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Combined Behavioral and Analgesic Trial for Fibromyalgia

Phase 3 Double Blind Randomized Study Comparing Drug Treatment (Tramadol Versus Placebo) and Behavioral Health Treatments (Cognitive Behavioral Therapy Versus Health Education) for Patients With Fibromyalgia

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01598753
Acronym
COMBAT-FM
Enrollment
134
Registered
2012-05-15
Start date
2012-05-31
Completion date
2018-07-31
Last updated
2019-06-26

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

Conditions

Fibromyalgia

Brief summary

This is a randomized control study that involves a combination of a drug treatment, behavioral health, and placebo controls. Some participants will receive a medication approved by the Food and Drug Administration for treatment of moderate to moderately severe pain called Tramadol HC1 IR. Others will receive an inactive pill, called a placebo. There will also be 2 different types of behavioral health treatments, Cognitive-Behavior Therapy (CBT) and Health Education (HE) both of which have been recommended for the treatment of patients with FM by the American Pain Society. There are 4 possible study treatment combinations: 1. Tramadol + CBT, 2. Tramadol + HE, 3. Placebo + CBT, 4. Placebo + HE. Although Tramadol, CBT, and HE have been shown to have some benefits for FM patients, there have been no studies that have evaluated the combination of medication and a behavioral health treatment. The primary purpose of this study is to compare the benefits of the 4 combinations listed.

Interventions

DRUGTramadol

50 mg tablets titrated up to 2 tablets four times per day for a maximum dose of 400mg per day. Minimum accepted dose of 200mg per day

DRUGPlacebo

Pharmacological inactive tablet, 50mg tablets titrated to 2 tabs per day up to 400mg

BEHAVIORALCognitive Behavior Therapy for FM

Subjects will be seen for 8 weekly 50 minute sessions of Cognitive Behavior Therapy that has been specifically tailored for Fibromyalgia patients.

BEHAVIORALHealth Education

Subjects will receive 8 weekly 50 minute sessions of Health Education on Fibromyalgia

Sponsors

University of Washington
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
21 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Males and Females 21-70 * Diagnosis of Fibromyalgia * Current primary care physician * Fluent in English

Exclusion criteria

* Rheumatologic disorders * Drug and alcohol abuse in the past year * Psychiatric hospitalization in the past 6 months * Current use of Tramadol * Certain antidepressant and other pain medications

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With a 30% Improvement in Pain or 20% Improvement in FunctionBaseline (one week prior to drug titration) to post-treatment (approximately 11 weeks after baseline).The primary outcome is a reduction of at least 30% on the pain score (mean for 5-day daily pain diary) or improvement of 20% physical function (FIQR) from baseline (pre-treatment) to post-treatment. Individuals who achieve such decrease in pain or increase in function are labeled responders.

Countries

United States

Participant flow

Recruitment details

Participants with fibromyalgia (FM) were enrolled at 2 sites, the University of Washington in Seattle WA and the University of Rochester in Rochester NY.

Pre-assignment details

Participants underwent a physical exam to rule out conflicting medical conditions and confirm a diagnosis of FM (1990 ACR criteria). A 5-day baseline diary was distributed and required a mean daily pain score ≥ 4 and ≤ 9. A urine drug test with no illicit drugs and a negative urine pregnancy test (when applicable) were also required at baseline.

Participants by arm

ArmCount
Placebo and Health Education
Participants received a matching placebo and 8 weekly 50 minute sessions of health education on Fibromyalgia.
37
Tramadol and Health Education
Participants received between 200mg and 400mg of Tramadol daily and 8 weekly 50 minute sessions of health education on Fibromyalgia.
31
Placebo and Cognitive Behavioral Therapy
Participants received matching placebo and 8 weekly 50 minute sessions of Cognitive Behavioral Therapy that had been specifically tailored for Fibromyalgia patients.
32
Tramadol and Cognitive Behavioral Therapy
Participants received between 200mg and 400mg of Tramadol daily and 8 weekly 50 minute sessions of Cognitive Behavioral Therapy that had been specifically tailored for Fibromyalgia patients.
34
Total134

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event1917
Overall StudyLost to Follow-up4375
Overall StudyPhysician Decision0102
Overall StudyWithdrawal by Subject7201

Baseline characteristics

CharacteristicPlacebo and Health EducationTramadol and Health EducationPlacebo and Cognitive Behavioral TherapyTramadol and Cognitive Behavioral TherapyTotal
Age, Continuous50.3 years
STANDARD_DEVIATION 12.9
51.2 years
STANDARD_DEVIATION 10.8
48.9 years
STANDARD_DEVIATION 13.1
44.64 years
STANDARD_DEVIATION 13.1
48.7 years
STANDARD_DEVIATION 12.7
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants2 Participants2 Participants1 Participants6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
36 Participants29 Participants30 Participants33 Participants128 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
1 Participants2 Participants1 Participants2 Participants6 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants1 Participants3 Participants6 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
White
35 Participants25 Participants29 Participants28 Participants117 Participants
Sex: Female, Male
Female
34 Participants28 Participants30 Participants31 Participants123 Participants
Sex: Female, Male
Male
3 Participants3 Participants2 Participants3 Participants11 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 370 / 310 / 320 / 34
other
Total, other adverse events
23 / 3727 / 3121 / 3225 / 34
serious
Total, serious adverse events
0 / 370 / 310 / 320 / 34

Outcome results

Primary

Number of Participants With a 30% Improvement in Pain or 20% Improvement in Function

The primary outcome is a reduction of at least 30% on the pain score (mean for 5-day daily pain diary) or improvement of 20% physical function (FIQR) from baseline (pre-treatment) to post-treatment. Individuals who achieve such decrease in pain or increase in function are labeled responders.

Time frame: Baseline (one week prior to drug titration) to post-treatment (approximately 11 weeks after baseline).

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo and Health EducationNumber of Participants With a 30% Improvement in Pain or 20% Improvement in Function24 Participants
Tramadol and Health EducationNumber of Participants With a 30% Improvement in Pain or 20% Improvement in Function13 Participants
Placebo and Cognitive Behavioral TherapyNumber of Participants With a 30% Improvement in Pain or 20% Improvement in Function21 Participants
Tramadol and Cognitive Behavioral TherapyNumber of Participants With a 30% Improvement in Pain or 20% Improvement in Function15 Participants

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