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Trial record 7 of 7 for:    "Angelman syndrome"
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Genomic Imprinting and Assisted Reproductive Technologies (EPIGEN)

This study is currently recruiting participants.
Verified February 2011 by Assistance Publique - Hôpitaux de Paris
Sponsor:
Information provided by (Responsible Party):
Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier:
NCT00773825
First received: October 15, 2008
Last updated: July 25, 2012
Last verified: February 2011
History of Changes
  Purpose

Genomic imprinting, referring to an epigenetic marking resulting in monoallelic gene expression, plays a critical role in development. Recently, various imprinting diseases were reported in animals (Large Offspring syndrome (LOS)) and humans (Beckwith-Wiedemann syndrome (BWS) and Angelman syndrome (AS)) born after ART. In all cases, an imprinting defect was involved (loss of methylation at ICR2 in BWS, at SNRPN in AS and at IGF2R DMR2 in LOS). These data suggest that ART procedures may impair the establishment or the maintenance (following fertilization) of methylation marks at maternally imprinted loci. In view of these data, the aim of this study is to determine if children born following ART exhibit an increased risk of imprinting defects. If the answer is yes, the second objective is to identify the problematic step in the ART procedure and thus to suppress or modify this step.


Condition
Natural Pregnancy
Pregnancy, Ovarian

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Assessment of the Risk of Imprinting Defects in Children Born Following Assisted Reproductive Technologies (ART)

Resource links provided by NLM:

U.S. FDA Resources

Further study details as provided by Assistance Publique - Hôpitaux de Paris:

Primary Outcome Measures:
  • Assessment of the methylation status at 9 imprinted loci in cord blood collected just after birth. [ Time Frame: At the birth ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Assessment of other epigenetic marks (histone modifications) at imprinted loci and at non imprinted but epigenetically regulated loci. [ Time Frame: At the birth ] [ Designated as safety issue: No ]

Biospecimen Retention:   Samples With DNA

whole blood (serum, ADN) and placenta samples


Estimated Enrollment: 450
Study Start Date: February 2007
Estimated Study Completion Date: October 2014
Estimated Primary Completion Date: August 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts
1
Pregnancy after ICSI or IVF
2
Pregnancy after ovarian stimulation
3
natural pregnancy

Detailed Description:

Methodology: assessment of the methylation status at 9 different imprinted loci (using Southern blot and methyl-specific quantitative PCR) in 3 groups of patients: 150 children naturally conceived, 150 children conceived after ovarian stimulation but with in vivo fertilization, and 150 children conceived after ovarian stimulation and in VITRO fertilization. These analyses will be performed on cord blood. Fragments of placental tissue will also be collected for further analyses. Patients will be selected in maternity hospitals associated with ART departments ( ANTOINE BECLERE HOSPITAL, Cochin HOSPITAL, Saint-Vincent de Paul HOSPITAL, Jean VERDIER HOSPITAL, Tenon HOSPITAL and Dijon Hospital).

This work is also a unique opportunity to establish a DNA, RNA and tissue collection allowing further investigation regarding other epigenetic modifications than DNA methylation, not only at imprinted loci, but also in other genomic regions regulated by epigenetic modifications.

  Eligibility

Ages Eligible for Study:   26 Years to 40 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Women followed in a participating ART departments

Criteria

Inclusion Criteria:

Mother :

  • Age: 26 to 40 at conception
  • Single foetus pregnancy
  • Signed informed consent
  • Affiliation to French health benefits
  • Absence of maternal pathology
  • Normal foetal karyotype (if available)
  • Known procedure of ovarian stimulation
  • ART procedure without sperm or oocyte donation
  • ART in a participating ART departments
  • Delivery in a participating hospital

Father

  • Age : 18 to 50 at conception
  • Signed informed consent

Exclusion Criteria:

  • Abnormal foetal karyotype (if available)
  • Delivery before 35 weeks of amenorrhea
  • Delivery in not participating hospital
  • Delivery complication leading to the absence of sample collection
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00773825

Contacts
Contact: Yves LE BOUC, Professor +33(0) 1 44 73 64 47 yves.lebouc@trs.aphp.fr

Locations
France
Trousseau Hospital Recruiting
Paris, France, 75012
Contact: Yves Le Bouc, Professor         yves.lebouc@trs.aphp.fr    
Contact: Sylvie Rossignol, PhD, MD         sylvie.rossignol@trs.aphp.fr    
Principal Investigator: Yves Le Bouc, Professor            
Sponsors and Collaborators
Assistance Publique - Hôpitaux de Paris
Investigators
Principal Investigator: Yves Le BOUC, PUPH Assistance Publique - Hôpitaux de Paris
  More Information

Publications:

Responsible Party: Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier: NCT00773825     History of Changes
Other Study ID Numbers: P040440
Study First Received: October 15, 2008
Last Updated: July 25, 2012
Health Authority: France: Direction Générale de la Santé

Keywords provided by Assistance Publique - Hôpitaux de Paris:
Genomic imprinting
Reproductive techniques, assisted
Beckwith-Wiedemann syndrome
Angelman syndrome

Additional relevant MeSH terms:
Pregnancy, Ectopic
Pregnancy Complications

ClinicalTrials.gov processed this record on May 16, 2013