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Scientists hunt for clues to breast cancer treatment resistance

NCT ID NCT06518382

Knowledge-focused Sponsor: Giampaolo Bianchini 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study examines tumor samples from 10 people with HER2-positive breast cancer who still had cancer after standard chemotherapy and trastuzumab. Researchers compare tissue taken before and after treatment to identify markers of resistance. No new treatments are given; the goal is to better understand why some cancers don't respond.

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.

Participants

About 10 people

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

Started

Dec 2024

Expected to finish

Aug 2027

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.

Who is studied

HER2+ Breast Cancer patients displaying residual invasive disease in the breast/lymph node at surgery after neo-adjuvant treatment \[sequential chemotherapy comprising treatment with antracyclines (AC/EC q21, 4 cycles) followed by taxanes (paclitaxel 1,8,15 q21 for 12 weeks) in combination with the anti-HER2 antibody trastuzumab\].

Ages

18 years and older

Sex

Female participants only

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: 1. Participant is willing and able to give informed consent for participation in the study. 2. Patient underwent the following procedure before surgery: biopsy, sequential chemotherapy comprising treatment with antracyclines (AC/EC q21, 4 cycles) followed by taxanes (paclitaxel 1,8,15 q21 for 12 weeks) in combination with the anti-HER2 antibody trastuzumab. 3. Specimen collected at surgery display residual invasive disease in the breast/lymph node. Exclusion Criteria: 1. pre-existing conditions or concurrent diagnoses; 2. concomitant use of other medications during neo-adjuvant treatment; 3. quality of stored specimen does not meet the standard for Imaging Mass Cytometry analysis.

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Conditions

The condition(s) this trial relates to.

HER2 positive breast carcinoma

As listed by the trial registrant

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

HER2-positive breast cancer

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

  • IRCCS San Raffaele Hospital

    RECRUITING

    Milan, Lombardy, 20132, Italy

More trials for these conditions

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