New pill combo aims to shrink Hard-to-Treat breast tumors

NCT ID NCT06125522

First seen Oct 31, 2025 · Last updated May 12, 2026 · Updated 32 times

Summary

This study tests two oral drugs, vepdegestrant and samuraciclib, taken daily at home by adults with advanced or metastatic ER+ breast cancer that no longer responds to standard treatments. The goal is to see if the combination is safe and can shrink tumors. Participants continue until the cancer progresses or side effects become too severe.

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Contacts and locations

Locations

  • Barnes-Jewish Hospital

    St Louis, Missouri, 63110, United States

  • Centre Georges François Leclerc

    Dijon, Côte-d'or, 21079, France

  • Clinical and Translational Research Unit (CTRU)

    Palo Alto, California, 94304, United States

  • Fondazione IRCCS San Gerardo dei Tintori

    Monza, Lombardy, 20900, Italy

  • Fondazione Policlinico Universitario Agostino Gemelli IRCCS - Università Cattolica del Sacro Cuore

    Roma, 00168, Italy

  • Highlands Oncology Group

    Fayetteville, Arkansas, 72703, United States

  • Highlands Oncology Group

    Rogers, Arkansas, 72758, United States

  • Highlands Oncology Group

    Springdale, Arkansas, 72762, United States

  • Institut Jules Bordet

    Anderlecht, Bruxelles-capitale, Région de, 1070, Belgium

  • Memorial Hospital East

    Shiloh, Illinois, 62269, United States

  • Siteman Cancer Center - North County

    Florissant, Missouri, 63031, United States

  • Siteman Cancer Center - Shiloh

    Shiloh, Illinois, 62269, United States

  • Siteman Cancer Center - South County

    St Louis, Missouri, 63129, United States

  • Siteman Cancer Center - St Peters

    City of Saint Peters, Missouri, 63376, United States

  • Siteman Cancer Center - West County

    Creve Coeur, Missouri, 63141, United States

  • Stanford Women's Cancer Center

    Palo Alto, California, 94304, United States

  • UCHealth - Medical Center of the Rockies

    Loveland, Colorado, 80538, United States

  • UCHealth Greeley Hospital

    Greeley, Colorado, 80634, United States

  • UCHealth Harmony

    Fort Collins, Colorado, 80528, United States

  • UCHealth Poudre Valley Hospital

    Fort Collins, Colorado, 80524, United States

  • Washington University School of Medicine - Siteman Cancer Center

    St Louis, Missouri, 63110, United States

Conditions

Explore the condition pages connected to this study.