RECRUITING

A Study to Learn About the Study Medicine Called PF-07248144 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment.

Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

The purpose of this study is to learn about the safety and effects of the study medicine PF-07248144 when given along with fulvestrant for the possible treatment of HR-positive, HER2-negative advanced or metastatic breast cancer. HR-positive breast cancer cells have proteins on their surface called receptors that bind to hormones like estrogen and progesterone (female sex hormones). These hormones can promote the growth of cancer cells. HER2-negative describes cells that have a small amount or none of a protein called HER2 on their surface. In normal cells, HER2 helps control cell growth. Cancer cells that are HER2-negative may grow more slowly and are less likely to recur (come back) or spread to other parts of the body than cancer cells that have a large amount of HER2 on their surface. Advanced cancer is a term that is often used to describe cancer that is unlikely to be cured. Metastatic cancer is the type where the cancer cells spread from one part of the body to another. This study is seeking for participants whose breast cancer has gotten worsen after receiving cyclin dependent kinase (CDK) 4/6 inhibitor-based therapy. Half of participants in this study will receive their usual study treatment, everolimus with endocrine therapy (either exemestane or fulvestrant) for HR-positive/HER2-negative advanced or metastatic breast cancer (A/mBC). The study doctor will discuss which hormone therapy is right for the participant before treatment begins. PF-07248144 is a tablet that will be taken by mouth at home every day in a 28-day cycle. Fulvestrant will be given as two injections (one injection in the buttock) at visits to the study clinic. Everolimus and exemestane are also tablets and will be taken by mouth at home every day in a 28-day cycle. The study will compare the experiences of people receiving PF-07248144 in combination with fulvestrant to those of the people who do not. This will help see if PF-07248144 in combination with fulvestrant is safe and effective.

Official Title

An Interventional, Open-Label, Randomized, Multicenter, Phase 3 Study of PF-07248144 Plus Fulvestrant Compared to Investigator's Choice of Therapy in Adult Participants With Hormone Receptor-Positive, HER2-Negative Advanced/Metastatic Breast Cancer Whose Disease Progressed After Prior CDK4/6 Inhibitor-based Therapy

Quick Facts

Study Start:2025-08-05
Study Completion:2030-11-04
Study Type:Not specified
Phase:Not Applicable
Enrollment:Not specified
Status:RECRUITING

Study ID

NCT07062965

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years
Sexes Eligible for Study:ALL
Accepts Healthy Volunteers:No
Standard Ages:ADULT, OLDER_ADULT
Inclusion CriteriaExclusion Criteria
  1. * Confirmed diagnosis of HR-positive HER2-negative breast cancer with evidence of locally advanced or metastatic disease, which is not amenable to surgical resection or radiation therapy with curative intent.
  2. * Prior CDK4/6 inhibitor therapy in combination with endocrine therapy in advance metastatic setting or in adjuvant setting with documented progression during or within 12 months after the last dose of CDK4/6i.
  3. * Participants are eligible if they previously received CDK4/6i or ET as a monotherapy, or in combination for rechallenge therapy in the advance or metastatic setting; have received prior therapy targeting estrogen receptor 1 (ESR1) or breast cancer gene (BRCA)1/2.
  4. * Measurable disease evaluable per Response Evaluation Criterion in Solid Tumors (RECIST) v.1.1 or non-measurable bone-only disease
  5. * Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) 0 or 1.
  1. * Documented detectable PIK3CA/AKT1/PTEN alterations in tissue
  2. * Received greater than two prior lines of systemic therapy in the advance or metastatic setting
  3. * Had received any prior chemotherapy, including antibody drug conjugates (ADCs), in advance or metastatic setting. Participants who have previously received chemotherapy in the (neo)adjuvant setting are not excluded from the study.
  4. * Any medical or psychiatric condition that may increase the risk of study participation or make the participant inappropriate for the study.
  5. * Renal impairment, hepatic dysfunction, or hematologic abnormalities.

Contacts and Locations

Study Contact

Pfizer CT.gov Call Center
CONTACT
1-800-718-1021
ClinicalTrials.gov_Inquiries@pfizer.com

Principal Investigator

Pfizer CT.gov Call Center
STUDY_DIRECTOR
Pfizer

Study Locations (Sites)

Highlands Oncology Group, PA
Fayetteville, Arkansas, 72703
United States
Highlands Oncology Group, PA
Rogers, Arkansas, 72758
United States
Highlands Oncology Group, PA
Springdale, Arkansas, 72762
United States

Collaborators and Investigators

Sponsor: Pfizer

  • Pfizer CT.gov Call Center, STUDY_DIRECTOR, Pfizer

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2025-08-05
Study Completion Date2030-11-04

Study Record Updates

Study Start Date2025-08-05
Study Completion Date2030-11-04

Terms related to this study

Keywords Provided by Researchers

  • Locally advanced or metastatic breast cancer
  • Estrogen receptor positive [ER(+)]
  • Progesterone receptor positive [PR(+)]
  • Human epidermal growth factor receptor 2 negative [HER2(-)]
  • ER(+)/HER2(-)
  • PR(+)/HER2(-)
  • HR(+)/HER2(-)
  • Advanced Breast Cancer
  • Breast tumor
  • Breast cancer
  • Everolimus
  • Exemestane
  • Fulvestrant
  • Metastatic breast cancer
  • Endocrine Therapy
  • Hormone Therapy
  • Hormone positive breast cancer
  • Recurrent breast cancer
  • HR+
  • HER2-negative
  • Relapse
  • Recurrent
  • Second line treatment
  • Third line treatment
  • Left Sided Breast Cancer
  • Right Sided Breast Cancer
  • Unilateral Breast Cancer
  • Cancer of the Breast
  • CDK4/6i
  • CDK4/6i-based Therapy
  • Bilateral Breast Cancer
  • Progression After CDK4/6i-based therapy

Additional Relevant MeSH Terms

  • Breast Cancer