Blood test catches cancer early; drug aims to stop return
NCT ID NCT07292207
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether monitoring tumor DNA in the blood (ctDNA) and treating with abemaciclib can prevent breast cancer from coming back. 30 people with HR+/HER2- breast cancer who have finished standard treatment will be followed. If ctDNA is detected, they will receive abemaciclib to try to clear it and stop recurrence.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jan 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2031
An estimate. End dates often move.
- 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.
- Ages
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18 years and older
- Sex
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Anyone
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Histologically confirmed invasive breast cancer. * ctDNA-positive after completion of definitive local/systemic therapy. * Definitive breast surgery performed; axillary node status confirmed. * HR-positive, HER2-negative disease. * Tumor and nodal status meet predefined pathological risk criteria. * ECOG PS 0 - 1. * No bilateral breast cancer. * Adequate recovery from prior therapy and acceptable organ function. * No distant metastasis before registration. * Appropriate contraception; informed consent obtained. Exclusion Criteria: * Active second malignancy. * Prior CDK4/6 inhibitor use. * Recent major surgery or active infection. * Uncontrolled hypertension or significant cardiac disease. * Recent thromboembolic events. * Interstitial lung disease or active pneumonitis. * Unrecovered toxicities from prior treatment. * Active HIV, HBV, or HCV infection. * Pregnancy or breastfeeding.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Nagoya City University
Nagoya, Japan
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Other studies related to the condition(s) this trial covers.
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