Clinical Trials Logo

Clinical Trial Summary

A study to learn about a new medicine called ARV-471 (PF-07850327) in people who have advanced metastatic breast cancer.


Clinical Trial Description

The purpose of this study is to learn about the safety and effects of the study medicine ARV-471 (PF-07850327, vepdegestrant) compared to fulvestrant (FUL) in participants with advanced breast cancer. Advanced breast cancer is difficult to cure or control with treatment. The cancer may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body, i.e. bones, lungs, brain, or liver. FUL is a medicine already used for treatment of breast cancer while ARV-471 is a new medicine. This study is seeking participants with breast cancer who: - have cancer that has come back in the place where it started or spread to nearby tissue, lymph nodes, or distant parts of the body. - cannot be fully cured by surgery or radiation therapy. Radiation therapy is the use of high-energy radiation such as x-rays, gamma rays and other sources to kill cancer cells and shrink tumors. - respond to hormonal or endocrine therapy (which target hormones and/or activity of hormone receptors) such as tamoxifen or aromatase inhibitors (this is called estrogen receptor positive disease) - have received one line of CDK4/6 inhibitor therapy (for example palbociclib, ribociclib or abemaciclib) in combination with endocrine therapy (for example letrozole) for advanced cancer. - are allowed up to one other endocrine therapy (for example exemestane) for advanced cancer. Half of the participants will be given ARV-471 while the other half of the participants will be given FUL. Participants who get ARV-471 will take ARV-471 by mouth with food, one time a day. During the first treatment cycle participants who will get FUL will be given FUL by shots into the muscles on Day 1 and again 2 weeks later. After the first month, FUL shots will be given on the first day of each new treatment cycle. One treatment cycle is 28 days. Participants will receive the study medicine until their breast cancer worsens or side effects become too severe. Participants will have visits at the study clinic about every 4 weeks. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05654623
Study type Interventional
Source Pfizer
Contact Pfizer CT.gov Call Center
Phone 1-800-718-1021
Email ClinicalTrials.gov_Inquiries@pfizer.com
Status Recruiting
Phase Phase 3
Start date March 3, 2023
Completion date May 15, 2028

See also
  Status Clinical Trial Phase
Recruiting NCT04653740 - Omic Technologies to Track Resistance to Palbociclib in Metastatic Breast Cancer N/A
Recruiting NCT05156619 - Health Care Disparities in Culturally Diverse, Special Needs & Disadvantaged Populations - Bridging the Gap
Recruiting NCT05173103 - Retrospective Study of 2nd-line Therapies After CDK4/6i + Hormonal Therapy in HR+/HER2- Advanced Breast Cancer
Withdrawn NCT05191004 - Study of NUV-422 in Combination With Fulvestrant in Patients With HR+HER2- aBC Phase 1/Phase 2
Completed NCT00754325 - Randomized Trial of Fulvestrant With or Without Dasatinib in Men and Postmenopausal Women Who Have Hormone Receptor-positive Advanced Breast Cancer Previously Treated With an Aromatase Inhibitor Phase 2
Recruiting NCT04953377 - PFMT Educational Intervention for Patients With Advancer Breast Cancer N/A
Completed NCT03240224 - Bioinformation Therapy for Breast Cancer Phase 2/Phase 3
Recruiting NCT06193525 - FUnctional Selection of Advanced Breast Cancer Patients for Talazoparib Treatment Using the REpair Capacity (RECAP) Test Phase 2
Completed NCT03312738 - A Study of Everolimus Plus Exemestane in Chinese Postmenopausal Women With Estrogen Receptor Positive, Locally Advanced, Recurrent, or Metastatic Breast Cancer After Recurrence or Progression on Non-steroidal Aromatase Inhibitor Phase 2
Active, not recruiting NCT05063786 - Trastuzumab + Alpelisib +/- Fulvestrant vs Trastuzumab + CT in Patients With PIK3CA Mutated Previously Treated HER2+ Advanced BrEasT Cancer (ALPHABET) Phase 3
Completed NCT03205761 - Analysis of Olaparib Response in Patients With BRCA1 and/or 2 Promoter Methylation Diagnosed of Advanced Breast Cancer Phase 2
Recruiting NCT05655598 - TAS-116 Plus Palbociclib in Breast and Rb-null Cancer Phase 1
Active, not recruiting NCT02499146 - Palbociclib Pharmacokinetics Study In Postmenopausal Chinese Women With ER (+), HER2 (-) Advanced Breast Cancer Phase 1
Completed NCT00445458 - A Phase 1/2 Study of HKI-272 (Neratinib) in Combination With Paclitaxel (Taxol) in Subjects With Solid Tumors and Breast Cancer Phase 1/Phase 2
Recruiting NCT04456855 - Locoregional Surgery of the Primary Tumor in de Novo Stage IV Breast Cancer Patients
Completed NCT04408118 - First Line Atezolizumab, Paclitaxel, and Bevacizumab (Avastin®) in mTNBC Phase 2
Recruiting NCT04222413 - Metarrestin (ML-246) in Subjects With Metastatic Solid Tumors Phase 1
Withdrawn NCT04316169 - Hydroxychloroquine, Abemaciclib and Endocrine Therapy in Hormone Receptor Positive (HR+)/Her 2 Negative Breast Cancer Phase 1
Completed NCT00546104 - Phase II Dasatinib Study in Advanced Breast Cancer Phase 2
Completed NCT00387907 - Study of Larotaxel in Combination With Weekly Herceptin® in Patients With HER2 Positive Metastatic Breast Cancer Phase 2