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Clinical Trial Summary

The purpose of this study is to learn about the safety and effects of giving vepdegestrant along with PF-07220060. Vepdegestrant is studied to see if it can be a possible treatment for advanced metastatic breast cancer. This type of cancer would have spread from where it started (breast) to other parts of the body and would be tough to treat. The study is seeking for participants who have breast cancer that: - is hard to treat (advanced) and may have spread to other organs (metastatic). - is sensitive to hormonal therapy (it is called estrogen receptor positive). - is no longer responding to treatments taken before starting this study. All the participants will receive vepdegestrant and PF-07220060. Both medicines will be taken by mouth. The medicines will be taken at home. The experience of people receiving the study medicines will be studied. This will help see if the study medicines are safe and effective. Participants will continue to take vepdegestrant and PF-07220060 until: - their cancer is no longer responding, or - side effects become too severe. They will have visits at the study clinic about every 4 weeks.


Clinical Trial Description

C4891026 is a prospective, open-label, multicenter, Phase 1b/2 study to evaluate the safety, antitumor activity, and pharmacokinetic (PK) of vepdegestrant in combination with PF-07220060 in the treatment of participants with Estrogen Receptor Positive/Human Epidermal Growth Factor Receptor 2 Negative (ER+/HER2-) Advanced or Metastatic Breast Cancer. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06206837
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 1/Phase 2
Start date February 19, 2024
Completion date February 13, 2026

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