the AOW provided them with 1,359 women who were interested in enrolling in the study.



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