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Study tracks fertility and pregnancy in young breast cancer survivors

NCT ID NCT06756802

Knowledge-focused Sponsor: Institut Cancerologie de l'Ouest Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looks at fertility, pregnancy, and contraception in women diagnosed with breast cancer between ages 18 and 50. Researchers will collect data from 22,000 patients to understand how cancer treatments affect their ability to have children and the health of their newborns. The goal is to improve future recommendations and care for young breast cancer survivors.

What this could mean

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

What this could lead to
If successful, this could lead to better guidelines for fertility preservation and safer pregnancy planning after breast cancer treatment.
What could go wrong
This is an observational study, so it won't test a new treatment. Results may not apply to all patients or change practice directly.

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 22,000 people

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

Started

Dec 2025

Expected to finish

Jul 2029

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

Women with Breast cancer / Women not diagnosed with breast cancer

Ages

18 to 50 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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.

Exposed cohort (Breast cancer patient) Inclusion Criteria: * Patients aged between 18 and 50 at the time of diagnosis of breast cancer * Diagnosed with stage 1 to 3 breast cancer between 01/01/2010 and 31/12/2018 * Patients treated in one of the identified ConSoRe partner centres (CLB, ICO, COL, IC) Exclusion Criteria: * Diagnosis of metastatic breast cancer (stage 4) * Patients opposed to the use of their data for research purposes Unexposed cohort (data from the SNDS) : Population derived from the SNDS, among women not diagnosed with breast cancer, of the same ages (same year of birth) and the same geographical area (same département of residence) as the exposed population.

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm

As listed by the trial registrant

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

Breast cancer

Contacts and locations

Locations

  • Centre Leon Berard

    Lyon, 69000, France

  • Centre Oscar Lambret

    Lille, 59000, France

  • Institut Curie

    Paris, 75000, France

  • Institut de Cancerologie de L'Ouest

    Saint-Herblain, 44805, France

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