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CompletedNCT00609557Updated Feb 7, 2008

A Single-Blind Placebo Run-in Study of Duloxetine for Activity-Limiting Osteoarthritis Pain

A Phase 4 interventional study of duloxetine in Osteoarthritis and Pain, sponsored by University of Washington. Completed. Open to participants aged 50 Years to 80 Years. Per ClinicalTrials.gov, last updated 2008-02-07.

Sponsored by University of Washington · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
25
Allocation
Non-randomized
Ages
50 Years to 80 Years
Sex
All
01

Study summary

This will be a single-blind, placebo-run-in trial. Subjects will be informed that they may receive duloxetine or placebo during the course of the trial. All subjects will, in fact, receive placebo for the first two weeks. All subjects will then be placed on 60-90mg per day of duloxetine. Primary outcome assessment will compare pain intensity at 2 weeks (after placebo) to that at 12 weeks (after 10 weeks of duloxetine treatment).

Study Hypothesis:

In subjects who continue to have activity-limiting osteoarthritis pain after treatment with acetaminophen or non-steroidal anti-inflammatory agents, 60-90 mg Duloxetine per day over 10 weeks will provide significant additional pain relief over that achieved with placebo(> 30% reduction after Duloxetine treatment).

02

Conditions studied

  • Osteoarthritis
  • Pain

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Keywords

  • osteoarthritis pain
  • activity limitation
  • antidepressant
  • depression
  • single-blind
03

In context

Osteoarthritis

4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.

This study's enrollment of 25 is below the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

University of Washington is the lead sponsor of 1,397 studies on the registry; 225 are open to participants now.

Of its 154 completed or terminated interventional studies of FDA-regulated products, 132 (86%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 50-80
  • Physician diagnosis of OA in hip, knee or spine.
  • Significant activity limitation due to pain for at least one month on the Western Ontario and McMasters University Osteoarthritis Index (WOMAC) and average pain >5/10 on Brief Pain Inventory despite adequate treatment with acetaminophen or NSAIDs. [This will identify an OA group with significant psychological distress and a desire for treatment.]
  • Depression status is not restricted, but will be monitored with PRIME-MD interview and the SCL-20. We anticipate depressive symptoms will be common in this population due to the above requirement for activity limitation.

Exclusion criteria

Exclusion Criteria:

  • Cannot read and write English
  • Significant cognitive impairment
  • History of psychosis or mania
  • Current suicidal ideation

    • Current substance abuse or dependence
    • Current use of opioids or any antidepressant medication
    • Use of investigational drug within the past month
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
Single (Participant)
Enrollment
25 participants (actual)

Study arms

  • Experimental
    A

    All subjects receive placebo for the first two weeks and then duloxetine for the next 10 weeks, but they are blind to what they are receiving.

    Drug: duloxetine

Interventions

  • Drugduloxetine

    Weeks 0-2 placebo Weeks 2-3 30mg duloxetine Weeks 3-4 60mg duloxetine Weeks 4-12 60-90mg duloxetine Week 13 30 mg duloxetine Week 14 stop

06

What researchers measure

Primary outcomes

  1. Difference in average pain intensity on Brief Pain Inventory

    Time frame: between 2 weeks and 12 weeks

  2. Difference in pain intensity on Western Ontario McMasters University Osteoarthritis Index (WOMAC)

    Time frame: Difference between 2 weeks and 12 weeks

Secondary outcomes

  1. Difference in pain interference on Western Ontario McMasters University Osteoarthritis Index (WOMAC)

    Time frame: Difference between 2 and 12 weeks

  2. Difference in role function as assessed by the Sheehan Disability Scales

    Time frame: Difference between 2 and 12 weeks

  3. Difference on observed physical function as assessed by the Aggregated Locomotor Function score

    Time frame: Difference between 2 and 12 weeks

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 7, 2008, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00609557
Lead sponsor
University of Washington
Collaborators
Eli Lilly and Company
First posted
Feb 7, 2008
Start date
Sep 2004
Primary completion
Feb 2007
Completion
Feb 2007
Last update
Feb 7, 2008

Study contacts

Mark D. Sullivan, M.D., Ph.D.
principal investigator · University of Washington

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2008. You cannot join it, but the record below documents what was studied.

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