Scientists Re-Analyze old samples to unlock secrets of HER2-Low breast cancer
NCT ID NCT07561346
First seen Jun 27, 2026 · Last updated Jul 24, 2026 · Updated 1 time
Summary
This study looked at tissue samples from 2751 early breast cancer patients who had already completed chemotherapy. Researchers wanted to see if tumors with low levels of HER2 protein are biologically different from those with no HER2 at all. They used genetic testing and protein analysis to compare the two groups. The goal is to better understand these cancers and guide future treatments.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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3,648 people
The number who actually took part.
- Started
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Dec 1996
- Finished
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Jul 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
patients with operable breast cancer treated with dds-CT including taxanes and anthracyclines. Adjuvant hormonal and radiation treatment were administered, as indicated
- Ages
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age 18 and above * Histologically confirmed BC * All treated with adjuvant dose-dense sequential chemotherapy (dds-CT) * Tumor tissue specimen (FFPE) availability Exclusion Criteria: * not adequate, and unsuitable tissue for IHC, FISH, NGS analysis
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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
-
Hellenic Cooperative Oncology Group (HeCOG)
Athens, 11526, Greece
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Other studies related to the condition(s) this trial covers.
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