Clinical Trials

This study is being reopened with Mayo IRB for long-term follow-up data purposes only. The initial study IRB# 12-009536 was "completed" prematurely as not all data collection activities had been completed. This study was always separately filed in Rochester and Mankato with two different PIs. Rochester is still open and Mankato was completed prematurely.

The purpose of this study is to compare the effectiveness of fulvestrant to anastrozole or tamoxifen in treating invasive lobular breast cancer, by measuring the level of the biomarker Ki67 found in tumor tissue before and then after treatment.

The purpose of this study is to develop a breast cancer survivor (BCS) multiscale omics database that includes a complete fecal metagenome (gut microbiome) and fecal metabolome characterization. 

The purpose of this study is to estimate the circulating tumor DNA (ctDNA)detection rate and mutational load in breast cancer patients with indications for regional nodal irradiation.

The purpose of this study is to compare the effectiveness of two different combinations of chemotherapy in treating women who have stage II or stage IIIA breast cancer that has spread to the lymph nodes. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known which regimen of chemotherapy is more effective for breast cancer.