- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06118255
A Study to Evaluate Safety, Tolerability, and Pharmacokinetics of Fenfluramine (Hydrochloride) in Infants 1 Year to Less Than 2 Years of Age With Dravet Syndrome (ORCHID)
April 11, 2024 updated by: UCB BIOSCIENCES, Inc.
Open-Label, Single-Arm, Phase 3 Study to Evaluate Safety, Tolerability, and Pharmacokinetics of Fenfluramine (Hydrochloride) in Infants 1 Year to Less Than 2 Years of Age With Dravet Syndrome
The primary purpose of this study is evaluate the safety and tolerability of fenfluramine hydrochloride (HCl) 0.2 to 0.8 mg/kg/day in infants 1 year to less than 2 years of age with Dravet syndrome.
Study Overview
Study Type
Interventional
Enrollment (Estimated)
20
Phase
- Phase 3
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: UCB Cares
- Phone Number: 1-844-599-2273 (USA)
- Email: ucbcares@ucb.com
Study Contact Backup
- Name: UCB Cares
- Phone Number: 001 844 599 2273
- Email: UCBCares@ucb.com
Study Locations
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Tennessee
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Memphis, Tennessee, United States, 38103
- Recruiting
- Ep0213 105
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Child
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Participant is ≥1 to <2 years of age as of the day of the first administration of study drug
- Participant has a documented diagnosis or likely diagnosis of Dravet syndrome according to the International League Against Epilepsy (ILAE) criteria and as agreed by the Epilepsy Study Consortium (ESC)
- Participant must be currently receiving ≥1 concomitant antiseizure medication (ASM) at a stable dose for ≥4 weeks prior to the Screening Visit and is expected to remain stable throughout the study. Rescue medications for seizures are not counted towards the total number of ASMs
- Participants must have ≥4 countable motor seizures (CMS) during the Baseline Period. The CMS include distinct seizures of generalized tonic clonic, bilateral clonic, bilateral tonic, atonic (drop), bilateral tonic/atonic, or focal to bilateral tonic-clonic type. If the participant fails to have ≥4 qualifying seizures in 28 days, the Baseline Period may be extended by an additional 14 days with Sponsor approval. Participants with an extended Baseline Period must still have ≥4 CMS in the 28 days immediately prior to the day of the first administration of study drug.
- Body weight is ≥8 kg
- Males and females.
Exclusion Criteria:
- Participant has a known hypersensitivity to fenfluramine hydrochloride (HCl) or any of the excipients in the study drug
- Participant has an exclusionary cardiovascular or cardiopulmonary abnormality based on echocardiogram (ECHO), electrocardiogram (ECG), or physical examination and is not approved for entry by the central cardiac reader
- Participant has a diagnosis of pulmonary arterial hypertension
- Participant has a clinically significant medical condition, including chronic obstructive pulmonary disease, interstitial lung disease, or portal hypertension, or has had clinically relevant symptoms or a clinically significant illness currently or in the 4 weeks prior to the Screening Visit, other than epilepsy, that in the opinion of the Investigator would negatively impact study participation, collection of study data, or pose a risk to the participant
- Participant has current or past history of cardiovascular or cerebrovascular disease, such as cardiac valvulopathy, myocardial infarction or stroke, severe ventricular arrhythmias, or clinically significant structural cardiac abnormality, including but not limited to mitral valve prolapse, atrial or ventricular septal defects, patent ductus arteriosus, and patent foramen ovale with reversal of shunt. (Note: Patent foramen ovale or a bicuspid aortic valve are not considered exclusionary.)
- Participant has a current or past history of glaucoma
- Participant has moderate to severe hepatic impairment, assessed based on the Child-Pugh classification system
- Participant has moderate to severe renal impairment (estimated glomerular filtration rate <50 mL/min/1.73 m^2 calculated with the updated Bedside Schwartz equation for children
- QT interval corrected (QTc) >450 msec
- Participant is taking >4 concomitant ASMs
- Participant is receiving concomitant treatment with cannabidiol other than Epidiolex/Epidyolex or is being actively treated with tetrahydrocannabinol (THC) or any marijuana product for any condition
- Participant is receiving concomitant therapy with any of the following: centrally-acting anorectic agents; monoamine-oxidase inhibitors; any centrally-acting compound with clinically appreciable amount of serotonin agonist or antagonist properties, including serotonin reuptake inhibition; other centrally-acting noradrenergic agonists, including atomoxetine; or cyproheptadine. Disallowed medications are subject to washout of ≥5 half-lives before the first day of study drug administration
- Participant is currently receiving another investigational product(s) or has received another investigational product within 30 days or within <5 times the half-life of that investigational product, whichever is longer, prior to the Screening Visit
- Participant has previously been treated with Fintepla (fenfluramine HCl) prior to the Screening Visit
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Fenfluramine Open-label
All study participants will initiate fenfluramine hydrochloride (HCl) treatment at 0.2 mg/kg/day in the Dose-Finding Period and may be up-titrated to a maximum of 0.8 mg/kg/day based on the Investigators discretion.
The dose of fenfluramine HCl can be flexibly titrated during the Maintenance Period.
Study participants, who discontinue early will participate in the Taper Period.
All participants will complete an End of Treatment (EOT) Visit.
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The study drug, fenfluramine HCl, is an oral solution to be administered in equal doses twice daily (BID).
It will be based on the current dose and participant's weight (kg).
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change from Baseline in QT interval corrected by Fridericia (QTcF) at Visit 13 (End of Treatment/Early Termination (EOT/ET))
Time Frame: Week 52 (Visit 13; EOT/ET), compared to Baseline
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QTcF is the QT interval corrected for heart rate according to Fridericia's formula.
Higher values correspond to prolongation of QT interval.
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Week 52 (Visit 13; EOT/ET), compared to Baseline
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Occurrence of a treatment-emergent (ie, post-Baseline through Visit 13 [EOT/ET]) result which meets the FDA case definition of drug associated valvulopathy
Time Frame: From post-Baseline (Day 1) through Visit 13 (EOT/ET) (up to 52 weeks)
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Drug associated valvulopathy refers to aortic regurgitation with severity mild or greater and/or mitral regurgitation with severity moderate or greater.
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From post-Baseline (Day 1) through Visit 13 (EOT/ET) (up to 52 weeks)
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Occurrence of treatment-emergent (ie, post-Baseline through Visit 13 [EOT/ET]) clinically confirmed valvular heart disease (VHD)
Time Frame: From post-Baseline (Day 1) through Visit 13 (EOT/ET) (up to 52 weeks)
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Clinically confirmed VHD is an aortic regurgitation with mild or greater severity and/or a mitral regurgitation with moderate or greater severity.
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From post-Baseline (Day 1) through Visit 13 (EOT/ET) (up to 52 weeks)
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Change from Baseline in body weight (Z-score) at each visit
Time Frame: Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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Body weight (Z-score) refers to the number of standard deviations a participant's body weight lies from the mean, when compared to others of similar gender and age.
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Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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Change from Baseline in recumbent length (Z-score) at each visit
Time Frame: Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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Recumbent length (Z-score) refers to the number of standard deviations a participant's body weight lies from the mean, when compared to others of similar gender and age.
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Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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Occurrence of a clinically significant abnormality on the neurological examination at each visit
Time Frame: Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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A complete neurological examination will be conducted by the investigator for each participant covering cranial nerves, muscle strength and tone, reflexes, coordination, sensory function, and gait.
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Week 1 (Visit 3), Week 4 (Visit 5), Week 8 (Visit 7), Week 12 (Visit 8), Week 16 (Visit 9), Week 20 (Visit 10), Week 26 (Visit 11), Week 39 (Visit 12), Week 52 (Visit 13), Postdose Safety Follow-Up (Visit 14), compared to Baseline
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage change from the Baseline Period (ie, Baseline) in monthly (28 days) countable motor seizure frequency (CMSF), during Weeks 9 through 20
Time Frame: During Weeks 9 to 20, compared to Baseline
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The percentage change from the Baseline Period (Baseline) in "monthly (28 days) countable motor seizure frequency," or CMSF, during Weeks 9 through 20
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During Weeks 9 to 20, compared to Baseline
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Percentage change from Baseline in CMSF during Weeks 1 through 20
Time Frame: During Weeks 1 to 20, compared to Baseline
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The percentage change from the Baseline Period (Baseline) in "monthly (28 days) countable motor seizure frequency," or CMSF, during Weeks 1 through 20
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During Weeks 1 to 20, compared to Baseline
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Percentage change from Baseline in CMSF during the Treatment Period (Week 1 through the EOT/ET Visit)
Time Frame: During the Treatment Period (Week 1 through EOT/ET) (up to 52 weeks), compared to Baseline
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The percentage change from the Baseline Period (Baseline) in "monthly (28 days) countable motor seizure frequency," or CMSF, during the Treatment Period (Week 1 through the EOT/ET Visit; up to 52 weeks)
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During the Treatment Period (Week 1 through EOT/ET) (up to 52 weeks), compared to Baseline
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Achievement of a Clinical Global Impression - Improvement (CGI-I) rating of "much improved" or "very much improved" as assessed by the Principal Investigator at Week 20
Time Frame: At Week 20
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The CGI-I rating scale permits a global evaluation of the participant's improvement over time by the investigator on a 7-point scale.
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At Week 20
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Achievement of a CGI-I rating of "much improved" or "very much improved" as assessed by the parent/caregiver at Week 20
Time Frame: At Week 20
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The CGI-I rating scale permits a global evaluation of the participant's improvement over time by the parent/caregiver on a 7-point scale.
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At Week 20
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Steady-state maximum plasma concentration (Cmax) of fenfluramine and norfenfluramine at Week 12
Time Frame: At Week 12
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Mean peak (maximum) plasma concentration of fenfluramine and norfenfluramine will be reported at Study Week 12 when participants are in the Maintenance Period.
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At Week 12
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Steady-state minimum plasma concentration (Cmin) of fenfluramine and norfenfluramine at Week 12
Time Frame: At Week 12
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Mean minimum plasma concentration of fenfluramine and norfenfluramine will be reported at Study Week 12 when participants are in the Maintenance Period.
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At Week 12
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Area under the plasma concentration time curve from time zero to 24 hours (AUC0 24) for steady-state fenfluramine and norfenfluramine at Week 12
Time Frame: At Week 12
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Mean AUC0-24 values of fenfluramine and norfenfluramine will be reported at Study Week 12 when participants are in the Maintenance Period.
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At Week 12
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Study Director: UCB Cares, 001 844 599 2273
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Estimated)
May 22, 2024
Primary Completion (Estimated)
May 20, 2026
Study Completion (Estimated)
September 2, 2026
Study Registration Dates
First Submitted
October 23, 2023
First Submitted That Met QC Criteria
November 2, 2023
First Posted (Actual)
November 7, 2023
Study Record Updates
Last Update Posted (Actual)
April 12, 2024
Last Update Submitted That Met QC Criteria
April 11, 2024
Last Verified
April 1, 2024
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Brain Diseases
- Central Nervous System Diseases
- Nervous System Diseases
- Epilepsy, Generalized
- Epileptic Syndromes
- Disease
- Epilepsy
- Epilepsies, Myoclonic
- Syndrome
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Neurotransmitter Uptake Inhibitors
- Membrane Transport Modulators
- Serotonin Agents
- Selective Serotonin Reuptake Inhibitors
- Fenfluramine
Other Study ID Numbers
- EP0213
- 2022-502359-75-00 (Registry Identifier: CTIS (EU CT))
- U1111-1289-2867 (Other Identifier: WHO universal trial number (UTN))
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
YES
IPD Plan Description
Data from this study may be requested by qualified researchers six months after product approval in the US and/or Europe, or global development is discontinued, and 18 months after trial completion.
Investigators may request access to anonymized IPD and redacted study documents which may include: raw datasets, analysis-ready datasets, study protocol, blank case report form, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report.
Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org
and a signed data sharing agreement will need to be executed.
All documents are available in English only, for a pre-specified time, typically 12 months, on a password protected portal.
This plan may change if a determination is made that the data cannot be adequately anonymized.
IPD Sharing Time Frame
Data from this study may be requested by qualified researchers six months after product approval in the US and/or Europe or global development is discontinued, and 18 months after trial completion.
IPD Sharing Access Criteria
Qualified researchers may request access to anonymized IPD and redacted study documents which may include: raw datasets, analysis-ready datasets, study protocol, blank case report form, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report.
Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org
and a signed data sharing agreement will need to be executed.
All documents are available in English only, for a pre-specified time, typically 12 months, on a password protected portal.
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- CSR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
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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