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Blood test may help personalize breast cancer therapy

NCT ID NCT07394218

Disease control Sponsor: Fudan University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a blood test that tracks tumor DNA (ctDNA) can help doctors decide when to intensify treatment for HER2-negative metastatic breast cancer. All 122 participants start with antibody-drug conjugate (ADC) therapy. After two cycles, those whose disease hasn't worsened are split into groups based on how much their ctDNA levels dropped, with some getting additional immunotherapy. The goal is to see if this personalized approach improves outcomes.

What this could mean

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

Active substance
Antibody-drug conjugate (ADC) therapy (sacituzumab govitecan or trastuzumab deruxtecan) with or without ivonescimab
What this could lead to
If successful, this could show that monitoring ctDNA levels helps doctors personalize treatment, potentially improving outcomes for people with metastatic breast cancer.
What could go wrong
This is a small, early-phase study (122 people) focused on a biomarker, not a direct treatment comparison. The approach may not improve survival or could add side effects from extra therapy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 122 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2025

Expected to finish

Dec 2028

An estimate. End dates often move.

Lead sponsor

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

18 to 75 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 18-75 years；ECOG performance status 0-1； Histologically or cytologically confirmed HER2-negative metastatic breast cancer； At least one measurable lesion per RECIST v1.1； Eligible for ADC therapy； Adequate organ and bone marrow function； Life expectancy ≥3 months； Willingness to provide tumor tissue and blood samples； Signed informed consent Exclusion Criteria: * Prior treatment with ADC targeting the same antigen and payload；History of grade ≥3 immune-related adverse events； Active or untreated CNS metastases； Active autoimmune disease requiring systemic therapy； Clinically significant cardiovascular disease； Active interstitial lung disease； Active infection including tuberculosis, HIV, hepatitis B or C； Pregnancy or breastfeeding；Investigator-determined conditions that may interfere with study participation

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Conditions

The condition(s) this trial relates to.

breast neoplasm Her2-receptor negative breast cancer

As listed by the trial registrant

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

CTDNA Metastatic breast cancer ( HER2 negative)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Fudan University Shanghai Cancer Center

    RECRUITING

    Shanghai, Shanghai Municipality, 200032, China

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