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OsteoarthritisPhase 3NCT00240786

An Effectiveness and Safety Study of Two Doses of Acetaminophen Extended Release Caplets in the Treatment of Osteoarthritis of the Hip or Knee

A Phase 3 study testing acetaminophen extended release in people with Osteoarthritis, run by Johnson & Johnson Consumer and Personal Products Worldwide.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to determine the safety and effectiveness of 650 mg and 1300 mg acetaminophen extended release given three times a day for the relief of signs and symptoms of osteoarthritis of the hip or knee for a period of 12 weeks. Read more about this study

Who is it for?
Ages 40 years and older
Conditions the study is for
Osteoarthritis
What is being tested?
acetaminophen extended release
How many people
483 participants
Where
No sites listed yet
Study dates
Apr 2002to Mar 2003
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Symptomats of osteoarthritis of the hip or knee for a minimum of six months
  • History of hip or knee pain due to osteoarthritis requiring the use of NSAIDs, acetaminophen, or another analgesic agent on a regular basis (>= three days per week) for at least three months before the screening visit
  • History of positive therapeutic benefit with acetaminophen use for osteoarthritis pain
  • History of osteoarthritis pain (moderate, moderately severe, or severe) of the hip or knee when not taking osteoarthritis analgesic medication
  • Must have a pain level of moderate or moderately severe for 24 hours over the previous 24 hours prior to the baseline visit, and at baseline, demonstrate a 20% or greater increase in the pain subscale score, relative to the score at screening

Who cannot join

  • History of surgery, including arthroscopy, or major trauma to the study joint in the previous six months before the screening visit
  • Grade 1 or grade 4 severity of the study joint based on the Kellgren and Lawrence radiographic criteria
  • Maximum osteoarthritis pain intensity of none, mild or severe experienced over the previous 24 hours of the baseline visit
  • Signs of clinically important active inflammation of the study knee joint including redness, warmth and/or a large, bulging effusion with the loss of normal contour at the screening and/or baseline visits

About this study

Official title: A Randomized, Double-Blind, Placebo-Controlled Study Evaluating Acetaminophen Extended Release (1950 mg/Day or 3900 mg/Day) in the Treatment of Osteoarthritis of the Hip or Knee

The purpose of this study is to determine the safety and effectiveness of 650 mg and 1300 mg acetaminophen extended release given three times a day for the relief of signs and symptoms of osteoarthritis of the hip or knee for a period of 12 weeks.

Read the detailed description

This is a randomized, double-blind, placebo-controlled study to determine the safety and effectiveness of 650 mg and 1300 mg acetaminophen extended release given three times a day as compared with placebo, for the relief of signs and symptoms of osteoarthritis of the hip or knee for a period of 12 weeks. Propoxyphene Hydrochloride capsules 65 mg are used as rescue medication if subjects experience inadequate pain relief. The primary efficacy assessments are the average change from baseline to the final on-therapy visit for the WOMAN pain subscale score and the WOMAC physical function subscale scare, and the subject's average global assessment of their response to therapy through the final on-therapy visit. Safety assessments at study visits consist of monitoring adverse events, vital signs, study joint assessments and clinical laboratory determinations. The hypothesis is that 1950 mg per day and/or 3900 mg per day acetaminophen extended release are superior to placebo for the relief of the signs and symptoms of osteoarthritis of the hip or knee with respect to all three primary efficacy endpoints. Treatment consisted of either one 650 mg acetaminophen extended release caplet plus one placebo caplet (acetaminophen 1950 mg group); two 650 mg acetaminophen extended release caplets (acetaminophen 3900 mg group); or two placebo caplets administered orally every eight hours for 12 weeks.

Conditions
Osteoarthritis
Being tested
acetaminophen extended release
Keywords
osteoarthritis hip, osteoarthritis knee, acetaminophen
Medical subject headings
Osteoarthritis, Osteoarthritis, Hip, Osteoarthritis, Knee

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • acetaminophen extended releaseDrug

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Average change from baseline to the final on-therapy visit for - WOMAC pain subscale score; WOMAC physical function subscale score; and subject's average global assessment of response to therapy through the final on-therapy visit

Secondary outcomes (1)
  1. Average change from baseline to final on-therapy visit for WOMAC stiffness subscale score; average change from baseline to final on-therapy visit for total WOMAC Index; average number of propoxyphene HCl rescue medication capsules per day while in study

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Oct 2005 (estimated)
  2. Study startApr 2002
  3. Study completionMar 2003

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Enrolment
483 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00240786
Sponsor's protocol ID
CR002485
Status last verified
Jun 2011
First submitted
14 Oct 2005
Last updated
29 Jun 2011
Results posted
No

Publications

  • Kuffner EK, Temple AR, Cooper KM, Baggish JS, Parenti DL. Retrospective analysis of transient elevations in alanine aminotransferase during long-term treatment with acetaminophen in osteoarthritis clinical trials. Curr Med Res Opin. 2006 Nov;22(11):2137-48. doi: 10.1185/030079906x148346.

    PubMed 17076974

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing acetaminophen extended release in people with Osteoarthritis, run by Johnson & Johnson Consumer and Personal Products Worldwide.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 29 Jun 2011. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Average change from baseline to the final on-therapy visit for - WOMAC pain subscale score; WOMAC physical function subscale score; and subject's average global assessment of response to therapy through the final on-therapy visit. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00240786, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jun 2011.

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