A Randomized, Multicenter, Open-label, Phase II Trial to Evaluate the Efficacy and Safety of Palbociclib in Combination With Fulvestrant or Letrozole in Patients With HER2 Negative, ER+ Metastatic Breast Cancer
Overview
- Phase
- Phase 2
- Intervention
- Palbociclib
- Conditions
- Metastatic Breast Cancer
- Sponsor
- MedSIR
- Enrollment
- 486
- Locations
- 2
- Primary Endpoint
- 1-year Progression Free Survival
- Status
- Completed
- Last Updated
- last year
Overview
Brief Summary
This is an international, randomized, open-label, controlled, multicenter phase II clinical trial to investigate and compare the safety and efficacy of palbociclib combined with fulvestrant or letrozole in women with ER+, HER2- locally advanced or metastatic breast cancer.
Detailed Description
Patients will be stratified by site of disease (visceral vs. non-visceral) and by onset of metastatic disease diagnose (patients metastatic de novo versus non de novo).
Investigators
Eligibility Criteria
Inclusion Criteria
- •Women 18 years or older with metastatic or locally advanced disease, not amenable to curative therapy
- •Confirmed diagnosis of HR+/HER2- breast cancer
- •Post-menopausal status
- •No prior chemotherapy line in the metastatic setting
- •Measurable disease defined by RECIST version 1.1, or non-measurable disease
- •Eastern Cooperative Oncology Group (ECOG) PS 0-1
- •Adequate organ and marrow function, resolution of all toxic effects of prior therapy or surgical procedures
- •Resolution of all acute toxic effects of prior anti-cancer therapy or surgical procedures to NCICTCAE version 4.0 Grade equal or minor than 1
Exclusion Criteria
- •ER or HER2 unknown disease
- •HER2 positive disease based on local laboratory results
- •Locally advanced breast cancer candidate for a radical treatment
- •Prior (neo)adjuvant endocrine treatment with DFI ≤ 12-months from completion of treatment.
- •Patients with rapidly progressive visceral disease or visceral crisis.
- •Major surgery within 4 weeks of start of study drug
- •Patients with an active, bleeding diathesis
- •Serious concomitant systemic disorder incompatible with the study
- •Are unable to swallow tablets
- •Chronic daily treatment with corticosteroids with a dose of ≥ 10mg/day methylprednisolone equivalent
Arms & Interventions
Arm A
Combination of Palbociclib and Letrozole
Intervention: Palbociclib
Arm A
Combination of Palbociclib and Letrozole
Intervention: Letrozole
Arm B
Combination of Palbociclib and Fulvestrant
Intervention: Palbociclib
Arm B
Combination of Palbociclib and Fulvestrant
Intervention: Fulvestrant
Outcomes
Primary Outcomes
1-year Progression Free Survival
Time Frame: One year
Percentage of patients who are alive and without evidence of tumor progression (defined using RECIST v1.1)
Secondary Outcomes
- Number of Participants With Grade 3/4 Adverse Events, SAEs, Deaths and Discontinuations •(Through study completion. From baseline up to 51 months.)
- Time To Progression (TTP)(Through study completion. From baseline up to 51 months.)
- Overall Survival (OS)(Through study completion. From baseline up to 51 months.)
- Clinical Benefit Rate(Through study completion. From baseline up to 51 months.)
- Overall Response Rate(Through study completion. From baseline up to 51 months.)