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Multiple-dose,Double-blind,Placebo-controlled Study of Sodium Oxybate in Patients With Essential Tremor

Multiple-dose, Double-blind, Placebo-controlled, Crossover Study to Compare the Pharmacokinetics, Pharmacodynamics, Safety, and Tolerability of Sodium Oxybate (Xyrem) in Subjects With Moderate to Severe Essential Tremor

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00598078
Enrollment
19
Registered
2008-01-18
Start date
2007-12-31
Completion date
2008-12-31
Last updated
2012-01-23

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

Conditions

Essential Tremor

Brief summary

To determine the relationship between drug plasma levels and safety, tolerability and efficacy in patients with essential tremors after dosing with Sodium oxybate

Interventions

DRUGSodium Oxybate

Dose 1

OTHERPlacebo

Dose 3

Sponsors

Jazz Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
50 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of moderate or severe classic essential tremor (bilateral, largely symmetric postural or kinetic tremor involving hands and forearms. * Willingness to abstain from ethanol and caffeine intake for at least 48 hours prior to Days 1 and 4 and on inpatient days

Exclusion criteria

* Subjects with a clinically significant unstable medical abnormality, chronic disease or history or presence of significant hepatic, renal, endocrine, cardiovascular, gastrointestinal, pulmonary, psychiatric, or metabolic disease or any other abnormality * Subjects who are on sodium-restricted diets * Subjects with a known history of sleep apnea

Design outcomes

Primary

MeasureTime frameDescription
Modified FTM(Fahn-Tolosa-Marin) Essentials Tremor Rating Scale, Sum of All Essential Rating Tremor Scales Including Voice TremorHour 1The modified FTM sum of all essential rating tremor scales including voice tremor includes: the tremor rating taken for the left & right hands individually at rest, with posture (arms outstretched), with action (finger to nose). It also includes an evaluation of voice with scores for AAA & EEE sounds, an action evaluation of left & right hands pouring, bringing liquids to mouth, drawing large & small spirals. Scores for indiviuals items range from 0 (no tremor) to 4 (severe tremor). The sum ranges from 0 (no tremor) to 72 points (higher amplitude/more tremors).

Countries

United States

Participant flow

Participants by arm

ArmCount
All Study Participants
All treated study participants
20
Total20

Withdrawals & dropouts

PeriodReasonFG000FG001
Period 2 (Day 2)Adverse Event10

Baseline characteristics

CharacteristicAll Study Participants
Age Continuous60.0 years
STANDARD_DEVIATION 8.72
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
19 Participants
Region of Enrollment
United States
20 participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
15 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
5 / 2012 / 201 / 19
serious
Total, serious adverse events
0 / 200 / 200 / 19

Outcome results

Primary

Modified FTM(Fahn-Tolosa-Marin) Essentials Tremor Rating Scale, Sum of All Essential Rating Tremor Scales Including Voice Tremor

The modified FTM sum of all essential rating tremor scales including voice tremor includes: the tremor rating taken for the left & right hands individually at rest, with posture (arms outstretched), with action (finger to nose). It also includes an evaluation of voice with scores for AAA & EEE sounds, an action evaluation of left & right hands pouring, bringing liquids to mouth, drawing large & small spirals. Scores for indiviuals items range from 0 (no tremor) to 4 (severe tremor). The sum ranges from 0 (no tremor) to 72 points (higher amplitude/more tremors).

Time frame: Hour 1

ArmMeasureValue (LEAST_SQUARES_MEAN)
Sodium Oxybate 1.5 Grams (A)Modified FTM(Fahn-Tolosa-Marin) Essentials Tremor Rating Scale, Sum of All Essential Rating Tremor Scales Including Voice Tremor13.4 Points
Sodium Oxybate 3 Grams (B)Modified FTM(Fahn-Tolosa-Marin) Essentials Tremor Rating Scale, Sum of All Essential Rating Tremor Scales Including Voice Tremor10.8 Points
Placebo (C)Modified FTM(Fahn-Tolosa-Marin) Essentials Tremor Rating Scale, Sum of All Essential Rating Tremor Scales Including Voice Tremor13.0 Points
p-value: 0.013ANOVA
p-value: 0.713ANOVA
p-value: 0.038ANOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026