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Trial record 2 of 22 for:    Recruiting, Not yet recruiting, Active, not recruiting, Enrolling by invitation Studies | Rett Syndrome

Patients With RETT Syndrome (RETT)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04014985
Recruitment Status : Not yet recruiting
First Posted : July 10, 2019
Last Update Posted : July 10, 2019
Information provided by (Responsible Party):
Assistance Publique Hopitaux De Marseille

Brief Summary:
It was proposed to the French Association of Rett Syndrome (AFSR) to perform an extensive biological assessment in a series of 100 girls with Rett's syndrome and carriers of a mutation in the MECP2 gene in order to confirm or confirm to reverse the abnormalities identified previously and possibly, to highlight new biomarkers of the pathology. The analysis will focus on classical hematological criteria, iron markers, endocrine assays, lipid quantification and markers of inflammation. At the end of the project, each family will receive the complete biological assessment carried out on their daughter which will represent a direct benefit of the implication in this clinical research project.

Condition or disease Intervention/treatment Phase
Rett Syndrome Other: An extensive biological assessment Not Applicable

Detailed Description:

The MECP2 (Methyl-CpG binding protein) gene, located on the X X28 chromosome, encodes a heterochromatin nuclear protein. Mecp2 is preferentially found in neurons at a postmitotic stage where it promotes brain development. Its ability to fix methylated DNA and contribute to the formation of a transcriptional repression complex attributes this protein to a crucial role in the control of gene expression. However, until today, its exact role is not known. In humans, mutations in the MECP2 gene are at the origin of neurological diseases, the main one being Rett's syndrome (RTT-MIM # 312750) where a mutation of MECP2 is found in 95% of cases. This dominant pathology linked to the X chromosome has a prevalence of 1/10000 to 1/15000 births and affects mostly girls. The course of the pathology is characterized by a cessation of development between 6 and 18 months after birth. Patients present a set of characteristic signs including regression of acquired abilities, manual stereotyping, loss of language, behavioral disorders and severe intellectual disability. In their attempt to better understand the pathology, many laboratories are currently trying to identify abnormal biological parameters in patients that are easy to identify in a non-invasive or minimally invasive way in order to indirectly evaluate the progression of the pathology and to identify biochemical disorders amenable to direct pharmacological intervention.

In autumn 2015, several factors were identified as deregulated in model mice or RTT patients (Rett syndrome). They could be related to the severity of the disease and indicators of its progression. Among these we can mention:

  • major structural damage to red blood cells;
  • Inflammation demonstrated and challenged ;
  • high oxidative stress markers; lipid deregulation and in particular cholesterol abnormalities;
  • a deficiency of the signaling pathway of insulin and IGF-1.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 100 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Study of Biological Parameters in 100 Girls With RETT Syndrome
Estimated Study Start Date : September 1, 2019
Estimated Primary Completion Date : October 1, 2019
Estimated Study Completion Date : October 1, 2020

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Rett Syndrome

Arm Intervention/treatment
Girls with RETT syndrome
100 girls over 18 years old with RETT syndrome
Other: An extensive biological assessment
To study the morphology of red blood cells, the markers of oxidative stress and the signaling pathway of IFGF1.

Primary Outcome Measures :
  1. Comparison of red blood cell morphology [ Time Frame: 1 day ]
    Identification of abnormal red blood cells

  2. Comparison of oxydative stress markers [ Time Frame: 1 day ]
    Identification of abnormally high cytokine levels

  3. Comparison of cholesterol levels [ Time Frame: 1 day ]
    Identification of hight cholesterol levels

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • People with Rett syndrome related to MECP2 gene mutation
  • Aged under 18 years old.
  • Regularly followed as part of their illness by Prof. Bahi-Buisson in Necker or Pr Milh in Marseille.
  • Whose state of health justifies a blood test (dosage of one or more anti-epileptics, recommended annual phosphocalcic balance, pre-therapeutic assessment before introduction of a new molecule ...)
  • Whose at least one parent (or legal representative) has signed the consent
  • Patient fasting for 6 hours at the time of sampling.

Exclusion Criteria:

  • Contraindication to a balance sheet
  • Absence of consent of the legal representatives

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04014985

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Contact: DRS AP-HM

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Assistance Publique Hopitaux de Marseille
Marseille, France, 13354
Contact: Mathieu Milh    0491386807   
Sponsors and Collaborators
Assistance Publique Hopitaux De Marseille
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Study Director: Jean-Olivier ARNAUD Assistance Publique Hôpitaux de Marseille
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Responsible Party: Assistance Publique Hopitaux De Marseille Identifier: NCT04014985    
Other Study ID Numbers: 2018-30
2018-A01066-49 ( Registry Identifier: ANSM )
First Posted: July 10, 2019    Key Record Dates
Last Update Posted: July 10, 2019
Last Verified: July 2019

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Rett Syndrome
Pathologic Processes
Mental Retardation, X-Linked
Intellectual Disability
Neurobehavioral Manifestations
Neurologic Manifestations
Nervous System Diseases
Genetic Diseases, X-Linked
Genetic Diseases, Inborn
Heredodegenerative Disorders, Nervous System