NCT05281445 · University of Utah
Exploring the Role of Neuroactive Steroids in Tourette Syndrome
(NS in TS)
What this study is about
Tourette syndrome (TS) is a disabling neurodevelopmental disorder characterized by motor and phonic tics. The studies proposed in this application will explore the endocrine mechanisms underlying two of the least well-understood biological characteristics of TS, namely its marked male predominance and stress susceptibility.
View original scientific description
Tourette syndrome (TS) is a disabling neurodevelopmental disorder characterized by motor and phonic tics. The studies proposed in this application will explore the endocrine mechanisms underlying two of the least well-understood biological characteristics of TS, namely its marked male predominance and stress susceptibility. In particular, our exploratory studies will characterize the steroid profile in TS-affected boys and girls to identify novel potential biomarkers and therapeutic targets for this disorder.
Interventions
BEHAVIORAL
Tic suppression task
Tic Suppression Task (TST, administered to Tourette syndrome participants only): At the beginning of the task, the child participant will be seated alone in front of a computer monitor with a countdown timer visible on the screen. For the first 10 minutes (baseline condition) they will be asked to tic freely and not to try to suppress their tics. For the second 10 minutes children will be asked to suppress their tics and will receive points for successful suppression. Participants will then be asked to sit alone in the room and tic freely for an additional 10-minutes.
Primary outcome measures
Salivary allopregnanolone concentrations
Time frame: Through study completion, an average of 2 years
Change of concentrations of salivary allopregnanolone, as measured by chromatography/ mass spectrometry. All concentrations will be expressed in pg/ml.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Diagnostic criteria of TS for cases (and lack of any tic disorders for controls)
- Age between 8 and 12 years old (this age range is to ensure that TS participants can perform the tic suppression task)
- confirmation of sexual development by parent and/or self-reported Tanner stage of pubic hair development.
Exclusion criteria
- major psychiatric disorders such as a psychotic disorder, autism spectrum disorder, conduct disorder, and substance use disorder;
- other neurological disorders;
- clinically significant endocrinological disorders;
- use of therapies that can modify hormonal profile;
- pharmacotherapies that may change stress sensitivity, such as antidepressants and anxiolytics.
Where
- Salt Lake City, Utah
Collaborators
University of Miami, Albert Einstein College of Medicine
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Oct 6, 2026 · Source of record for eligibility and locations