Fulvestrant Versus Fulvestrant Plus Palbociclib in Operable Breast Cancer Responding to Fulvestrant

This is a multicenter, international, double-blind randomized Phase III study to evaluate the pathological complete response (pCR) according to Chevalier classification between Fulvestrant® and the combination of Fulvestrant® plus Palbociclib as neoadjuvant therapy of hormone-sensitive patients with operable luminal breast cancer. Eligible patients will be assessed upfront using the OncotypeDX® molecular test (Recurrence Score \<31).