A Study of the Efficacy and Safety of JZP-258 in Subjects With Narcolepsy With Cataplexy

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Jazz Pharmaceuticals

Status and phase

Completed
Phase 3

Conditions

Narcolepsy With Cataplexy

Treatments

Drug: JZP-258
Other: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

NCT03030599
15-006
2016-000426-20 (EudraCT Number)

Details and patient eligibility

About

This is a double-blind, placebo-controlled, randomized-withdrawal, multicenter study of the efficacy and safety of JZP-258.

Full description

Subjects will be transitioned to JZP-258 based on their treatment status at study entry. All subjects will begin JZP-258 treatment at the beginning of this period and continue through Week 12. They will be treated with JZP-258 alone for the final two weeks of this 12-week period. Once the JZP-258 dose has been optimized per the Investigator's judgment, these subjects may enter the 2-week Stable-Dose Period with that dose. Subjects are eligible to enter the Double-Blind Randomized-Withdrawal Period if the dose of JZP-258 remains unchanged during the Stable-Dose Period and, in the judgment of the Investigator, no clinically significant worsening in narcolepsy symptoms or clinically significant adverse events due to JZP-258 treatment have occurred. Subjects will return for a Safety Follow-up visit 2 weeks after the Double-Blind Randomized-Withdrawal Period. Subjects who complete the double-blind treatment period during the Main Study are eligible to enter a 24-week Open-Label Extension. During this period subjects will receive open label JZP-258. Subjects will return for a Safety Follow-up visit 2 weeks after the Open-Label Extension Period.

Enrollment

201 patients

Sex

All

Ages

18 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Male or female subjects between 18 and 70 years of age, inclusive.
  • Have a primary diagnosis of narcolepsy with cataplexy that meets ICSD-3 criteria or DSM-5 criteria, and currently untreated or treated with or without anticataplectics.
  • If applicable, treated with a stimulant or alerting agent at unchanged doses for at least 2 months prior to dosing or not treated with a stimulant or alerting agent.
  • Willing and able to comply with the study design schedule and other requirements.
  • Willing and able to provide written informed consent.

Exclusion criteria

  • Narcolepsy secondary to another medical condition (e.g., CNS injury or lesion)
  • History or presence of any unstable or clinically significant medical condition, behavioral or psychiatric disorder (including active suicidal ideation), or history or presence of another neurological disorder or surgical history that might affect the subject's safety and/or interfere with the conduct of the study in the opinion of the Investigator.
  • Treatment with any central nervous system sedating agents, including but not limited to benzodiazepines, nonbenzodiazepine anxiolytics/ hypnotics/sedatives, neuroleptics, opioids, barbiturates, phenytoin, ethosuximide, or MCT inhibitors, e.g. diclofenac, valproate, ibuprofen, within 2 weeks prior to enrollment (discontinuation for the purpose of study enrollment is permitted only if considered safe by the Investigator and approved by the Medical Monitor).
  • Treatment with an antidepressant for cataplexy, if the withdrawal of the antidepressant during cross-titration with JZP-258 might be unsafe due to prior history of depression.
  • Unsafe for the subject to receive placebo treatment for 2 weeks, in the opinion of the Investigator.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

201 participants in 2 patient groups, including a placebo group

Placebo
Placebo Comparator group
Description:
Placebo
Treatment:
Other: Placebo
JZP-258
Experimental group
Description:
JZP-258
Treatment:
Drug: JZP-258

Trial documents
2

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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