New hope for Hard-to-Treat breast cancer: drug combo targets resistant tumors

NCT ID NCT07340619

First seen Jun 27, 2026 · Last updated Aug 04, 2026 · Updated 2 times

Summary

This study tests a new drug, prifetrastat, combined with fulvestrant for people with advanced HR+/HER2- breast cancer that has stopped responding to standard hormone therapy and CDK4/6 inhibitors. About 51 participants will receive the combination to see if it can shrink tumors or slow cancer growth. The goal is to control the disease, not cure it, as ongoing treatment is needed.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Centre Antoine Lacassagne

    Nice, France

  • Centre Eugene Marquis

    Rennes, France

  • Centre Leon Berard

    Lyon, France

  • Institut Bergonie

    Bordeaux, France

  • Institut Curie

    Paris, France

  • Institut Paoli Calmettes

    Marseille, France

  • Institut de Cancerologie de L'Ouest

    Saint-Herblain, France

  • Oncopole Claudius Regaud

    Toulouse, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.