Long Term Safety Study of Tanezumab in Chronic Low Back Pain

Study Overview
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Brief Summary
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The purpose of this study is to investigate the safety and efficacy of tanezumab for chronic low back pain. Patients who were randomized and treated with study medication in a previous chronic low back pain parent study will be eligible to enroll in this safety extension study at the Preferred Rollover Time Point visit or at the Early Termination visit of the parent study upon discontinuation due to lack of efficacy.

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

Conditions
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Low Back Pain

Intervention / Treatment
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* Biological: Tanezumab 20 mg
* Biological: Tanezumab 10 mg


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Tanezumab 20 mg<br> | Biological: Tanezumab 20 mg<br>* Tanezumab 20 mg administered IV every 8 weeks for 3 administrations followed by SC administration every 8 weeks for 4 administrations over a period of 64 weeks<br>|
| Experimental: Tanezumab 10 mg<br> | Biological: Tanezumab 10 mg<br>* Tanezumab 10 mg administered IV every 8 weeks for 3 administrations followed by SC administration every 8 weeks for 4 administrations over a period of 64 weeks<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) | AE: any untoward medical occurrence in participant who received study medication without regard to possibility of causal relationship. SAE: AE resulting in any of following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study medication and up to 112 days after last dose that were absent before treatment in this study or that worsened relative to pretreatment state. | Baseline up to 112 days after last dose of study treatment (up to 448 days) | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 4 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 4 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 8 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 8 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 16 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 16 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 24 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 24 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 32 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 32 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 40 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 40 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 48 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 48 | 
| Change From A4091012 (NCT00876187) Baseline in Neuropathy Impairment Score (NIS) at Week 56 | NIS: 74 items, assess muscle weakness, reflexes and sensation; scored separately for left, right limbs (37 items for each side). Components of muscle weakness (hip and knee flexion, hip and knee extension, ankle dorsiflexors, ankle plantar flexors, toe extensors, toe flexors) scored on scale 0 (normal) to 4 (paralysis), higher score=greater weakness. Components of reflexes (quadriceps femoris, triceps surae) and sensation (touch pressure, pin-prick, vibration, joint position) scored 0 = normal, 1= decreased, or 2 = absent. Total possible NIS score range 0-244, higher score=greater impairment. | A4091012: Baseline, A4091039: Week 56 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 4 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 4 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 8 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 8 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 16 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 16 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 24 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 24 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 32 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 32 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 40 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 40 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 48 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 48 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Scores (Worst, Least, Average, Right Now) at Week 56 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, to assess severity and impact of pain on daily functions. Question/item 1-4 (Q1-Q4) measure impact of pain (worst, least, average, right now). Question 5 (Q5) consists of 7 items which measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). | A4091012: Baseline, A4091039: Week 56 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 4 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 4 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 8 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 8 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 16 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 16 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 24 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 24 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 32 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 32 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 40 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 40 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 48 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 48 | 
| Change From A4091012 (NCT00876187) Baseline in Brief Pain Inventory-Short Form (BPI-sf) Pain Interference Scores (General Activity, Walking Ability, Normal Work, Sleep, Function Composite) at Week 56 | BPI-sf: 11-item self-report questionnaire consists of 5 questions, assess severity and impact of pain on daily functions. Q1-Q4 measure impact of pain (worst, least, average, right now). Q5 (7 items) measure level of interference of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). Each item answered on 11-point scale ranging from 0 (no pain/interference) to 10 (pain as bad as you can imagine/completely interferes). 7 items in Q5 averaged to obtain function composite score, range: 0 to 10; higher score=greater impairment. | A4091012: Baseline, A4091039: Week 56 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 4 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score was calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 4 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 8 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 8 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 16 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 16 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 24 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 24 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 32 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 32 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 40 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 40 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 48 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 48 | 
| Change From A4091012 (NCT00876187) Baseline in Roland-Morris Disability Questionnaire (RMDQ) Total Score at Week 56 | RMDQ: back-specific, participant administered questionnaire that assess how well participants with low back pain were able to function with regard to daily activities. The questionnaire consists of 24 statements and the participant is instructed to put a mark next to each appropriate statement. The number of statements marked are added up by the clinician. Total RMDQ score is calculated as the sum of number of statements checked. Total possible RMDQ score: 0 to 24, with higher scores indicated greater disability. | A4091012: Baseline, A4091039: Week 56 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 4 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 4 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 8 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 8 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 16 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 16 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 24 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 24 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 32 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 32 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 40 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 40 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 48 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 48 | 
| Change From A4091012 (NCT00876187) Baseline in Patient Global Assessment of Low Back Pain at Week 56 | Participants answered: Considering all ways your low back pain affects you, how are you doing today? Participants rated their condition using scale assessing symptoms and limitations to carry out normal daily activities. Score range: 1-5. 1: Very Good (No symptoms and limitations); 2: Good (Mild symptoms and no limitations); 3: Fair (Moderate symptoms and some limitations); 4: Poor (Severe symptoms and inability to carry out most activities); 5: Very Poor (Very severe, intolerable symptoms and inability to carry all activities). | A4091012: Baseline, A4091039: Week 56 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time to Discontinuation Due to Lack of Efficacy | Median time to discontinuation due to lack of efficacy was estimated using Kaplan-Meier method. | Baseline up to Week 56 | 
| Plasma Concentration of Tanezumab | Analysis was done by setting concentration values below the lower limit of quantification (LLOQ) to zero. | Baseline (Day 1), Week 8, 24, 40, 56, 64 | 
| Total Nerve Growth Factor (NGF) Concentration |  | Baseline (Day 1), Week 8, 24, 40, 56, 64 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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low back pain monoclonal antibody nerve growth factor