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Hormone study aims to unlock Prader-Willi feeding mystery

NCT ID NCT02529085

Knowledge-focused Sponsor: University Hospital, Toulouse 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study looked at how appetite-regulating hormones change in infants with Prader-Willi syndrome during the first four years of life. Researchers collected blood samples from 215 infants to understand why they switch from poor feeding to severe overeating and obesity. The goal is to identify the underlying causes and pave the way for future treatments.

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 explain why children with Prader-Willi syndrome go from poor feeding to severe overeating, pointing toward future treatments.
What could go wrong
This is an observational study, not a treatment trial. It may not directly lead to therapies, and results may not apply to all patients.

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

215 people

The number who actually took part.

Started

Mar 2013

Finished

Jun 2017

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

Up to 18 years

Sex

Anyone

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 (PWS infants cohort) * Genetic diagnosis of Prader-Willi syndrome Exclusion Criteria (PWS infants cohort) * none Inclusion Criteria (control group) * children hospitalized for a planned surgery for malformation, orthopaedic or visceral surgery Exclusion Criteria (control group) * children with endocrine disorder

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Conditions

The condition(s) this trial relates to.

Prader-Willi syndrome

As listed by the trial registrant

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

Prader-Willi syndrome

Contacts and locations

Locations

  • Department of Endocrinology / University Children's Hospital

    Essen, Germany

  • Department of Pediatrics / Division of Endocrinology

    Toulouse, Haute-Garonne, 31000, France

  • Department of Pediatrics / Division of Endocrinology / Erasmus University Medical Center / Sophia Children's Hospital Rotterdam

    Rotterdam, 3015 GJ, Netherlands

  • Karolinska University Hospital

    Stockholm, Sweden

  • Metabolic & Molecular Imaging Group / MRC Clinical Sciences Centre / Imperial College London / Hammersmith Hospital

    London, W12 0NN, United Kingdom

  • Unité d'Endocrinologie Pédiatrique / Université Catholique de Louvain

    Brussels, 1200, Belgium

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