Brain Olfactory Pathways in Prader-Willi Syndrome

NCT ID: NCT07006207

Last Updated: 2025-06-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-06-23

Study Completion Date

2025-12-31

Brief Summary

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Studying the cerebral activity of children with Prader-Willi Syndrom (PWS) when the study propose to them nasal activations.

Detailed Description

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The present study propose to implement fMRI and olfactory tests to describe olfactory brain activation and olfactory skills in early OT-exposed and non-exposed children with PWS.

This study is part of a wider project in collaboration with the team of S. Steculorum at the Max Planck Institute in Germany who assess the architectural and molecular characterization of the olfactory system development in a mice model of PWS and the role of early OT treatment.

Moreover, the study will take advantage of the MRI to document the long-term brain connectivity of early OT-exposed and non-exposed children.

Conditions

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Prader-Willi Syndrome

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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OT exposed patients

children OT exposed have olfactory test and fMRI

Group Type EXPERIMENTAL

olfactory stimulation

Intervention Type OTHER

the patients have a sniff-test

functional MRI

Intervention Type OTHER

patients have a an f MRI

OT non exposed patients

children non- OT exposed have olfactory test and fMRI

Group Type ACTIVE_COMPARATOR

olfactory stimulation

Intervention Type OTHER

the patients have a sniff-test

functional MRI

Intervention Type OTHER

patients have a an f MRI

Interventions

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olfactory stimulation

the patients have a sniff-test

Intervention Type OTHER

functional MRI

patients have a an f MRI

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* child with a genetically confirmed diagnosis of PWS and for whom the genetic subtype (deletion or non deletion) has been identified
* Child aged between 5 and 7 years
* Child with a planned hospitalization at the Toulouse reference center for PWS

Exclusion Criteria

* Presence of a contraindication to MRI
* Allergy to any of the fragrances used in the olfactory test
* Presence of an ENT infection such as rhinitis or sinusitis on the day of inclusion
* Reported anosmia
* Administrative problems.
Minimum Eligible Age

5 Years

Maximum Eligible Age

7 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Institut National de la Santé Et de la Recherche Médicale, France

OTHER_GOV

Sponsor Role collaborator

University Hospital, Toulouse

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Gwenaelle DIENE, MD

Role: PRINCIPAL_INVESTIGATOR

University Hospital of Toulouse

Locations

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University Hospital

Toulouse, , France

Site Status

Countries

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France

Central Contacts

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Julie CORTADELLAS

Role: CONTACT

0534557635

Nadege ALGANS

Role: CONTACT

0561777204

Facility Contacts

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Gwenaelle DIENE, MD

Role: primary

Other Identifiers

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RC31/23/0653

Identifier Type: -

Identifier Source: org_study_id

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