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Can your genes predict breast cancer treatment success?

NCT ID NCT04638725

Knowledge-focused Sponsor: Centre Paul Strauss 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 aims to find genetic markers that may explain why some HER2-positive breast cancer patients respond well to treatment while others do not, or experience side effects. Researchers will collect blood samples from 9,000 participants and follow them for five years. The goal is to better understand treatment resistance and sensitivity, not to test a new 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.

Participants

About 9,000 people

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

Started

Dec 2021

Expected to finish

Dec 2033

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-positive Breast Cancer

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.

For inclusion in the study, patients must be affiliated to the national or local social security, and must meet all the following criteria: Inclusion Criteria: * Age ≥ 18 years * Histological diagnosis of breast adenocarcinoma. Non-metastatic and operable. * Current or prior treatment with one therapy targeting HER2 in adjuvant or neoadjuvant phase for the current breast cancer * Given written informed consent Exclusion Criteria: * Patients not able to comply to the protocol assessments for geographic, social or psychological reasons * Patients placed under judicial protection, guardianship, or supervision * History of cancer in the 5 years preceding anti-HER2 therapy initiation * Concomitant cancer (except for an other non metastatic cancer treated only with surgery) Note : Patients are eligible at any time of the follow-up if the adjuvant or neoadjuvant chemotherapy started after 01/01/2019. Patients treated with trastuzumab, pertuzumab, neratinib or T-DM1 in a clinical trial are eligible in the SIGHER study.

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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

  • Institut de cancérologie Strasbourg Europe

    RECRUITING

    Strasbourg, 67033, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.