CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 1,017 enrolled
Drug / intervention
Palbociclib 125mg +2 moredrug
Likely dose
Palbociclib 125mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03079011
NCT03079011Phase 3Completed

Randomized, Open Label, Multicentric Phase III Trial to Evaluate the Safety and Efficacy of Palbociclib in Combination With HT Driven by ctDNA ESR1 Mutation Monitoring in ER+, HER2-negative Metastatic Breast Cancer Patients

UNICANCER·interventional·Posted Mar 14, 2017·Updated Nov 18, 2025

In Brief

A Phase 3 clinical trial evaluating Palbociclib 125mg, Aromatase Inhibitors, and 1 other intervention for Metastatic Breast Cancer. Completed, enrolled 1,017 participants across 82 sites.

Detailed Summary

This study is a randomized, open-label, multicentric, phase III trial conducted in patients receiving aromatase inhibitor and palbociclib as first line therapy for estrogen receptor (ER)-positive HER2-negative metastatic breast cancer and which aims to evaluate, at the onset of ESR1 mutations in circulating tumor DNA, the efficacy of a change of the hormone therapy (aromatase inhibitor (AI) changed to fulvestrant) combined to palbociclib, together with the safety of hormone therapy and palbociclib combination in the overall population.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesFrance
CollaboratorsPfizer

Timeline

Phase 3CompletedFinished
2017201820192020202120222023202420252026
First PostedMar 14, 2017
Enrollment StartMar 22, 2017
Primary CompletionApr 30, 2021
Study CompletionSep 22, 2025
TodayJul 2, 2026
Enrollment to primary: 4.1 yearsPosted 9.3 years ago

Interventions

Palbociclib 125mgdrug

Palbociclib 125 mg once daily for 21 days followed by 7 days off to complete a 28-day cycle

Aromatase Inhibitorsdrug

Letrozole: 2.5 mg once daily on a continuous scheme (tablets, per os) Anastrozole:1 mg once daily on a continuous scheme (tablets , per os) Exemestane: 25 mg once daily on a continuous scheme (tablets, per os)

Fulvestrant Injectable Productdrug

500 mg by intramuscular injection on days 1 and 15 of cycle one and then on day one of each subsequent cycle (28 days)