~42 spots leftby Apr 2026

Palbociclib (PD-0332991) Combined With Fulvestrant In Hormone Receptor+ HER2-Negative Metastatic Breast Cancer After Endocrine Failure (PALOMA-3)

Recruiting in Palo Alto (17 mi)
+268 other locations
Age: 18+
Sex: Female
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 3
Waitlist Available
Sponsor: Pfizer
No Placebo Group
Pivotal Trial (Near Approval)
Prior Safety Data
Breakthrough Therapy

Trial Summary

What is the purpose of this trial?

The study is a randomized, double blind, placebo controlled, Phase 3 clinical trial with the primary objective of demonstrating the superiority of palbociclib in combination with fulvestrant (Faslodex®) over fulvestrant alone in prolonging PFS in women with HR+, HER2 negative metastatic breast cancer whose disease has progressed after prior endocrine therapy. The safety between the two treatment arms will also be compared. During study treatment, pre- and perimenopausal women must be receiving therapy with the LHRH agonist goserelin (Zoladex® or generic).

Research Team

PC

Pfizer CT.gov Call Center

Principal Investigator

Pfizer

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
Any menopausal status
See 6 more

Treatment Details

Interventions

  • Fulvestrant (Estrogen Receptor Antagonist)
  • Palbociclib (CDK4/6 Inhibitor)
  • Placebo (Hormone Therapy)
Participant Groups
2Treatment groups
Experimental Treatment
Active Control
Group I: Arm AExperimental Treatment2 Interventions
Given until objective progression, symptomatic deterioration, unacceptable toxicity, death, or withdrawal of consent, whichever occurs first.
Group II: Arm BActive Control2 Interventions
Given until objective progression, symptomatic deterioration, unacceptable toxicity, death, or withdrawal of consent, whichever occurs first.

Fulvestrant is already approved in Canada, Japan for the following indications:

🇨🇦
Approved in Canada as Faslodex for:
  • Hormone receptor-positive metastatic breast cancer
  • Locally advanced breast cancer
🇯🇵
Approved in Japan as Faslodex for:
  • Hormone receptor-positive metastatic breast cancer
  • Locally advanced breast cancer

Find a Clinic Near You

Who Is Running the Clinical Trial?

Pfizer

Lead Sponsor

Trials
4,712
Recruited
50,980,000+
Known For
Vaccine Innovations
Top Products
Viagra, Zoloft, Lipitor, Prevnar 13

Albert Bourla

Pfizer

Chief Executive Officer since 2019

PhD in Biotechnology of Reproduction, Aristotle University of Thessaloniki

Patrizia Cavazzoni profile image

Patrizia Cavazzoni

Pfizer

Chief Medical Officer

MD from McGill University

AstraZeneca

Industry Sponsor

Trials
4,491
Recruited
290,540,000+

Sir Pascal Soriot

AstraZeneca

Chief Executive Officer since 2012

Veterinary Medicine from École nationale vétérinaire d'Alfort, MBA from HEC Paris

Dr. Cristian Massacesi

AstraZeneca

Chief Medical Officer since 2021

MD from Marche Polytechnic University, Oncology training at Royal Marsden Hospital, Kaplan Comprehensive Cancer Center, and European Institute of Oncology

Pascal Soriot

AstraZeneca

Chief Executive Officer since 2012

Veterinary Medicine from École nationale vétérinaire d'Alfort, MBA from HEC Paris

Cristian Massacesi

AstraZeneca

Chief Medical Officer since 2021

MD from Marche Polytechnic University, Medical Oncology training at Royal Marsden Hospital, Kaplan Comprehensive Cancer Center, and European Institute of Oncology