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Healthy women's immune cells mapped for future disease research

NCT ID NCT05609799

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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at the different types of immune cells in the blood of 40 healthy Danish women aged 18-41. The goal was to create a reference for normal immune cell levels in women of reproductive age. This information will help future studies understand how the immune system affects diseases in this group.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

40 people

The number who actually took part.

Started

Nov 2022

Finished

Feb 2023

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 41 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.

Inclusion Criteria: * \- Healthy women of fertile age (18-41 years) with a regular menstrual cycle (22-35 days) who are in the luteal phase of their menstrual cycle at the time collecting the blood sample (day 20 to 28 of cycle and serum progesterone \> 20 nmol/l at the day of blood sample). The group should consist of an approximately 1:1 ratio of women with ≥1 previous liveborn child and women with no previous pregnancy. Exclusion Criteria: * \< 18 years old or \>41 years old * History of ≥1 known pregnancy loss including both spontaneous and missed abortions. An induced abortion is accepted if it was performed more than 2 years before study participation. * Pregnancy within last 6 months * Treatment with drugs acting on the immune system or hormonal contraceptive drugs either acting systemically or locally (intrauterine device releasing progesterone). * Known disease with influence on the immune system and/or endocrine system * Previously received a blood transfusion

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As listed by the trial registrant

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

Contacts and locations

Locations

  • • The Centre for Recurrent Pregnancy Loss of Western Denmark, Department of Obstetrics and Gynaecology, Aalborg University Hospital,

    Aalborg, 9000, Denmark

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