Most triple-negative breast cancer patients who were treated with chemotherapy to shrink the tumor prior to surgery still had multiple genetic mutations in their tumor cells, according to a study by Vanderbilt-Ingram Cancer Center (VICC) investigators.

A study led by Vanderbilt-Ingram Cancer Center investigators has identified a gene expression pattern that may explain why chemotherapy prior to surgery isn’t effective against some tumors and suggests new therapy options for patients with specific subtypes of breast cancer.