Source:http://linkedlifedata.com/resource/umls/id/C2348819
NCI: Triple-negative breast cancer finding is a negative test result that occurs when the cells in the tumor of a breast cancer patient lack the receptors for both estrogen and progesterone and the human epidermal growth factor receptor 2.,NCI: Triple-negative breast cancer is defined by a lack of expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2/neu).