This is a multicenter, phase II neoadjuvant trial in hormone-sensitive, HER-negative, luminal B, premenopausal breast cancer patients stage II-IIIA.~Patients will undergo a core-biopsy of the primary tumor, for the histological diagnosis and the biological characterization of the tumor.~After confirmation of eligibility and informed consent signature, the patients will start neoadjuvant treatment including:~Epirubicin 90 mg/mq + Cyclophosphamide 600 mg/mq i.v. every 3 weeks for 3 courses, followed by the combination of Nivolumab (240 mg flat dose i.v. each 2 weeks) for 8 courses and exemestane 25 mg (orally, continuous daily dose, to be continued until surgery). Patients will start LHRH analogue (Triptorelin 3.75mg 1 fl i.m. every 28 days) concomitantly to anthracycline-based chemotherapy, to be continued until surgery.
Multicentric, phase II neoadjuvant trial in hormone-positive, HER-negative, luminal B, premenopausal breast cancer patients stage II-IIIA. Patients receive as neoadjuvant treatment before surgery: three courses of anthracycline-based chemotherapy followed by exemestane p.o. daily plus nivolumab i.v. 2-weekly for 8 courses. GnRH analogues are started concomitantly with chemotherapy and maintained until the completion of neoadjuvant treatment.