TACTIVE-U: A Study to Learn About the Study Medicine (Vepdegestrant) When Given With Other Medicines in People With Advanced or Metastatic Breast Cancer (Sub-Study A)
Condition(s) studied
Investigational drug(s) / intervention(s)
ARV-471: Daily oral dosages of ARV-471 continuously, dose escalation/de-escalation in Phase 1b until the recommended phase 2 dose (RP2D) determined, cycles lasting 28 days
Abemaciclib: Daily oral dosages of Abemaciclib continuously, cycles lasting 28 days
Study summary
The purpose of this clinical trial is to learn about the safety and effects of the study medicine (called ARV-471) when given together with other medicines for the potential treatment of advanced or metastatic breast cancer.
This study is seeking participants who have breast cancer that:
* is advanced, may have spread to other organs (metastatic) and cannot be fully treated by surgery or radiation therapy
* is sensitive to hormonal therapy (it is called estrogen receptor positive); and
* is no longer responding to previous treatments This study is divided into separate sub-studies.
For Sub-Study A:
All participants will receive ARV-471 and a medicine called abemaciclib. ARV-471 will be given by mouth, at home, 1 time a day. Abemaciclib will be given by mouth, at home, 2 times a day. We will examine the experiences of people receiving the study medicines. This will help us determine if the study medicines are safe and effective.
Participants will continue to take ARV-471 and abemaciclib 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.
Eligibility
Primary outcome measure(s)
- Phase 1b: number of participants with dose limiting toxicities — 28 days
Dose Limiting Toxicities rate for ARV-471 in combination with abemaciclib, estimated based on data from DLT-evaluable participants during the DLT observation period (Cycle 1 \[28 days\]). - Phase 2: percentage of participants with objective response by investigator assessment — Up to approximately 1 year
Objective response (OR) refers to confirmed complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumor (RECIST) version 1.1. as determined by investigator assessment.
Trial sites (37)
| Facility | City | Region | Status |
|---|---|---|---|
| Stanford Women's Cancer Center | Palo Alto | California | |
| UCSF Medical Center at Mission Bay | San Francisco | California | |
| Moffitt Cancer Center - International Plaza | Tampa | Florida | |
| Moffitt Cancer Center, Richard M. Shulze Family Foundation Outpatient Center | Tampa | Florida | |
| Moffitt McKinley Hospital | Tampa | Florida | |
| Memorial Hospital | Shiloh | Illinois | |
| Siteman Cancer Center - Shiloh | Shiloh | Illinois | |
| Siteman Cancer Center - St Peters | City of Saint Peters | Missouri | |
| Siteman Cancer Center - West County | Creve Coeur | Missouri | |
| Siteman Cancer Center - North County | Florissant | Missouri | |
| Siteman Cancer Center | St Louis | Missouri | |
| Barnes-Jewish Hospital | St Louis | Missouri | |
| Washington University School of Medicine - Siteman Cancer Center | St Louis | Missouri | |
| Washington University School of Medicine | St Louis | Missouri | |
| Siteman Cancer Center - South County | St Louis | Missouri | |
| U.T. MD Anderson Cancer Center, Investigational Pharmacy Services - Unit 376 | Houston | Texas | |
| U.T. MD Anderson Cancer Center | Houston | Texas | |
| University of Texas MD Anderson Cancer Center | Houston | Texas | |
| Northwest Medical Specialties, PLLC | Bonney Lake | Washington | |
| Northwest Medical Specialties, PLLC | Federal Way | Washington | |
| Northwest Medical Specialties, PLLC | Gig Harbor | Washington | |
| Northwest Medical Specialties, PLLC | Puyallup | Washington | |
| Northwest Medical Specialties, PLLC | Tacoma | Washington | |
| BC Cancer Vancouver | Vancouver | British Columbia | |
| BC Cancer Vancouver | Vancouver | British Columbia | |
| The Ottawa Hospital - General Campus | Ottawa | Ontario | |
| Sunnybrook Research Institute | Toronto | Ontario | |
| CIUSSS- saguenay-Lac-Saint-Jean | Chicoutimi | Quebec | |
| Jewish General Hospital | Montreal | Quebec | |
| Fondazione Policlinico Universitario Agostino Gemelli IRCCS - Università Cattolica del Sacro Cuore | Rome | Lazio | |
| Istituto di Candiolo IRCCS - Fondazione del Piemonte per l'Oncologia | Candiolo | Torino | |
| Hospital Universitari Vall d'Hebron | Barcelona | Barcelona [barcelona] | |
| Hospital Universitari Dexeus | Barcelona | Catalunya [cataluña] | |
| Clinica Universidad de Navarra | Madrid | Madrid, Comunidad de | |
| Hospital Universitario 12 de Octubre | Madrid | Madrid, Comunidad de | |
| Clinica Universidad de Navarra | Pamplona | Navarre | |
| Hospital Universitario Virgen Del Rocio | Seville | Spain |
On this site
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Other trials for the same condition
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
View NCT05548127 on ClinicalTrials.gov ↗ ← All trials in Canada