NCT07112365 · The University of Texas Health Science Center, Houston
The FINTEPLA as an Anti-SUDEP Therapy in Dravet Syndrome Project
(FAST-DS)
What this study is about
This study investigates cerebrovascular reactivity (CVR) and functional brain connectivity in Dravet Syndrome (DS) patients with convulsive seizures. Using functional MRI (fMRI), we will define differences in brain responses to CO₂ changes before administration of the drug Fintepla (Baseline), with a library of healthy controls and with those obtained after administration of Fintepla (Day \~60).
View original scientific description
This study investigates cerebrovascular reactivity (CVR) and functional brain connectivity in Dravet Syndrome (DS) patients with convulsive seizures. Using functional MRI (fMRI), we will define differences in brain responses to CO₂ changes before administration of the drug Fintepla (Baseline), with a library of healthy controls and with those obtained after administration of Fintepla (Day \~60). Changes in CVR and their relation to ventilatory responses will also be assessed during fMRI.
Interventions
DRUG
Fenfluramine treatment (Fintepla)
Participants will receive Fintepla starting at 0.2 mg/kg/day, up to a maximum of 0.6 mg/kg/day (or 5.9 mL/day, whichever is lower), per FDA guidelines. Dosing will be adjusted as tolerated. After Day \~60, the dose will be gradually tapered.
DEVICE
Hypercapnia Challenge using the device (RespirAct)
Participants will undergo a hypercapnia challenge using the RespirAct device during fMRI. The protocol includes alternating one minute blocks of controlled CO₂ increases and normocapnia under normoxic conditions.
Primary outcome measures
Change in blood oxygenation level in response to CO₂
Time frame: Baseline, Day ~60
Measures how much blood oxygenation level dependent (BOLD) signal changes in response to CO₂, using fMRI.
Change in speed of cerebrovascular response to CO₂
Time frame: Baseline, Day ~60
Measures how quickly the brain responds to CO₂ exposure during fMRI.
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
- DS patients (with or without SCN1A pathogenic mutations)
- Generalized convulsive seizures
Exclusion criteria
- known cardiorespiratory, hepatic or renal disease, and/or
- allergic reactions or other contraindications to fenfluramine and/or
- on Stiripentol treatment, and/or
- on serotonergic medications, and/or
- contraindications to Midazolam anesthesia
- taken the following drugs within 14 days: monoamine oxidase inhibitors (MAOIs), anti-depressants (Selective Serotonin Reuptake Inhibitors (SSRIs), Serotonin and norepinephrine reuptake inhibitors (SNRIs), and Tricyclic antidepressants (TCAs)), St. John's Wort, Tryptophan, and Dextromethorphan
Where
- Houston, Texas
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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 Jul 15, 2026 · Source of record for eligibility and locations