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CompletedNCT01366014Updated Oct 14, 2020

A Study of ARRY-371797 in Patients With Osteoarthritis of the Knee

A Phase 2 interventional study of ARRY-371797, p38 inhibitor; oral and Oxycodone hydrochloride (HCl) extended release (ER), opioid agonist; oral in Osteoarthritis of the Knee, sponsored by Pfizer. Completed at 13 sites in United States. Open to participants aged 40 Years to 85 Years. Per ClinicalTrials.gov, last updated 2020-10-14.

Sponsored by Pfizer · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
157
Allocation
Randomized
Ages
40 Years to 85 Years
Sex
All
01

Study summary

This is a Phase 2 study, involving a 4-week treatment period, designed to test the ability of investigational study drug ARRY-371797 to reduce pain in patients with moderate to severe pain due to osteoarthritis (OA) of the knee, and to further evaluate the drug's safety. Approximately 150 patients from the US will be enrolled in this study.

02

Conditions studied

  • Osteoarthritis of the Knee

Keywords

  • osteoarthritis
  • knee
  • pain
  • NSAID
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 157 is above the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

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

04

Who can participate

Ages eligible
40 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • Diagnosis of OA of the knee, based on American College of Rheumatology (ACR) criteria, confirmed by X-ray (K-L Grade II/III within the last year).
  • At least moderate or severe pain due to OA in one knee.
  • On nonsteroidal anti-inflammatory drug (NSAID) 28 days previous to study start and willing to continue on NSAID throughout study.
  • Discontinuation of opioids prior to study start.
  • Additional criteria exist.

Key Exclusion Criteria:

  • Current or recent infection in the last 7 days; infection requiring hospitalization or parenteral antibiotics within the last 6 months; history of or currently active tuberculosis, hepatitis B or C, or human immunodeficiency virus (HIV).
  • Surgery on the index knee within the previous 6 months.
  • Trauma or other surgeries within the previous 8 weeks.
  • Specific abnormal laboratory values or electrocardiogram abnormalities.
  • Gastrointestinal surgery that may interfere with motility or absorption.
  • On non-stable dose of bisphosphonates, or any prior denosumab or parathyroid hormone (PTH) therapies.
  • Prior parenteral tumor necrosis factor (TNF) inhibitor or anti-nerve growth factor (NGF) therapies.
  • Intramuscular, intravenous or oral corticosteroids within the previous 6 weeks.
  • Intra-articular corticosteroids in the index knee within the previous 8 weeks or viscosupplementation in the index knee within the previous 4 months.
  • Currently enrolled in or participated in another clinical trial within the previous 3 months.
  • Additional criteria exist.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
157 participants (actual)

Study arms

  • Experimental
    ARRY-371797

    Drug: ARRY-371797, p38 inhibitor; oral

  • Active comparator
    Oxycodone HCl ER

    Drug: Oxycodone hydrochloride (HCl) extended release (ER), opioid agonist; oral

  • Placebo comparator
    Placebo

    Drug: Placebo; oral

Interventions

  • DrugARRY-371797, p38 inhibitor; oral

    multiple dose, single schedule

  • DrugOxycodone hydrochloride (HCl) extended release (ER), opioid agonist; oral

    multiple dose, single schedule

  • DrugPlacebo; oral

    matching placebo

06

What researchers measure

Primary outcomes

  1. Assess the efficacy of the study drug (versus placebo) in terms of change from baseline to week 4 in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain subscale score (index knee).

    Time frame: 4 weeks

Secondary outcomes

  1. Assess the efficacy of the study drug (versus placebo) in terms of change from baseline to week 4 in the WOMAC stiffness and physical function subscale scores (index knee).

    Time frame: 4 weeks

  2. Characterize the safety profile of the study drug in terms of adverse events, clinical laboratory tests, electrocardiograms and vital signs.

    Time frame: 5 weeks

  3. Characterize the pharmacokinetics of the study drug and metabolite as determined by plasma concentrations.

    Time frame: 4 weeks

07

Study locations

13 sites
  • Pfizer Investigational Site
    Phoenix, Arizona, United States
  • Pfizer Investigational Site
    Fort Lauderdale, Florida 33316, United States
  • Pfizer Investigational Site
    Pinellas Park, Florida 33781, United States
  • Pfizer Investigational Site
    Sarasota, Florida 34232, United States
  • Pfizer Investigational Site
    Watertown, Massachusetts, United States
  • Pfizer Investigational Site
    Olive Branch, Mississippi 38654, United States
  • Pfizer Investigational Site
    Charlotte, North Carolina, United States
  • Pfizer Investigational Site
    Raleigh, North Carolina, United States
  • Pfizer Investigational Site
    Winston-Salem, North Carolina, United States
  • Pfizer Investigational Site
    Duncansville, Pennsylvania 16635, United States
  • Pfizer Investigational Site
    Austin, Texas, United States
  • Pfizer Investigational Site
    Salt Lake City, Utah, United States
  • Pfizer Investigational Site
    Kenosha, Wisconsin, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 14, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01366014
Lead sponsor
Pfizer
Responsible party
Sponsor
First posted
Jun 3, 2011
Start date
Jun 2011
Primary completion
Jun 2012
Completion
Jun 2012
Last update
Oct 14, 2020

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

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

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This study is completed, as verified in Oct 2020. You cannot join it, but the record below documents what was studied.

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