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A Study of the Genetic Analysis of Brain Disorders
NCT00645645 · View on ClinicalTrials.gov ↗
Study Summary
A study of the complex genetics of brain development will be undertaken with an emphasis on those genes that cause the most common structural brain anomaly in humans called holoprosencephaly (HPE). This malformation of the brain can result from either environmental or genetic causes, and it is the aim of these investigations to determine the genes responsible for both normal and abnormal brain development through the study of patients with this disorder. Mutations in one such gene, Sonic Hedgehog, have been shown by us to be responsible for approximately one quarter of familial cases of HPE. Other genes either related to the hedgehog pathway or located at unrelated defined genetic loci may also contribute to HPE and are the subject of active investigation. We anticipate that many genes important for normal brain development will be identified in the search for genetic causes of HPE.
Conditions Studied
Study Locations (1)
Maryland
- National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 5,735 participants |
| Start Date | 2008-06-01 |
| Est. Completion | 2021-01-19 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00645645
The ClinicalTrials.gov registry entry for NCT00645645 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 5,735 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is National Human Genome Research Institute (NHGRI), which has 242 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Holoprosencephaly appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00645645 reports 1 study location spanning 1 distinct geographic area — top geographies include Maryland. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00645645 about?
NCT00645645 is a clinical study titled "A Study of the Genetic Analysis of Brain Disorders". A study of the complex genetics of brain development will be undertaken with an emphasis on those genes that cause the most common structural brain anomaly in humans called holoprosencephaly (HPE). This malformation of the brain can result from either environmental or genetic causes, and it is the a...
What is the current status of trial NCT00645645?
This trial is currently completed. The enrollment target is 5,735 participants. The study started on 2008-06-01. Estimated completion is 2021-01-19.
What conditions does trial NCT00645645 study?
This clinical trial studies the following conditions: Holoprosencephaly. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT00645645?
This trial is sponsored by National Human Genome Research Institute (NHGRI), which has 242 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00645645 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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