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A Safety and Efficacy Study of Xyrem® (Sodium Oxybate) to Treat Fibromyalgia.

Phase 3
Completed
Conditions
Fibromyalgia
Interventions
Drug: placebo
Registration Number
NCT00423813
Lead Sponsor
Jazz Pharmaceuticals
Brief Summary

The objective of this trial is to evaluate the safety and efficacy of Xyrem® compared to placebo for the treatment of fibromyalgia in a randomized, double blind, placebo controlled, parallel group trial.

Detailed Description

The trial is a randomized, double blind, placebo controlled, parallel group trial in subjects diagnosed with fibromyalgia in accordance with the American College of Rheumatology. Total duration is up to twenty-two (22) weeks of trial participation. Subjects will undergo a screening and withdrawal/washout period lasting up to five (5) weeks combined followed by baseline period lasting one (1) week. Total treatment duration will be fourteen (14) weeks followed by a two week safety follow-up post treatment period. During the screening and withdrawal/washout period, no study medication will be given; however rescue medication up to 4 grams per day of acetaminophen (paracetemol) will be allowed.

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
573
Inclusion Criteria
  • Male or female subjects, 18 years or older who meet the American College of Rheumatology (ACR) diagnostic criteria for fibromyalgia.
Exclusion Criteria
  • Subjects will be excluded if they have a history of rheumatic disease or other disorders that may compromise reliable representation of subjective symptoms.
  • Any other condition that will cause a risk to subjects if they participate in the trial is also a reason for exclusion.

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
2Xyrem®-
1placebo-
Primary Outcome Measures
NameTimeMethod
Pain VAS (Visual Analog Scale) Response. Percentage of Subjects With a Greater Than or Equal to 30% Reduction in Pain VAS From Baseline (BOCF).Baseline to Week 14

Percentage of pain VAS responders. Subjects with a \>= 30% reduction in pain VAS from baseline to endpoint (week 14) were considered responders; all other subjects were considered non-responders. Missing data were handled using BOCF (Baseline Observation Carried Forward). The pain VAS ranges from 0 (no pain) to 100 (worst imaginable pain). The pain VAS was collected morning, afternoon and evening. Baseline is the average value recorded for the measure during the week prior to the end-of-baseline visit. Endpoint is the average value recorded for the measure during the week prior to week 14.

Secondary Outcome Measures
NameTimeMethod

Trial Locations

Locations (115)

East Alabama Arthritis Center

🇺🇸

Auburn, Alabama, United States

Capstone Clinical Trials, Inc.

🇺🇸

Birmingham, Alabama, United States

Drug Research and Analysis Corporation

🇺🇸

Montgomery, Alabama, United States

dba 21st Century Neurology

🇺🇸

Phoenix, Arizona, United States

Orange County Clinical Trials

🇺🇸

Anaheim, California, United States

Providence Clinical Research

🇺🇸

Burbank, California, United States

Med Investigations, Inc.

🇺🇸

Fair Oaks, California, United States

North Orange County Research Institute, Inc.

🇺🇸

Fullerton, California, United States

Nerve Pro Research

🇺🇸

Irvine, California, United States

Northridge Neurological Center

🇺🇸

Northridge, California, United States

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East Alabama Arthritis Center
🇺🇸Auburn, Alabama, United States

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