New SPECT scans could spot aggressive breast cancer without biopsy

NCT ID NCT05376644

First seen Jun 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This study tests two new radioactive imaging agents, 99mTc-ADAPT6 and 99mTc-DARPinG3, to see how well they can detect HER2-positive breast cancer using SPECT scans. Fifteen women with HER2-positive breast cancer will receive injections of each agent a few days apart, followed by imaging. The goal is to compare the imaging results with standard biopsy tests to determine if these agents can accurately identify HER2 status non-invasively before chemotherapy or targeted therapy begins.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
99mTc-ADAPT6 and 99mTc-DARPinG3
What this could lead to
If successful, these imaging agents could provide a non-invasive way to detect HER2-positive breast cancer, potentially guiding treatment decisions without needing a biopsy.
What could go wrong
This is a small, early-phase study with only 15 participants, so results may not apply to all patients. The imaging agents are experimental and their accuracy compared to standard methods is not yet proven.

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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

  • Tomsk NRMC

    Tomsk, 634005, Russia

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