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

NCT ID NCT07340619

First seen Jun 27, 2026 · Last updated Jun 27, 2026

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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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

estrogen-receptor positive breast cancer melanoma metastatic melanoma Neoplasm Metastasis

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Centre Antoine Lacassagne

    Nice, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Centre Eugene Marquis

    Rennes, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Centre Leon Berard

    Lyon, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Institut Bergonie

    Bordeaux, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Institut Curie

    Paris, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Institut Paoli Calmettes

    Marseille, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Institut de Cancerologie de L'Ouest

    Saint-Herblain, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Oncopole Claudius Regaud

    Toulouse, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••