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Tanezumab in Osteoarthritis of the Knee

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: August 13, 2008
Last Update Posted: January 7, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Test the efficacy and safety of 3 doses in Osteoarthritis of the knee in patients.

Condition Intervention Phase
Arthritis Osteoarthritis Biological: tanezumab Biological: Placebo Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Phase 3 Randomized, Double Blind, Placebo-Controlled Multicenter Study Of The Analgesic Efficacy And Safety Of Tanezumab In Patients With Osteoarthritis Of The Knee

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • WOMAC function [ Time Frame: Week 16 ]
  • WOMAC pain [ Time Frame: Week 16 ]
  • Patient Global Assessment of Osteoarthritis [ Time Frame: Week 16 ]

Secondary Outcome Measures:
  • Womac pain, physical function and stiffness at other timepoints [ Time Frame: Weeks 2, 4, 8, 12, 16 and 32 ]
  • SF-36 [ Time Frame: Weeks 12 and 24 ]
  • Daily NRS scores [ Time Frame: daily to Week 32 ]
  • Safety (AEs, laboratory, ECGs, physical exam, vital signs) [ Time Frame: All weeks ]
  • Time to discontinuation [ Time Frame: All weeks ]

Enrollment: 697
Study Start Date: September 2008
Study Completion Date: November 2009
Primary Completion Date: September 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Tanezumab 10 mg Biological: tanezumab
IV tanezumab 10 mg at 1 dose every 8 weeks
Experimental: Tanezumab 5 mg Biological: tanezumab
IV tanezumab 5 mg at 1 dose every 8 weeks
Experimental: Tanezumab 2.5 mg Biological: tanezumab
IV tanezumab 2.5 mg at 1 dose every 8 weeks
Placebo Comparator: Placebo Biological: Placebo
IV placebo to match tanezumab at 1 dose every 8 weeks


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Osteoarthritis of the knee according to ACR criteria with a Kellgren-Lawrence x-ray grade of 2.
  • Unwilling or unable to take non-opiate pain medications, for whom non-opiate pain medications have not provided adequate pain relief or are candidates for knee injections arthroplasty or replace surgery.
  • Pain level and function levels as required by the protocol at Screening and Baseline.
  • Willing to discontinue pain medications (acetaminophen will be permitted up to a certain level) before and during the study.
  • Must agree to the contraceptive requirements of the protocol if applicable.
  • Must agree to the treatment plan, scheduled visits, and procedures of the protocol.

Exclusion Criteria:

  • Pregnancy or intent to become pregnant during the study
  • BMI greater than 39
  • other severe pain, significant cardiac, neurological or psychological conditions, or above the protocol limits for laboratory and blood pressure results
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00733902

  Show 65 Study Locations
Sponsors and Collaborators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Director, Clinical Trial Disclosure Group, Pfizer, Inc.
ClinicalTrials.gov Identifier: NCT00733902     History of Changes
Other Study ID Numbers: A4091011
First Submitted: August 11, 2008
First Posted: August 13, 2008
Last Update Posted: January 7, 2011
Last Verified: January 2011

Keywords provided by Pfizer:
monoclonal antibody
nerve growth factor
anti-nerve growth factor

Additional relevant MeSH terms:
Osteoarthritis, Knee
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases