PGR and triple-negative breast carcinoma: Gallen’s consensus, the subtypes are: luminal A (positive hormone receptors, with strong expression, negative HER2 and low-level Ki67, usually Grade 1 or Grade 2); luminal B-like (HER2-negative, progesterone receptor-positive, but the expression level is lower, clearly high Ki67, usually Grade 3); HER2-positive (depending on positive or negative hormone receptor expression—luminal B or non-luminal, usually Grade 3); triple-negative breast cancer (estrogen receptor-negative, progesterone receptor-negative and HER2-negative, usually Grade 3) [12].