To further explore the relationship between TIMP-1 and clinical prognosis in patients with breast cancer, we evaluated the prognostic value of TIMP-1 in a large publically available clinical breast cancer microarray database [33] that includes data from 1027 patients (459 luminal-A, 308 luminal-B, 75 HER2+ and 185 TNBC). Here, ERBB2 is linked to breast cancer.