PGR and neoplasm: Snai1 was inversely associated with a positive estrogen receptor status (p = 0.041), but not with the progesterone receptor (p = 0.58) nor with the size of the tumor (p = 0.301), presence of metastases (p = 0.57), grade of tumor (P = 0.10, grade I-II/III) or HER2 amplification (p = 0.215).