RecruitingPhase 3NCT05032326

Long-term Interventional Follow-up Study of Children With Prader-Willi Syndrome Included in the OTBB3 Clinical Trial

Long-term Interventional Follow-up Study up to 4 Years of Age of Children With Prader-Willi Syndrome Included in the OTBB3 Clinical Trial and Comparison With an Untreated Cohort of Children With Prader-Willi Syndrome


Sponsor

University Hospital, Toulouse

Enrollment

80 participants

Start Date

Sep 7, 2021

Study Type

INTERVENTIONAL

Conditions

Summary

This study is a prospective, multicentre, interventional cohort study in children with Prader-Willi Syndrome (PWS) over 4 years (no treatment administered). The duration of the preceding OTTB3 study is 26 weeks. An untreated cohort of children with PWS will be included at an age of 2 years and followed up until an age of 4 years. Regarding the untreated cohort, children with PWS born in France and too old to be recruited in OTBB3 trial, principally those who were born within one year before the start of OTBB3 trial, will be offered to participate in this study. Infants born later who couldn't be included in OTBB3 study will be also offered to participate.


Eligibility

Min Age: 12 MonthsMax Age: 36 Months

Inclusion Criteria4

  • Male or female child with a genetically confirmed diagnosis of PWS (patients can be enrolled if the genetic subtype is not available at inclusion, but the genetic subtype needs to be confirmed during the study);
  • The parents (or legal representative) must have signed the consent form;
  • Treated cohort: the child participated in the OTBB3 study and is aged 16±4 months at inclusion,
  • Untreated cohort: the child has never received OT, is aged 30±6 months at inclusion (in order to maximise the number of children in the untreated cohort) and is followed in France.

Exclusion Criteria4

  • Administrative problems:
  • Inability for the parents (or legal representative) to understand/fulfil study requirements;
  • No coverage by a social security regime;
  • Refusal of parents (or legal representative) to sign the consent form;

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Interventions

DRUGFollow-up study of the treated cohort

follow-up study of the patients in the treated cohort: that have been included in the otbb3 study

OTHERFollow-up study of the untreated cohort

follow-up study of the patients in the untreated cohort: that have NOT been included in the otbb3 study


Locations(12)

Hôpital Femme Mère Enfant

Bron, France

CHU Dijon Hôpital des Enfants

Dijon, France

CHU de Grenoble

Grenoble, France

Hôpital Jeanne de Flandre

Lille, France

Hôpital de la Timone Enfant

Marseille, France

CHU Nancy

Nancy, France

CHU Nantes

Nantes, France

Hôpital CHU-Lenval

Nice, France

Groupe Hospitalier Necker - Enfants Malades

Paris, France

CHU Rennes

Rennes, France

CHU Rouen

Rouen, France

Centre de réfrence Prader-Willi, Hospital of infants

Toulouse, France

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NCT05032326


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