Characteristics of 114 patients with primary metastatic breast cancer.

HR = hormonal receptor (estrogen and/or progesterone receptor), GGT = gamma-glutamyltransferase, HER2 = human epidermal growth factor 2-receptorCharacteristics of 114 patients with primary metastatic breast cancer.HR=激素受体（hormonal receptor，雌激素受体和/或孕激素受体），GGT=γ-谷氨酰转移酶（gamma-glutamyltransferase），HER2= 人表皮生长因子2受体（human epidermal growth factor 2-receptor）；本数据集包含114例原发性转移性乳腺癌患者的临床特征。