Overview PALbociclib Rechallenge in horMone Receptor-posItive/HER2- Negative Advanced Breast Cancer (PALMIRA) Status: Recruiting Trial end date: 2023-01-01 Target enrollment: Participant gender: Summary Hormone Receptor (HR)-positive/Human Epidermal Growth Factor Receptor 2 (HER2)-negative advanced breast cancer (ABC) Phase: Phase 2 Details Lead Sponsor: MedSIRCollaborator: PfizerTreatments: FulvestrantLetrozolePalbociclib