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Can your body clock predict return of periods after chemo?

NCT ID NCT05007834

Knowledge-focused Sponsor: University Hospital, Lille Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows 50 women aged 25-35 who lost their periods after breast cancer chemotherapy. Researchers will measure blood markers, physical activity, and sleep patterns to see if these factors are linked to when menstruation returns. The goal is to better understand why some women recover ovarian function quickly while others do not.

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 help doctors better predict which women will recover ovarian function after chemotherapy, guiding fertility counseling.
What could go wrong
This is a small observational study (50 participants) that only looks for associations, not a treatment. Results may not apply to other chemotherapy regimens or age groups.

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 50 people

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

Started

Feb 2022

Expected to finish

Jun 2026

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 a chemotherapy-induced (CIA) amenorrhea who asked for post-cancer fertility follow-up at the University Hospital of Lille, France.

Ages

25 to 35 years

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: * Women with a chemotherapy-induced (CIA) amenorrhea who asked for post-cancer fertility follow-up at the University Hospital of Lille, France. * Women between 25 to 35 years age at inclusion * Chemotherapy protocol: FEC 100 (3 cycles) + docetaxel (3 cycles Exclusion Criteria: * Women without CIA * Women who refuse to participate in the study * Women older than 35 years at inclusion * Women who received another chemotherapy protocol

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Conditions

The condition(s) this trial relates to.

breast cancer

As listed by the trial registrant

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

Chemotherapy-induced amenorrhea

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

  • Hop Jeanne de Flandre Chu Lille

    RECRUITING

    Lille, France

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