- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05149469
Molecular Aspects of Preimplantation Genetic Diagnosis for NF1 (NF1)
Evaluation of Preimplantation Genetic Diagnosis for Neurofibromatosis Type 1 (NF1), Emphasizing on the Molecular Aspects
Neurofibromatosis 1 (NF1) is a multisystem disorders characterized by skin abnormalities, such as café-au-lait spots and neurofibromas, learning disabilities, skeletal anomalies and vascular complications. Experience learns that this disorder is a great burden for patients. NF1 is an autosomal dominant disorder with 50% risk of transmission. The penetrance is nearly 100%, but the expression varies greatly even within families, which makes it nearly impossible to predict severity in offspring. Preimplantation genetic diagnosis (PGD) is a reproductive option for couples at risk of transmitting NF1 to their offspring. We perform a retrospective and observational multicentric study in the Maastricht University Medical Center, the University Hospital of Brussel and Strasbourg University Hospital. Our specific (and first) goal is to evaluate the molecular aspects of PGD for NF1 in an international cohort of couples requesting PGD for NF1.
About 50% of the patients with NF1 have a de novo mutation that can complicate development of a PGD test. Earlier studies from 1990 and 1992 have shown that de novo NF1 mutations usually occur on the paternal allele. We want to confirm these findings with collected data from our cohort. The high incidence of de novo mutations results in a higher chance of finding mosaicism in patients or their parents. As a result of this, it can become apparent during PGD test preparation that PGD treatment is no longer possible or indicated. The investigators will evaluate these aspects of PGD for NF1 in our cohort.
They are also interested, as a second goal, in other aspects of PGD treatment for NF1, such as the success rate in thier cohort. They expect the success rate to be the same as for other autosomal dominant disorders
Study Overview
Status
Conditions
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Céline MOUTOU, MD
- Phone Number: 33 3.69.55.34.65
- Email: celine.moutou@chru-strasbourg.fr
Study Locations
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Strasbourg, France, 67091
- Recruiting
- Service Laboratoire de Diagnostic Génétique - Hôpitaux Universitaires de Strasbourg
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Contact:
- Céline MOUTOU, MD
- Phone Number: 33 3.69.55.34.65
- Email: celine.moutou@chru-strasbourg.fr
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Sub-Investigator:
- Julia LAUER ZILLHARDT, MD
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion criteria:
- Major subjects (≥18 years old)
- Couples who have been treated at the HUS for a preimplantation diagnosis request for type 1 neurofibromatosis (confirmed by a molecular molecular analysis) and who have benefited from preliminary analyzes, between 01/01/2004 and 30/06 / 2021
- Couple who, after receiving information, did not express their opposition to the reuse of their data for the purposes of this research
Exclusion criteria:
- Couples who expressed their opposition to participating in the study
- Subject under guardianship, curatorship or safeguard of justice
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
- Time Perspectives: Retrospective
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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Study of the molecular aspects of PGD for NF1 in a large European cohort.
Time Frame: Files analysed retrospectively from from January 1, 2004 to June 30, 2021 will be examined]
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Files analysed retrospectively from from January 1, 2004 to June 30, 2021 will be examined]
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Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Nervous System Diseases
- Neoplasms by Histologic Type
- Neoplasms
- Genetic Diseases, Inborn
- Neuromuscular Diseases
- Neurodegenerative Diseases
- Neoplasms, Nerve Tissue
- Peripheral Nervous System Diseases
- Nervous System Neoplasms
- Heredodegenerative Disorders, Nervous System
- Neoplastic Syndromes, Hereditary
- Nerve Sheath Neoplasms
- Neurocutaneous Syndromes
- Peripheral Nervous System Neoplasms
- Neurofibromatoses
- Neurofibromatosis 1
- Neurofibroma
Other Study ID Numbers
- 8374
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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