Researchers map the features of a rare genetic syndrome
NCT ID NCT03718910
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at 15 people with a rare genetic condition called DDX3X syndrome, which can cause intellectual disability and sometimes autism. Researchers used interviews, play-based assessments, and genetic tests to better understand the condition. The goal was to describe the range of symptoms and behaviors, not to test a treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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15 people
The number who actually took part.
- Started
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May 2018
- Finished
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Jun 2020
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Individuals for this cohort study will be selected from any population, provided that they have a variant in the DDX3X gene and meet eligibility requirements.
- Ages
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2 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Eligible participants must have a documented variant affecting the DDX3X gene that the research team determines to be likely or definitely pathogenic. * Eligible participants must be at least 2 years of age. Exclusion Criteria: * None
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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The Seaver Autism Center for Research and Treatment
New York, New York, 10029, United States
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