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An Open-Label Extension Trial to Assess the Long-Term Safety of ZX008 (Fenfluramine Hydrochloride) Oral Solution as an Adjunctive Therapy in Children and Young Adults with Dravet Syndrome

An Open-Label Extension Trial to Assess the Long-Term Safety of ZX008 (Fenfluramine Hydrochloride) Oral Solution as an Adjunctive Therapy in Children and Young Adults with Dravet Syndrome

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2041200095
Enrollment
390
Registered
2021-01-29
Start date
2019-11-18
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dravet syndrome

Interventions

ZX008 (Fenfluramine Hydrochloride) Oral Solution Initial dose: 0.2mg/kg, Max daily dose: 30mg

Sponsors

YAMAMOTO Hideichiro
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Male or non-pregnant, non-lactating female, age 2 to 18 years, inclusive as of the day of the core study Screening Visit. - Satisfactory completion of the core study in the opinion of the investigator and the sponsor. - A documented medical history to support a clinical diagnosis of Dravet syndrome, where convulsive seizures are not completely controlled by current antiepileptic drugs. - Parent/caregiver is willing and able to be compliant with diary completion, visit schedule and study drug accountability. - 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).

Exclusion criteria

Exclusion criteria: - Current or past history of cardiovascular or cerebrovascular disease, myocardial infarction or stroke. - Current or past history of glaucoma. - Moderate or severe hepatic impairment. - Receiving concomitant therapy with: centrally-acting anorectic agents; monoamineoxidase 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. - Currently taking carbamazepine, oxcarbamazepine, eslicarbazepine, phenobarbital, or phenytoin, or has taken any of these within the past 30 days, as maintenance therapy. - A clinically significant condition, or has had clinically relevant symptoms or a clinically significant illness at Visit 1, other than epilepsy, that would negatively impact study participation, collection of study data, or pose a risk to the subject.

Design outcomes

Primary

MeasureTime frame
Long-term safety and tolerability as measured by treatment emergent adverse events, including clinical labs, vital signs, and examination findings.

Countries

Australia, Belgium, Canda, Denmark, France, Germany, Italy, Japan, Korea, Netherland, Norway, Spain, Sweeded, UK, US

Contacts

Public ContactHideichiro YAMAMOTO

Syneos Health Clinical K.K.

hideichiro.yamamoto@syneoshealth.com+81-6-7638-6683

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026