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Completed Phase 2 Interventional Results available

A Study To Assess the Safety and Efficacy of JZP385 in the Treatment of Adults With Moderate to Severe Essential Tremor (ET)

ClinicalTrials.gov ID: NCT05122650

Public ClinicalTrials.gov record NCT05122650. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 4, 2026, 3:16 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 2b, 12-week, Double-blind, Placebo-controlled, Randomized, Parallel Group, Multicenter Study of the Safety and Efficacy of JZP385 in the Treatment of Adults With Moderate to Severe Essential Tremor

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is a 12-week, double-blind, placebo-controlled, randomized, parallel-group, multicenter study of the safety and efficacy of JZP385 in the treatment of adult participants with moderate to severe ET.

Study identification

NCT ID
NCT05122650
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Jazz Pharmaceuticals
Industry
Enrollment
420 participants

Conditions and interventions

Interventions

Drug · Other

Eligibility (public fields only)

Age range
18 Years to 80 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Dec 6, 2021 (Actual)
Primary completion
May 30, 2024 (Actual)
Completion
May 30, 2024 (Actual)
Last update posted
Jul 24, 2025

2021 – 2024

United States locations

U.S. sites
41
U.S. states
19
U.S. cities
36
Facility City State ZIP Site status
The University Of Alabama At Birmingham (Uab) Birmingham Alabama 35233 —
St. Joseph's Hospital and Medical Center (SJHMC) - Barrow Neurological Institute (BNI) - The Gregory W. Fulton ALS and Neuromuscular Disease Center Phoenix Arizona 85013 —
Arizona Neuroscience Research, LLC Phoenix Arizona 85032 —
Imaging Endpoints II, LLC Scottsdale Arizona 85258 —
Movement Disorders Center of Arizona Scottsdale Arizona 85258 —
Banner Sun Health Research Institute Sun City Arizona 85351 —
Pillar Clinical Research, LLC Bentonville Arkansas 72712 —
Woodland Research Northwest, LLC Rogers Arkansas 72758 —
The Parkinson's and Movement Disorder Institute Fountain Valley California 92708 —
Keck School of Medicine USC - Healthcare Consultation Center 2 (HCCII) Los Angeles California 90033 —
SC3 Research - Beverly Los Angeles California 90048 —
SC3 Research Pasadena Pasadena California 91105 —
Neurology of Central Florida Research Center Altamonte Springs Florida 32714 —
JEM Research Institute Atlantis Florida 33462 —
Parkinson's Disease And Movement Disorder Center Of Boca Raton Boca Raton Florida 33486 —
Innovative Research Of West Florida, Inc. Clearwater Florida 33756 —
Infinity Clinical Research, Llc Hollywood Florida 33024 —
Clinical Neuroscience Solutions, Inc. Jacksonville Florida 33217 —
Homestead Associates in Research, Inc. Miami Florida 33032 —
USF Carol and Frank Morsani Center for Advanced Healthcare Tampa Florida 33612 —
University of South Florida Parkinson's Disease and Movement Disorders Center Tampa Florida 33613 —
Neurotrials Research, Inc. Atlanta Georgia 30328 —
Brain Health Center, Emory University Atlanta Georgia 30329 —
Hawaii Pacific Neuroscience Honolulu Hawaii 96817 —
Northwestern University - Feinberg School of Medicine - Parkinsonÿs Disease and Movement Disorders Center Chicago Illinois 60611 —
University of Kansas Medical Center Kansas City Kansas 66160 —
University of Louisville, Movement Disorder Clinic Louisville Kentucky 40202 —
QUEST Research Institute Farmington Hills Michigan 48334 —
University Nebraska Medical Center Omaha Nebraska 68198 —
Dent Neurological Institute Amherst New York 14226 —
South Shore Neurology Associates, Inc. Patchogue New York 11772 —
University of Rochester Medical Center Rochester New York 14618 —
Richmond Behavioral Associates Staten Island New York 10314 —
Duke University Health System Durham North Carolina 27705 —
American Clinical Research Institute LLC Beavercreek Ohio 45432 —
NeuroScience Research Center Canton Ohio 44718 —
Midwest Clinical Research Center Dayton Ohio 45417 —
Vanderbilt University Medical Center Nashville Tennessee 37232 —
Houston Methodist Hospital - Movement Disorders Clinic Houston Texas 77030 —
Booth Gardner Parkinson's Care Center Kirkland Washington 98034 —
Vaught Neurological Services, PLLC Crab Orchard West Virginia 25827 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 32 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05122650, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jul 24, 2025 · Synced Nov 4, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05122650 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →