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

This study has been completed.
Information provided by (Responsible Party):
Jazz Pharmaceuticals Identifier:
First received: January 16, 2007
Last updated: January 20, 2012
Last verified: December 2011
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.

Condition Intervention Phase
Drug: placebo
Drug: Xyrem®
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomized, Double-Blind, Placebo-Controlled, Safety and Efficacy Study of Xyrem® (Sodium Oxybate) in Subjects With Fibromyalgia.

Resource links provided by NLM:

Further study details as provided by Jazz Pharmaceuticals:

Primary Outcome Measures:
  • Pain VAS (Visual Analog Scale) Response. Percentage of Subjects With a Greater Than or Equal to 30% Reduction in Pain VAS From Baseline (BOCF). [ Time Frame: 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.

Enrollment: 573
Study Start Date: December 2006
Study Completion Date: June 2009
Primary Completion Date: April 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: 1 Drug: placebo
Oral Solution
Experimental: 2 Drug: Xyrem®
two doses

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.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00423813

  Show 116 Study Locations
Sponsors and Collaborators
Jazz Pharmaceuticals
  More Information

Bennett RM, Benson B, Choy EH, Hackshaw KV, Alvarez-Horine S, Wang, YG, Spaeth M. Effects of Sodium Oxybate on Pain, Function, and PGIC in Fibromyalgia: Results From an International, 14-Week, Randomized, Double-Blind, Placebo-Controlled, Phase 3 Trial. [AAPM abstract 186]. Pain Med. 2010;11(2):317.
Swick TJ, Spaeth M, Choy EH, Alvarez-Horine S, Wang YG, Benson B, Bennett R. Sodium Oxybate Reduces Pain and Improves Function and PGIC in Fibromyalgia: Results From an International, Randomized, Double-Blind, Placebo-Controlled, Phase 3 Trial [AAN abstract P03.293]. Neurology. 2010;74(suppl 2):A280.
Bennett RM, Rosenthal N, Lai C, Benson B, Wang YG, Alegre C, Perrot S.. Functionality and Quality of Life Are Improved in Fibromyalgia Patients Treated With Sodium Oxybate: Results From a Phase 3 International Trial. In: American Psychiatric Association New Research Abstracts to the 2010 Annual Meeting; May 22-26, 2010; New Orleans, LA. Abstract NR7-49.
Swick TJ, Curtis C, Benson B, Lai C, Wang YG, Rothman J, Sarzi-Puttini P. Fibromyalgia Patients Have Impaired Sleep and Daytime Functioning at Baseline: Data From an International Phase 3 Trial of Sodium Oxybate [APSS abstract 0882]. Sleep. 2010;33(suppl):A295.
Swick TJ, Lai C, Benson B, Wang YG, Sarzi-Puttini P. Fibromyalgia Pain, Fatigue, and Sleep Improve With Sodium Oxybate Treatment: A 14-Week Randomized, Double-Blind, Placebo-Controlled International Trial [APSS abstract 0883]. Sleep. 2010;33(suppl):A295.
Choy E, Alegre C, Sarzi-Puttini P, van Seventer R, Wang YG, Guinta D, Lai C, Bennett R and the Oxybate in Fibromyalgia 06-009 Study Group. The Effects of Sodium Oxybate on Sleep Disturbance, Fatigue, and Functioning in Fibromyalgia: Results From a Phase 3, Randomized, Double-Blind, Placebo-Controlled International Trial [FRI10411]. Ann Rheum Dis. 2010;69(suppl 3):449.
Spaeth M, Perrot S, Samborski W, Bazzichi L, van de Laar M, Guinta D, Wang YG, Lai C, Bennett R and Sodium Oxybate in Fibromyalgia 06-009 Study Group. Sodium Oxybate Treatment Improves Pain, Function, and Patient Global Impression of Change (PGIC) in Fibromyalgia Patients: Results From an International, Randomized, Double-Blind, Placebo-Controlled Trial. Ann Rheum Dis. 2010;69(suppl 3):449

Responsible Party: Jazz Pharmaceuticals Identifier: NCT00423813     History of Changes
Other Study ID Numbers: 06-009
Study First Received: January 16, 2007
Results First Received: September 8, 2011
Last Updated: January 20, 2012

Keywords provided by Jazz Pharmaceuticals:
Body pain
muscular pain
joint pain

Additional relevant MeSH terms:
Myofascial Pain Syndromes
Muscular Diseases
Musculoskeletal Diseases
Rheumatic Diseases
Neuromuscular Diseases
Nervous System Diseases
Sodium Oxybate
Adjuvants, Anesthesia
Anesthetics, Intravenous
Anesthetics, General
Central Nervous System Depressants
Physiological Effects of Drugs processed this record on May 25, 2017