Clinical Study to evaluate the safety and effectiveness of Fenfluramine as adjunct therapy in children and young adults with Dravet Syndrome
- Conditions
- Dravet's syndromeMedDRA version: 19.0Level: LLTClassification code 10073682Term: Dravet syndromeSystem Organ Class: 100000004850Therapeutic area: Diseases [C] - Nervous System Diseases [C10]
- Registration Number
- EUCTR2016-002804-14-IT
- Lead Sponsor
- Zogenix International Limited
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- All
- Target Recruitment
- 310
1. Subject is aged 2 to 18 years inclusive, as of the day of the core study Screening Visit. Subject is male or non-pregnant, non-lactating female. Female subjects of childbearing potential must not be pregnant or breast-feeding. Female subjects of childbearing potential must have a negative urine pregnancy test. Subjects of childbearing or child-fathering potential must be willing to use medically acceptable forms of birth control, which includes abstinence, while being treated on this study and for 30 days after the last dose of study drug.
2. Subject has satisfactorily completed the core study in the opinion of the investigator and the sponsor.
3. Subject has documented medical history to support a clinical diagnosis of Dravet syndrome, where convulsive seizures are not completely controlled by current antiepileptic drugs.
4. Subject has been informed of the nature of the study and informed consent has been obtained from the legally responsible parent/guardian.
5. Subject has provided assent in accordance with IRB/IEC requirements, if capable.
6. Subject’s caregiver is willing and able to be compliant with diary completion, visit schedule and study drug accountability.
7. Subject’s parent/caregiver has been compliant with diary completion during the core study, in the opinion of the investigator (eg, at least 90% compliant).
8. Subjects entering from study ZX008-1504 must be receiving a therapeutically relevant and stable dose of clobazam, valproic acid, and stiripentol (Cohort 1 Dose Regimen 3 and Cohort 2 only) for at least 4 weeks prior to screening and are expected to remain stable throughout the study.
Are the trial subjects under 18? yes
Number of subjects for this age range: 310
F.1.2 Adults (18-64 years) no
F.1.2.1 Number of subjects for this age range
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range
1. Subject has a known hypersensitivity to fenfluramine or any of the excipients in the study medication.
2. Subject has current or past history of cardiovascular or cerebrovascular disease, myocardial infarction or stroke.
3. Subject with current cardiac valvulopathy or pulmonary hypertension that the investigator, parent, IPCAB, IDSMC, or sponsor deems clinically significant and warrants discontinuation of study medication.
4. Subject has current or recent history of Anorexia Nervosa, bulimia, or depression within the prior year that required medical treatment or psychological treatment for a duration greater than 1 month.
5. Subject is at imminent risk of self-harm or harm to others, in the investigator’s opinion, based on clinical interview and responses provided on the Columbia-Suicide Severity Rating Scale (C-SSRS). Subjects must be excluded if they report suicidal behavior as measured by the C-SSRS Since Last Visit, which includes suicidal ideation with intent and plan (Item #5). If a subject reports suicidal ideation on Item 4 without specific plan, and the investigator feels that the subject is appropriate for the study considering the potential risks, the investigator must document appropriateness for inclusion, and discuss with the parent/caregiver to be alert to mood or behavioral changes, especially around times of dose adjustment.
6. Subject has a current or past history of glaucoma.
7. Subject has moderate or severe hepatic impairment. Asymptomatic subjects with mild hepatic impairment (elevated liver enzymes <3x upper limited of normal [ULN] and/or elevated bilirubin <2x ULN) may be entered into the study after review and approval by the Medical Monitor in conjunction with the sponsor, in consideration of comorbidities and concomitant medications.
8. Subject is receiving concomitant therapy with: 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; atomoxetine, or other centrally-acting noradrenergic agonist; cyproheptadine, and/or cytochrome P450 (CYP) 2D6/3A4/2B6 inhibitors/substrates (see Appendix 1). (Note: Short-term medication requirements will be handled on a per case basis by the Medical Monitor.)
9. Subject is currently taking carbamazepine, oxcarbamazepine, eslicarbazepine, phenobarbital, or phenytoin, or has taken any of these within the past 30 days, as maintenance therapy.
10. For subjects entering from core studies ZX008-1501, ZX008-1502, or ZX008-1504 (Cohort 1/Dose Regimens 1 &2): Subject is currently receiving or has received stiripentol in the past 21 days prior to core study Visit 1.
11. Subject is unwilling to refrain from large or daily servings of grapefruits and/or Seville oranges, and their juices beginning with Visit 1 and throughout the study.
12. Subject has positive result on urine THC Panel or whole blood CBD at Visit 1.
13. Subject is unwilling or unable to comply with scheduled visits, drug administration plan, laboratory tests, other study procedures, and study restrictions.
14. Subject has a clinically significant condition, or has had clinically relevant symptoms or a clinically significant illness in the 4 weeks prior to Visit 1, other than epilepsy, that would negatively impact study participation, collection of study data, or pose a risk to the subject.
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method