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A Two-Part Study of ZX008 in Children and Adults with Lennox-Gastaut Syndrome (LGS)

A Two-Part Study of ZX008 in Children and Adults with Lennox-Gastaut Syndrome (LGS) ; Part 1: A Randomized, Double-blind, Placebo-controlled Trial of Two Fixed Doses of ZX008 (Fenfluramine Hydrochloride) Oral Solution as Adjunctive Therapy for Seizures in Children and Adults with LGS, Followed by Part 2: An Open-label Extension to Assess Long-Term Safety of ZX008 in Children and Adults with LGS

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2041200096
Enrollment
300
Registered
2021-01-29
Start date
2019-05-07
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

Lennox-Gastaut syndrome

Interventions

ZX008 (Fenfluramine Hydrochloride) Oral Solution 0.2 - 0.8 mg/kg. max 30mg/day

Sponsors

YAMAMOTO Hideichiro
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Male or non-pregnant, non-lactating female, age 2 to 35 years, inclusive as of the day of the Screening Visit. - Clinical diagnosis of Lennox-Gastaut syndrome, where seizures that result in drops are not completely controlled by current antiepileptic treatments. - Onset of seizures at 11 years of age or younger. - Abnormal cognitive development. - Must be receiving at least 1 concomitant AED and up to 4 concomitant anti-epileptic treatments.

Exclusion criteria

Exclusion criteria: -Etiology of seizures is a degenerative neurological disease. -A history of hemiclonic seizures in the first year of life. -Subject only has drop seizures in clusters, where individual seizures cannot be counted reliably. -Pulmonary arterial hypertension. -Current or past history of cardiovascular or cerebrovascular disease, such as cardiac valvulopathy, myocardial infarction or stroke. -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. -Taking felbamate for less than 1 year prior to screening and/or does not have stable liver function and hematology laboratory tests, and/or the dose has not been stable for at least 60 days prior to the Screening Visit. -Currently receiving an investigational product. -Institutionalized in a general nursing home (ie, in a facility that does not specialize in epilepsy care). -A clinically significant condition, or has had clinically relevant symptoms or a clinically significant illness in the 4 weeks prior to the Screening Visit, 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
The change in frequency of seizures that result in drops between baseline and the combined Titration and Maintenance Periods (T+M)

Countries

Australia, Belgium, Canda, Denmark, France, Germany, Italy, Japan, Mexico, Netherland, Poland, Spain, Sweeden, US

Contacts

Public ContactHideichiro YAMAMOTO

Syneos Health Clinical K.K.

chiken@syneoshealth.com+81-3-6733-9690

Outcome results

None listed

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