Suspended

A RANDOMIZED, MULTICENTER, LONG TERM STUDY OF THE SAFETY OF TANEZUMAB IN PATIENTS WITH CHRONIC LOW BACK PAIN

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What is being tested

Tanezumab 20 mg

+ Tanezumab 10 mg

Biological
Who is being recruted

Back Pain+3

+ Neurologic Manifestations

+ Pain

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
Study Start: August 2009
See protocol details

Summary

Principal SponsorPfizer
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: August 20, 2009

Actual date on which the first participant was enrolled.

This study was terminated on 30 November 2010 following a US FDA clinical hold for tanezumab chronic low back pain clinical studies which halted dosing and enrollment of patients on 19 July 2010 for potential safety issues.

Official TitleA RANDOMIZED, MULTICENTER, LONG TERM STUDY OF THE SAFETY OF TANEZUMAB IN PATIENTS WITH CHRONIC LOW BACK PAIN
NCT00924664
Principal SponsorPfizer
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

849 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Back PainNeurologic ManifestationsPainSigns and SymptomsPathological Conditions, Signs and SymptomsLow Back Pain

Criteria

Inclusion Criteria: * Written informed consent prior to completing any of the study procedures. * Female patients must meet one of the following criteria: 1\) Female patients of non childbearing potential - Must be post menopausal, defined as women who are \>=45 years old with amenorrhea for 24 consecutive months (regardless of FSH levels), or women who are amenorrheic for at least 1 year AND have a serum Follicle Stimulating Hormone (FSH) level greater than 30 IU/L at Screening for the parent double blind CLBP study; or Must be surgically sterile, defined as having had a hysterectomy and/or bilateral oophorectomy. 2.) Female patients of child bearing potential: must not be pregnant or lactating, and must be abstinent or use adequate contraception (2 forms of birth control, one of which must be a barrier method), and must have a negative serum pregnancy test at Screening (within 30 days prior to Baseline) and a negative urine pregnancy test at Baseline prior to initial dosing * Male patients must agree that they and their female spouses / partners will use adequate contraception (2 forms of birth control, one of which must be barrier method) or be of non childbearing potential. * Females of child bearing potential and males must be willing to use approved methods of contraception from commencement of screening procedures until 16 weeks after the last dose of IV study medication. * Patient must be able to comply with lifestyle guidelines, scheduled visits, treatment plan, laboratory tests, and other study procedures * Patient has been treated in a parent tanezumab double blind CLBP study * Patient has completed the Preferred Rollover Time Point visit of the double blind CLBP parent study or has been withdrawn for lack of efficacy. At least eight weeks but no more than 12 weeks have elapsed since the last study medication infusion in the parent study. Patients are permitted to enter the extension study up to 12 weeks after their last dose of study medication in their parent study (or 4 weeks after the End of Treatment visit) Exclusion Criteria: * Failed screening in a parent tanezumab double blind CLBP study * Withdrawn from a parent tanezumab double blind CLBP study for an adverse event * Pregnant women, lactating mothers, women suspected of being pregnant, and women who wish to become pregnant during the course of clinical study * Use of any investigational medication within 30 days prior to Baseline (3 months for any investigational biological other than tanezumab) or plans to receive an investigational medication other than the study medication during the course of this study * Patients who exited the parent double blind CLBP study because of lack of compliance, protocol violation (including not meeting entrance criteria), no longer willing to participate (for reasons other than lack of efficacy), or were lost to follow up in the parent double blind study * Patients who were randomized into the parent study in violation of inclusion or exclusion criteria but who were not withdrawn from the parent study; * Any other condition, which in the opinion of the Investigator, would put the patient at increased safety risk or otherwise make the patient unsuitable for this study

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental

Group II

Experimental

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 149 locations

Suspended

Pinnacle Research Group, LLC

Anniston, United StatesOpen Pinnacle Research Group, LLC in Google Maps
Suspended

Pinnacle Research Group, Anniston Medical Clinic

Anniston, United States
Suspended

Pinnacle Research Group

Anniston, United States
Suspended

Simon Williamson Clinic, PC

Birmingham, United States
Suspended149 Study Centers