Detection of Tumor DNA in the Blood of Patients Receiving Standard Therapy for Hormone Receptor-positive (HR+) Non-HER2 Expressing (HER2-) Metastatic Breast Cancer as a Tool to Select Those Who May Benefit From the Next Course of Fulvestrant in Combination With Alpelisib or Ribociclib

Study Summary

After an initial screening phase (SAFIR 03 - SCREENING) to identify patients with blood circulating mutated-PIK3CA tumours persistent, patients will be enrolled in the treatment phase of SAFIR 03 (SAFIR 03 - ARRIBA) that was designed as a randomised, open-label, multicentre, phase II study, for comparison of alpelisib to ribociclib in combination with fulvestrant (as the continuation of the CDK4/6 inhibitor-fulvestrant strategy) in terms of progression-free survival (PFS).