Syndrome de Myt1l: un syndrome génétique pédiatrique rare responsable d'un trouble neurodéveloppemental (MYT1L)
Caractérisation des troubles du langage et de la prosodie, du fonctionnement cognitif et des problèmes de comportement dans le syndrome de Myt1l
MYT1L syndrome is a rare genetic syndrome, recently described in 2011, with paediatric onset, responsible for a neurodevelopmental disorder combining psychomotor retardation, learning difficulties and/or intellectual development disorders, epilepsy, overweight and eating disorders. The Rouen genetics department is currently positioned as a clinical expert in this disease.
The study published in 2020 by our team (Coursimault J et al., Hum Genet. 2022, PMID: 34748075) has enabled us to describe 40 new individuals worldwide, to gain a better understanding of this disease, to specify the genotype-phenotype relationships and to describe new clinical signs. We were able to confirm the presence of a neurodevelopmental disorder in 100% of patients, which includes: language delay, impaired orality, global and facial hypotonia, prosodic features and behavioural problems. This will be the first study in the world to characterise the neuropsychological, language and prosodic profiles of MYT1L patients.
Aperçu de l'étude
Statut
Les conditions
Description détaillée
Although neuropsychological and speech therapy assessment is part of the routine work-up of any patient with a neurodevelopmental disorder, the heterogeneous use of assessment scales has not made it possible to obtain a precise characterisation of the neuropsychological and language profile of patients with MYT1L syndrome in retrospective studies. As a result, it is not possible to establish specific language and behavioural rehabilitation treatments. The aim of the study is to provide substantiated information on language (oral language, speech), prosody (reception and expression) and cognitive-behavioural aspects (global IQ, executive functions, sensory profile, attention, aggression, intolerance to frustration, anxiety). This project proposes to carry out a protocol used in routine care to assess language, prosody, cognitive functions and mood disorders, with the aim of identifying a specific language, prosody, cognitive and behavioural profile of patients with MYT1L syndrome, which could lead to better assessment in the future, screening for disorders and better targeting of rehabilitation in future patients, and to identify profiles suggestive of MYT1L syndrome in patients who have not had genetic confirmation (no variation identified or variation of uncertain significance).
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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Rouen, France, 76031
- University Hospital of Rouen
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
MYT1L Group Patients
- Minimum age for inclusion: 6 years
- Maximum age for inclusion: no upper age limit
- Language: French
- Consent of parents or legal guardian
- Social security coverage required
Prosody Group Patients
- Unaided visual or hearing impairment making assessments impossible
- Non-French speaking patients
- Patients with a dual molecular genetic diagnosis also causing a neurodevelopmental disorder
- Acquired neurological disorder
Exclusion Criteria:
MYT1L Group patients
- Unaided visual or hearing impairment making assessments impossible
- Non-French speaking patients
- Patients with a dual molecular genetic diagnosis also causing a neurodevelopmental disorder
- Acquired neurological disorder
Prosody Group Patients
- Patients with molecularly confirmed MYT1L syndrome.
- Nonverbal patients
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Non randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Expérimental: MYT1L Arm
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Comparateur actif: Control Arm
Consisting of verbally communicative patients with another genetically determinded neurodevelopmental disorder that has been confirmed at the molecular level. |
Evaluation de la prosodie par l'orthophoniste (45 minutes) |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Speech-language profile
Délai: At enrollment visit
|
Evaluation of the neuropsychological profile during an interview with the neuropsychologist allowing the administration of standardized tests completed with the patient and through questionnaires completed by the family |
At enrollment visit
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Speech-language profile
Délai: At enrollment visit
|
Assessment of the language profile through standardized tests completed with the patient during the interview with the speech therapist and questionnaires completed by the family |
At enrollment visit
|
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Prosodic speech therapy profile (patients with MYT1L syndrome)
Délai: At enrollment visit
|
Evaluation of the prosodic profile of patients with MYT1L syndrome by voice recordings |
At enrollment visit
|
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Prosodic speech therapy profile (patients with a molecular diagnosis other than MYT1L)
Délai: At enrollment visit
|
Evaluation of the prosodic profile of patients with a molecular diagnosis other than MYT1L by voice recordings |
At enrollment visit
|
Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Autres numéros d'identification d'étude
- 2024/0255/HP
- 2024-A02492-45 (Autre identifiant: ANSM)
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
The data provided will be the property of the sponsor and will be used solely for its own research activities.
Informations sur les médicaments et les dispositifs, documents d'étude
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