Breast cancer surgery omission trial halted early

NCT ID NCT04578106

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

Summary

This study looked at whether women with a certain type of early-stage breast cancer (HER2-positive, low-risk) could avoid surgery if their tumors completely disappeared after standard drug treatment. Only 5 women enrolled before the study was stopped. The goal was to see if a special breast biopsy and MRI could reliably confirm no cancer remained, allowing surgery to be skipped. Because the study ended early, we don't have clear answers on safety or long-term outcomes.

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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

  • Hospital Clinic de Barcelona

    Barcelona, Barcelona, 08036, Spain

More trials for these conditions

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