TUMOR REGRESSION ACQUIRED HORMONE RESISTANCE 3 AKT 3 ANTIPROGESTAGENOS 3 ANTIPROGESTINS 3 BREAST CANCER 3 CANCER DE MAMA 3 DE NOVO HORMONE-RESISTANCE 3 DNA-METHYLATION 3 DNMT INHIBITORS 3 ENDOCRINE THERAPY 3 ERK 3 ESTROMA TUMORAL 3 INHIBIDORES DE LAS DNMTS 3 ISOFORMAS DEL RECEPTOR DE PROGESTERONA 3 METASTASIS 3 METILACION 3 PARENQUIMA TUMORAL 3 PI3K/AKT PATHWAY 3 PROGESTERONE RECEPTOR ISOFORMS 3 REGRESION TUMORAL 3 RESISTENCIA HORMONAL ADQUIRIDA 3 RESISTENCIA HORMONAL CONSTITUTIVA 3 TERAPIA ENDOCRINA 3 TUMOR PARENCHYMA 3 TUMOR STROMA 3 VIA PI3K/AKT 3