A Study for Adult Patients With Fibromyalgia

Phase 4

Completed

Conditions: Fibromyalgia, Primary
Fibromyalgia, Secondary

Interventions: Drug: Duloxetine
Drug: Placebo

Registration Number: NCT00965081

Lead Sponsor: Eli Lilly and Company

Brief Summary: The main purpose of this study is to determine if 30 milligrams (mg) of duloxetine is effective in the treatment of fibromyalgia compared to placebo.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 308

Inclusion Criteria

Meet study criteria for fibromyalgia diagnosis.

Exclusion Criteria

Have previously or are currently taking duloxetine.
Have been diagnosed with certain psychoses, bipolar or schizoaffective disorder
Have pain symptoms that are difficult to differentiate from fibromyalgia.
Have seizure disorder, uncontrolled narrow angle glaucoma, or acute liver injury (such as hepatitis) or severe cirrhosis.
Have had any primary Axis 1 diagnosis other than major depressive disorder or generalized anxiety disorder within the past year.
Are pregnant or breast-feeding
Have a current or previous diagnosis of rheumatoid, infectious or inflammatory arthritis or an autoimmune disease
Have a regional pain syndrome, failed back syndrome or chronic localized pan related to any past surgery
Have a serious unstable medical illness
Have a history of substance abuse or dependence within the past year

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Duloxetine	Duloxetine	-
Placebo	Placebo	-

Primary Outcome Measures

Name	Time	Method
Change From Baseline to 12-Week Endpoint in the Brief Pain Inventory (BPI) "24-Hour Average Pain" Item (Question 3) of the BPI-Modified Short Form Score	Baseline, 12 weeks	BPI Average Pain score ranges from 0 (no pain) to 10 (pain as bad as you can imagine). Treatment group difference in Least Squares (LS) Means changes from analysis of covariance (ANCOVA) with terms for treatment group, pooled investigators, baseline. Baseline-observation-carried-forward (BOCF) method used to impute endpoint value for those who discontinued initial double-blind therapy (DBT) due to adverse event (AE); last non-missing observation during initial DBT used to impute missing endpoint for all others. Analyses included all participants having non-missing baseline and endpoint.

Secondary Outcome Measures

Name	Time	Method
Change From Baseline to 12-Week Endpoint in the Brief Pain Inventory (BPI) - Modified Short Form	Baseline, 12 weeks	BPI-Modified Short Form mean interference score ranges from 0 (does not interfere) to 10 (completely interferes) for pain in past 24 hours for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life. Treatment group difference in the Least Squares (LS) Means changes from baseline to endpoint is from an analysis of covariance (ANCOVA) with terms for treatment group, pooled investigators and baseline. Last-observation-carried forward (LOCF) endpoint defined as last available post-baseline value obtained during initial double-blind therapy.
Patient Global Impression - Improvement (PGI-I) at Endpoint	12 weeks	The PGI-I scale is a patient-rated instrument that measures perceived improvement in symptoms. It is a 7-point scale: score of 1 is "very much better," 4 is "no change," and 7 is "very much worse." Treatment group difference in Least Squares (LS) Means at endpoint is from an analysis of covariance (ANCOVA); model included terms for treatment group, pooled investigators and baseline PGI-Severity (PGI-S).
Clinical Global Impression of Improvement (CGI-I) for Depression at Endpoint	12 weeks	The CGI-I measures clinician's perception of patient improvement at time of assessment compared with start of treatment. Scores range from 1 (very much improved) to 7 (very much worse). The treatment group difference in Least Squares (LS) Means at endpoint is from an analysis of covariance (ANCOVA). The model included terms for treatment group, pooled investigators and baseline CGI-Severity (CGI-S).
Change From Baseline to 12-Week Endpoint Beck Depression Inventory-II (BDI-II)	Baseline, 12 weeks	The BDI-II is a 21-item, patient-completed questionnaire to assess characteristics of depression. Each of the 21 items corresponding to a symptom of depression is summed to give a single score. There is a 4-point scale for each item ranging from 0 to 3 (0 = not present; 3 = present in the extreme). The treatment group difference in the Least Squares (LS) Means change from baseline to endpoint is from an analysis of covariance (ANCOVA). The model included terms for treatment group, pooled investigators and baseline.
Change From Baseline to 12-Week Endpoint Fibromyalgia Impact Questionnaire (FIQ)	Baseline, 12 weeks	FIQ is a 20-item self-administered questionnaire that measures fibromyalgia (FM) patient status, progress, and outcomes over the past week. The total score ranges from 0 to 80 with higher scores reflecting a more negative impact of FM. The treatment group difference in the Least Squares (LS) Means change from baseline to endpoint is from an analysis of covariance (ANCOVA). The model included terms for treatment group, pooled investigators and baseline.
Change From Baseline to 12-Week Endpoint Beck Anxiety Inventory (BAI)	Baseline, 12 weeks	The BAI is a 21-item patient-completed questionnaire designed to assess the characteristics of anxiety. Each item is rated on a 4-point scale (0=not present; 3=present in the extreme). The total score ranges from 0 to 63; the higher the score, the more severe the anxiety symptoms. The treatment group difference in the Least Squares (LS) Means at endpoint is from an analysis of covariance (ANCOVA). The model included terms for treatment group, pooled investigators and baseline.
Change From Baseline to 12-Week Endpoint 36-Item Short-Form Health Survey (SF-36)	Baseline, 12 weeks	SF-36 has 36 items with 8 domains: physical functioning, social functioning, bodily pain, vitality, mental health, role-physical, role-emotional, general health; each scored on 0 to 100 scale. Higher scores indicate better status. Mental component summary (MCS) and physical component summary (PCS) based on 8 SF-36 domains. Scales scored using norm-based methods; mean is 50 and standard deviation is 10 in U.S. population. Treatment group difference in Least Squares (LS) Means at endpoint from analysis of covariance. Terms for treatment group, pooled investigators, baseline in model.
Number of Participants With Suicidal Behaviors and Ideations Collected by Columbia -Suicide Severity Rating Scale (C-SSRS)	Baseline through 12 weeks	The C-SSRS is a scale capturing occurrence, severity, and frequency of suicide-related thoughts and behaviors. The number of participants with suicidal behaviors and ideations are provided. Suicidal behavior: a "yes" answer to any of 5 suicidal behavior questions which include: preparatory acts or behavior, aborted attempt, interrupted attempt, actual attempt, and completed suicide. Suicidal ideation: a "yes" answer to any 1 of 5 suicidal ideation questions which include wish to be dead and 4 different categories of active suicidal ideation.

Trial Locations

Locations (1): For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
🇲🇽
Morelia, Mexico
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
🇲🇽Morelia, Mexico