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Amcenestrant (SAR439859) Plus Palbociclib as First Line Therapy for Patients With ER (+) HER2(-) Advanced Breast Cancer
Amcenestrant (SAR439859) Plus Palbociclib as First Line Therapy for Patients With ER (+) HER2(-) Advanced Breast Cancer

NCT04478266

TerminatedPhase 3

Sponsor: Sanofi

Conditions: Breast Cancer

Interventions: Amcenestrant-matching placebo, SAR439859, Palbociclib, Letrozole, Goserelin

Countries: United States, Argentina, Australia, Austria, Belgium, Brazil, Bulgaria, Canada

Primary Objective: To determine whether Amcenestrant (SAR439859) in combination with palbociclib improves progression free survival (PFS) when compared with letrozole in combination with palbociclib in participants with estrogen receptor positive (ER+), human epidermal growth factor receptor 2 negative (HER2-) advanced breast cancer who have not received any prior systemic anticancer therapies for advanced disease. Secondary Objective: * To compare the overall survival in both treatment arms. * To evaluate the objective response rate in both treatment arms. * To evaluate the duration of response in both treatment arms. * To evaluate the clinical benefit rate in both treatment arms. * To evaluate progression-free survival on next line of therapy. * To evaluate the pharmacokinetics of amcenestrant, and palbociclib. * To evaluate health-related quality of life in both treatment arms. * To evaluate the time to first chemotherapy in both treatment arms. * To evaluate safety in both treatment arms.

Eligibility overview

Sex: ALL

Age: 18 Years to

Healthy volunteers: No

Study type: INTERVENTIONAL

Eligibility criteria
Inclusion criteria :

* Adult participants with loco-regional recurrent or metastatic disease not amenable to curative treatment.
* Confirmed diagnosis of ER+/HER2- breast cancer.
* No prior systemic treatment for loco-regional recurrent or metastatic disease.
* Measurable disease evaluable per Response Evaluation Criterion in Solid Tumors (RECIST) v.1.1 or non-measurable bone-only disease.
* Eastern Cooperative Oncology Group (ECOG) performance status 0-2.
* Participants should be willing to provide tumor tissue.
* Capable of giving informed consent.

Exclusion criteria:

* Known active brain metastases.
* Prior neo (adjuvant) treatment with any selective estrogen receptor degrader (SERD).
* Inadequate organ and marrow function.
* Disease recurrence while on, or within 12 months of completion of (neo)adjuvant endocrine therapy.
* Pregnant, breastfeeding, or woman of childbearing potential unwilling to use recommended contraception methods.
* Male participants who disagree to follow contraception.
* Participants with advanced, symptomatic visceral spread, that are at risk of life-threatening complications in the short term.
* Participants with significant concomitant illness.

The above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.
Locations (249)
  • Daphne, Alabama, United States
  • Glendale, Arizona, United States
  • Tucson, Arizona, United States
  • Fullerton, California, United States
  • Los Alamitos, California, United States
  • Santa Monica, California, United States
  • Denver, Colorado, United States
  • Lakeland, Florida, United States
  • Orlando, Florida, United States
  • Palm Bay, Florida, United States
  • Athens, Georgia, United States
  • Atlanta, Georgia, United States
  • Savannah, Georgia, United States
  • Thomasville, Georgia, United States
  • Chicago, Illinois, United States
  • Fort Wayne, Indiana, United States
  • Iowa City, Iowa, United States
  • Westwood, Kansas, United States
  • Scarborough, Maine, United States
  • Boston, Massachusetts, United States
  • Danvers, Massachusetts, United States
  • Newton, Massachusetts, United States
  • Ann Arbor, Michigan, United States
  • Kansas City, Missouri, United States
  • St Louis, Missouri, United States
  • Las Vegas, Nevada, United States
  • New Brunswick, New Jersey, United States
  • Paramus, New Jersey, United States
  • New York, New York, United States
  • Stony Brook, New York, United States
  • + 219 more on CT.gov