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New study tracks insulin changes across periods in women with type 1 diabetes

NCT ID NCT06282055

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study aims to understand how insulin sensitivity and blood sugar levels change across menstrual cycles in women with type 1 diabetes. Researchers will track 350 women aged 18-40 who have regular periods and use automated insulin delivery systems. The goal is to identify patterns that could help personalize diabetes care.

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 350 people

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

Started

Nov 2025

Expected to finish

Sep 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

People with menstrual cycles living with Type 1 Diabetes who are using a hybrid closed-loop system.

Ages

18 to 40 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: * Female sex * Between 18 and 40 years at inclusion * Menarche at least one year prior to study inclusion * Regular menstrual cycle (at least one menstrual cycle in the last 40 days) * Average menstrual cycle length between 21 and 38 days * Difference in length between consecutive menstrual cycles of at most 7 days * Living with type 1 diabetes or latent autoimmune diabetes in adults (LADA) for at least one year * Actively using an AID system for their diabetes management at least six months prior to study inclusion Exclusion criteria: * Regular hormonal intake (e.g. corticosteroids), except: insulin, stable thyroid substitution, and hormonal contraception * Pregnancy until two months postpartum (ongoing or planned) * Current breastfeeding (including pumping), as well as two months following complete cessation of breastfeeding and pumping * Known Polycystic Ovary Syndrome (PCOS) * Intake of glucocorticoid medication, agents affecting gastric emptying, oral anti-diabetic agents (Metformin) or SGLT-2 inhibitors or GLP-1-analogs * Individuals with work patterns involving frequent shifts between night and day work (e.g., alternating night and day shifts on a weekly or similar basis). * Participation in an interventional study within two months preceding and during the present study

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Conditions

The condition(s) this trial relates to.

Insulin Resistance latent autoimmune diabetes in adults type 1 diabetes mellitus type 1 diabetes mellitus 1

As listed by the trial registrant

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

Diabetes mellitus, type 1

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

  • DCB Research AG

    RECRUITING

    Bern, 3010, Switzerland

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