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RN624 In Adult Patients With Chronic Low Back Pain

Primary Purpose

Low Back Pain

Status
Completed
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Naproxen
Placebo
PF-04383119 (RN624)
Sponsored by
Pfizer
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Low Back Pain

Eligibility Criteria

18 Years - 90 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Male or female of any race, >18 years of age and have BMI ≤39 kg/m2
  • Present with duration of chronic low back pain of ≥3 months requiring regular use of analgesic medication (>4 days per week for the past month)
  • Primary location of low back pain is between the 12th thoracic vertebra and the lower gluteal folds, with or without radiation into the posterior thigh, classified as Category 1 or 2 according to the classification of the Quebec Task Force in Spinal Disorders
  • Must have a score of ≥4 for Low Back Pain Intensity (NRS) while on current treatment at Screening, and completes at least 4 daily pain diaries during the 5 days prior to Randomization, with an average Low Back Pain Intensity (NRS) score of ≥4

Exclusion Criteria:

  • Back pain due to visceral disorder (i.e. endometriosis) or Back pain due to recent major trauma (i.e. vertebral fracture, post-traumatic spondylolisthesis)
  • History of lumbosacral radiculopathy, spinal stenosis associated with neurological impairment, or neurogenic claudication
  • Osteoporotic compression fracture within the last 6 months
  • Known history of: Rheumatoid arthritis; Seronegative spondyloarthropathy (i.e., ankylosing spondylitis, psoriatic arthritis, reactive arthritis, inflammatory bowel disease-related arthropathy); Paget's disease of spine, pelvis or femur; Fibromyalgia; Tumors or infections of the spinal cord
  • Patients receiving acetaminophen only to manage their chronic low back pain
  • Any uncontrolled or untreated chronic disease

Sites / Locations

  • Pinnacle Research Group LLC
  • Radiant Research
  • Radiant Research - Phoenix Southeast
  • Radiant Research
  • Advanced Clinical Research Institute
  • University of California San Diego
  • Doctors Medical Center of Walton County
  • SJS Clinical Research, Inc.
  • Adult Medicine Specialists
  • Genesis Research International
  • Collier Neurologic Specialists
  • Cotton-O'Neil Clinical Research
  • Cotton-O'Neil Clinic
  • Heartland Research Associates
  • Northeast Medical Research Associates, Inc
  • Clinical Pharmacology Study Group
  • Spence Medical Research
  • Radiant Research, Inc.
  • Quality Clinical Research, Inc.
  • The Medical Research Network, LLC
  • North State Clinical Research, PLLC
  • Wake Internal Medicine Consultants, Inc.
  • Wake Research Associates
  • Summit Research Network (Oregon), Inc.
  • Allegheny Pain Management
  • New England Center for Clinical Research
  • Partners in Clinical Research
  • Omega Medical Research
  • Radiant Research
  • Advanced Therapeutics, Inc.
  • Johnson City Internal Medicine
  • DiscoveResearch, Incorporated
  • Advances In Health, Inc.
  • Centex Research
  • Immediate Medical Care
  • Radiant Research San Antonio
  • Independence Family Medicine
  • Summit Research Network (Seattle) LLC

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Active Comparator

Placebo Comparator

Experimental

Arm Label

Naproxen

Placebo

RN624

Arm Description

Outcomes

Primary Outcome Measures

Change From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score at Week 6
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain). Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.

Secondary Outcome Measures

Change From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score at Week 1, 2, 4, 8 and 12
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Change From Baseline in Average Low Back Pain Intensity (LBPI) Score Over Weeks 1 to 4, 1 to 8, 1 to 12, 5 to 8, and 5 to 12
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Change from baseline was calculated as the average of each specified week interval (Week 1 to 4, 1 to 8, 1 to 12, 5 to 8, 5 to 12) values minus the baseline value.
Change From Baseline in Modified Brief Pain Inventory-short Form (mBPI-sf) Scores for Worst Pain and Average Pain at Week 1, 2, 4, 6, 8 and 12
The mBPI-sf was a self-administered questionnaire used to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions (Q) 1-4 assessed the magnitude of pain (Q1 for worst pain, Q2 for least pain, Q3 for average pain, Q4 for pain right now) on an 11-point NRS ranging from 0 (no pain) to 10 (pain as bad as you can imagine), with lower scores indicating less pain. Question 5 consisted of 7 sub-items (A to G; general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life) which measured the level of interference of pain on daily functions. Each sub-item was assessed on an 11-point NRS ranging from 0 (does not interfere) to 10 (completely interferes). Results are reported for worst and average pain score, each ranging from 0 (no pain) to 10 (pain as bad as you can imagine), with lower scores indicating less pain.
Number of Participants With Average Low Back Pain Intensity (LBPI) Score of 2 or Less
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Participants were classified as responders if average LBPI score was 2 or less, and as non-responders if average LBPI score was greater than (>) 2. Participants with average LBPI score of 2 or less were reported.
Number of Participants With Cumulative Percent (%) Reduction From Baseline in Average Low Back Pain Intensity (LBPI) Score at Week 6
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Number of participants with cumulative reduction (as percent) (greater than 0% ; >= 10, 20, 30, 40, 50, 60, 70, 80 and 90%; = 100 %) in Average LBPI score from Baseline at Week 6 were reported, participants (%) are reported more than once in categories specified.
Number of Participants With at Least 30% and 50% Sustained Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain) with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Participants with >=30% or >=50% reduction from baseline in daily average LBPI score that was maintained for a minimum duration of 4 consecutive days were reported.
Number of Participants With at Least 30% and 50% Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Number of participants with >=30% and >=50% reduction from Baseline in daily average LBPI score were reported.
Time to Achieve at Least 30% and 50% Sustained Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Time to achieve >=30% or >=50% sustained reduction from baseline (i.e. reduction from baseline in daily average LBPI score that was maintained for a total of 4 consecutive days) was summarized using the Kaplan-Meier estimates of the median time to 30% and 50% response. Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Total Duration of at Least 30% and 50% Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Total duration of response was defined as the total number of days with >=30% or >=50% reduction from baseline in the daily average LBPI score. Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Change From Baseline in Roland-Morris Disability Questionnaire Total Score at Week 1, 2, 4, 6, 8, and 12
Roland-Morris Disability Questionnaire: low back pain-specific, participant administered questionnaire that assessed how well participants with low back pain were able to function with regard to daily activities. The questionnaire consisted of 24 statements and the participants were instructed to put a mark next to each appropriate statement if it described their pain on the day of assessment. The number of statements marked were added up by the clinician. Total RMDQ score was calculated as the sum of number of statements checked. Total possible score ranged from 0 to 24, with higher scores indicated greater disability.
Change From Baseline in Modified Brief Pain Inventory-short Form (mBPI-sf) Scores for Pain Interference With Function (Composite Score), General Activity, Walking Ability, Normal Work and Sleep Scores at Week 1, 2, 4, 6, 8 and 12
The mBPI-sf was a self-administered questionnaire used to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions 1 to 4 assessed the magnitude of pain (worst, least, average, right now) on an 11-point NRS ranging from 0 (no pain) to 10 (pain as bad as you can imagine). Question 5 consisted of 7 sub-items (general activity [GA], mood, walking ability [WA], normal work [NW], relations with other people, sleep, enjoyment of life) which measured the level of interference of pain on daily functions. Each sub-item was assessed on an 11-point NRS ranging from 0 (did not interfere) to 10 (completely interfere). The response from 7 sub-items of question 5 were averaged to obtain pain interference composite score (CS), range: 0 to 10 (higher score=more interference).
Number of Participants With Change From Baseline in Patient's Global Assessment of Low Back Pain (Disease Activity) Score at Week 1, 2, 4, 6, 8 and 12
Patient's global assessment of low back pain scale assessed participants overall impression of disease activity. Participants answered: "Considering all the ways your low back pain affects you, how are you doing today?" Participants responded using a 5-point Likert scale with a score of 1 being the best (very good) and a score of 5 being the worst (very poor). Participants who reported a change of -4, -3, -2, -1, 0, 1, 2, 3, 4 from Baseline in Patient's Global Assessment of Low Back Pain (Disease Activity) score at specified weeks were presented.
Number of Participants With Each Response Level of Patient's Global Evaluation of Study Medication
Participants answered: "In all ways, how would you rate your overall response to the study medication today?" Participants responded using a 4-point Likert scale where 1 = poor, 2 = fair, 3 = good and 4 = excellent. Higher score indicated better overall response to the treatment.
Number of Participants Who Discontinued the Study Due to Lack of Efficacy
Time to Discontinuation Due to Lack of Efficacy
Median time to discontinuation due to lack of efficacy was estimated using Kaplan-Meier method. Median was not estimable if the percentage of participants who discontinued due to lack of efficacy was below 50%.
Number of Participants With Chronic Low Back Pain (CLBP) Response
Participants were considered as CLBP responders if they had achieved a reduction of >=30% in daily average LBPI score from baseline, an increase of >=30% in patient's global assessment of low back pain (disease activity) from baseline, and no worsening (increase) in RMDQ total score from baseline at specified week. Daily average low back pain assessed on an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Patient's global assessment of low back pain assessed using a 5-point Likert scale with a score of 1 being the best (very good) and a score of 5 being the worst (very poor). RMDQ: low back pain-specific, participant administered questionnaire consisted of 24 statements and participants were instructed to put a mark next to each appropriate statement if it described their pain on the day of assessment. Total RMDQ score was calculated as sum of number of statements checked. Total possible score ranged from 0 to 24, with higher scores indicated greater disability.
Number of Participants Who Used Rescue Medications
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. Number of participants with any use of rescue medication during the particular study week were summarized.
Duration of Rescue Medication Use
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. The number of days of rescue medication use during the particular week were summarized.
Amount of Rescue Medication Taken
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. The total dosage of acetaminophen (in mg) in each particular week was summarized.

Full Information

First Posted
December 21, 2007
Last Updated
June 17, 2021
Sponsor
Pfizer
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1. Study Identification

Unique Protocol Identification Number
NCT00584870
Brief Title
RN624 In Adult Patients With Chronic Low Back Pain
Official Title
PHASE II RANDOMIZED, DOUBLE-BLIND, PLACEBO-AND ACTIVE CONTROLLED, MULTICENTER, PARALLEL GROUP PROOF OF CONCEPT STUDY OF THE ANALGESIC EFFECTS OF RN624 IN ADULT PATIENTS WITH CHRONIC LOW BACK PAIN
Study Type
Interventional

2. Study Status

Record Verification Date
June 2021
Overall Recruitment Status
Completed
Study Start Date
July 5, 2007 (Actual)
Primary Completion Date
September 2, 2008 (Actual)
Study Completion Date
September 2, 2008 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Pfizer

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
The primary objective of this study is to evaluate the analgesic efficacy of RN624 compared with placebo and compared with naproxen in the treatment of adult patients with chronic low back pain.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Low Back Pain

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
220 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Naproxen
Arm Type
Active Comparator
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Title
RN624
Arm Type
Experimental
Intervention Type
Drug
Intervention Name(s)
Naproxen
Intervention Description
Oral naproxen 500 mg twice daily for Weeks 1-12.
Intervention Type
Drug
Intervention Name(s)
Placebo
Intervention Description
Single IV infusion of placebo on Day 1 and placebo for naproxen twice daily for Weeks 1-12.
Intervention Type
Drug
Intervention Name(s)
PF-04383119 (RN624)
Intervention Description
Single IV infusion of 200 micrograms/kg RN624 on Day 1
Primary Outcome Measure Information:
Title
Change From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score at Week 6
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain). Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Time Frame
Baseline, Week 6
Secondary Outcome Measure Information:
Title
Change From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score at Week 1, 2, 4, 8 and 12
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Time Frame
Baseline, Week 1, 2, 4, 8, 12
Title
Change From Baseline in Average Low Back Pain Intensity (LBPI) Score Over Weeks 1 to 4, 1 to 8, 1 to 12, 5 to 8, and 5 to 12
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Change from baseline was calculated as the average of each specified week interval (Week 1 to 4, 1 to 8, 1 to 12, 5 to 8, 5 to 12) values minus the baseline value.
Time Frame
Baseline, Weeks 1 to 4, 1 to 8, 1 to 12, 5 to 8, 5 to 12
Title
Change From Baseline in Modified Brief Pain Inventory-short Form (mBPI-sf) Scores for Worst Pain and Average Pain at Week 1, 2, 4, 6, 8 and 12
Description
The mBPI-sf was a self-administered questionnaire used to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions (Q) 1-4 assessed the magnitude of pain (Q1 for worst pain, Q2 for least pain, Q3 for average pain, Q4 for pain right now) on an 11-point NRS ranging from 0 (no pain) to 10 (pain as bad as you can imagine), with lower scores indicating less pain. Question 5 consisted of 7 sub-items (A to G; general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life) which measured the level of interference of pain on daily functions. Each sub-item was assessed on an 11-point NRS ranging from 0 (does not interfere) to 10 (completely interferes). Results are reported for worst and average pain score, each ranging from 0 (no pain) to 10 (pain as bad as you can imagine), with lower scores indicating less pain.
Time Frame
Baseline, Week 1, 2, 4, 6, 8, 12
Title
Number of Participants With Average Low Back Pain Intensity (LBPI) Score of 2 or Less
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Participants were classified as responders if average LBPI score was 2 or less, and as non-responders if average LBPI score was greater than (>) 2. Participants with average LBPI score of 2 or less were reported.
Time Frame
Week 1, 2, 4, 6, 8, 12
Title
Number of Participants With Cumulative Percent (%) Reduction From Baseline in Average Low Back Pain Intensity (LBPI) Score at Week 6
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Number of participants with cumulative reduction (as percent) (greater than 0% ; >= 10, 20, 30, 40, 50, 60, 70, 80 and 90%; = 100 %) in Average LBPI score from Baseline at Week 6 were reported, participants (%) are reported more than once in categories specified.
Time Frame
Week 6
Title
Number of Participants With at Least 30% and 50% Sustained Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain) with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Participants with >=30% or >=50% reduction from baseline in daily average LBPI score that was maintained for a minimum duration of 4 consecutive days were reported.
Time Frame
Week 12
Title
Number of Participants With at Least 30% and 50% Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Description
Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week. Number of participants with >=30% and >=50% reduction from Baseline in daily average LBPI score were reported.
Time Frame
Weeks 1, 2, 4, 6, 8, 12
Title
Time to Achieve at Least 30% and 50% Sustained Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Description
Time to achieve >=30% or >=50% sustained reduction from baseline (i.e. reduction from baseline in daily average LBPI score that was maintained for a total of 4 consecutive days) was summarized using the Kaplan-Meier estimates of the median time to 30% and 50% response. Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Time Frame
Randomization to Last Study Visit (up to 16 weeks)
Title
Total Duration of at Least 30% and 50% Reduction From Baseline in Daily Average Low Back Pain Intensity (LBPI) Score
Description
Total duration of response was defined as the total number of days with >=30% or >=50% reduction from baseline in the daily average LBPI score. Daily average low back pain was assessed on an 11-point numeric rating scale (NRS). Participants described their average low back pain during the past 24 hours on a scale ranging from 0 (no pain) to 10 (worst possible pain), with lower scores indicating less pain. Baseline value was calculated as mean of the scores over 5-day prior to randomization (initial pain assessment period). Post-baseline weekly scores were calculated based on the mean of the scores over the 7 days prior to and including the day at the end of the corresponding week.
Time Frame
Week 1 up to Week 12
Title
Change From Baseline in Roland-Morris Disability Questionnaire Total Score at Week 1, 2, 4, 6, 8, and 12
Description
Roland-Morris Disability Questionnaire: low back pain-specific, participant administered questionnaire that assessed how well participants with low back pain were able to function with regard to daily activities. The questionnaire consisted of 24 statements and the participants were instructed to put a mark next to each appropriate statement if it described their pain on the day of assessment. The number of statements marked were added up by the clinician. Total RMDQ score was calculated as the sum of number of statements checked. Total possible score ranged from 0 to 24, with higher scores indicated greater disability.
Time Frame
Baseline, Week 1, 2, 4, 6, 8, 12
Title
Change From Baseline in Modified Brief Pain Inventory-short Form (mBPI-sf) Scores for Pain Interference With Function (Composite Score), General Activity, Walking Ability, Normal Work and Sleep Scores at Week 1, 2, 4, 6, 8 and 12
Description
The mBPI-sf was a self-administered questionnaire used to assess the severity of pain and the impact of pain on daily functions during the 24-hour period prior to evaluation. It consisted of 5 questions. Questions 1 to 4 assessed the magnitude of pain (worst, least, average, right now) on an 11-point NRS ranging from 0 (no pain) to 10 (pain as bad as you can imagine). Question 5 consisted of 7 sub-items (general activity [GA], mood, walking ability [WA], normal work [NW], relations with other people, sleep, enjoyment of life) which measured the level of interference of pain on daily functions. Each sub-item was assessed on an 11-point NRS ranging from 0 (did not interfere) to 10 (completely interfere). The response from 7 sub-items of question 5 were averaged to obtain pain interference composite score (CS), range: 0 to 10 (higher score=more interference).
Time Frame
Baseline, Week 1, 2, 4, 6, 8, 12
Title
Number of Participants With Change From Baseline in Patient's Global Assessment of Low Back Pain (Disease Activity) Score at Week 1, 2, 4, 6, 8 and 12
Description
Patient's global assessment of low back pain scale assessed participants overall impression of disease activity. Participants answered: "Considering all the ways your low back pain affects you, how are you doing today?" Participants responded using a 5-point Likert scale with a score of 1 being the best (very good) and a score of 5 being the worst (very poor). Participants who reported a change of -4, -3, -2, -1, 0, 1, 2, 3, 4 from Baseline in Patient's Global Assessment of Low Back Pain (Disease Activity) score at specified weeks were presented.
Time Frame
Week 1, 2, 4, 6, 8, 12
Title
Number of Participants With Each Response Level of Patient's Global Evaluation of Study Medication
Description
Participants answered: "In all ways, how would you rate your overall response to the study medication today?" Participants responded using a 4-point Likert scale where 1 = poor, 2 = fair, 3 = good and 4 = excellent. Higher score indicated better overall response to the treatment.
Time Frame
Week 1, 2, 4, 6, 8, 12
Title
Number of Participants Who Discontinued the Study Due to Lack of Efficacy
Time Frame
Baseline up to Week 12
Title
Time to Discontinuation Due to Lack of Efficacy
Description
Median time to discontinuation due to lack of efficacy was estimated using Kaplan-Meier method. Median was not estimable if the percentage of participants who discontinued due to lack of efficacy was below 50%.
Time Frame
Baseline up to Week 12
Title
Number of Participants With Chronic Low Back Pain (CLBP) Response
Description
Participants were considered as CLBP responders if they had achieved a reduction of >=30% in daily average LBPI score from baseline, an increase of >=30% in patient's global assessment of low back pain (disease activity) from baseline, and no worsening (increase) in RMDQ total score from baseline at specified week. Daily average low back pain assessed on an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Patient's global assessment of low back pain assessed using a 5-point Likert scale with a score of 1 being the best (very good) and a score of 5 being the worst (very poor). RMDQ: low back pain-specific, participant administered questionnaire consisted of 24 statements and participants were instructed to put a mark next to each appropriate statement if it described their pain on the day of assessment. Total RMDQ score was calculated as sum of number of statements checked. Total possible score ranged from 0 to 24, with higher scores indicated greater disability.
Time Frame
Weeks 1, 2, 4, 6, 8, 12
Title
Number of Participants Who Used Rescue Medications
Description
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. Number of participants with any use of rescue medication during the particular study week were summarized.
Time Frame
Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
Title
Duration of Rescue Medication Use
Description
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. The number of days of rescue medication use during the particular week were summarized.
Time Frame
Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
Title
Amount of Rescue Medication Taken
Description
In case of inadequate pain relief for CLBP or for non-CLBP related pain, acetaminophen up to 2000 mg per day up to 3 days per week could be taken as rescue medication. The total dosage of acetaminophen (in mg) in each particular week was summarized.
Time Frame
Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
Other Pre-specified Outcome Measures:
Title
Number of Participants With Treatment-Emergent Adverse Events (AEs) or Serious Adverse Events (SAEs)
Description
An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the 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 drug and up to 28 days after last dose (up to Week 16) that were absent before treatment or that worsened relative to pretreatment state.
Time Frame
Baseline up to 28 days after last dose of study treatment (up to Week 16)
Title
Number of Participants With Anti-Drug Antibody (ADA)
Description
Human serum anti-drug antibody (ADA) samples were analyzed for the presence or absence of anti-tanezumab antibodies by using the semi-quantitative enzyme-linked immunosorbent assay (ELISA).
Time Frame
Baseline up to Week 12

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
90 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Male or female of any race, >18 years of age and have BMI ≤39 kg/m2 Present with duration of chronic low back pain of ≥3 months requiring regular use of analgesic medication (>4 days per week for the past month) Primary location of low back pain is between the 12th thoracic vertebra and the lower gluteal folds, with or without radiation into the posterior thigh, classified as Category 1 or 2 according to the classification of the Quebec Task Force in Spinal Disorders Must have a score of ≥4 for Low Back Pain Intensity (NRS) while on current treatment at Screening, and completes at least 4 daily pain diaries during the 5 days prior to Randomization, with an average Low Back Pain Intensity (NRS) score of ≥4 Exclusion Criteria: Back pain due to visceral disorder (i.e. endometriosis) or Back pain due to recent major trauma (i.e. vertebral fracture, post-traumatic spondylolisthesis) History of lumbosacral radiculopathy, spinal stenosis associated with neurological impairment, or neurogenic claudication Osteoporotic compression fracture within the last 6 months Known history of: Rheumatoid arthritis; Seronegative spondyloarthropathy (i.e., ankylosing spondylitis, psoriatic arthritis, reactive arthritis, inflammatory bowel disease-related arthropathy); Paget's disease of spine, pelvis or femur; Fibromyalgia; Tumors or infections of the spinal cord Patients receiving acetaminophen only to manage their chronic low back pain Any uncontrolled or untreated chronic disease
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Pfizer CT.gov Call Center
Organizational Affiliation
Pfizer
Official's Role
Study Director
Facility Information:
Facility Name
Pinnacle Research Group LLC
City
Anniston
State/Province
Alabama
ZIP/Postal Code
36207
Country
United States
Facility Name
Radiant Research
City
Birmingham
State/Province
Alabama
ZIP/Postal Code
35209
Country
United States
Facility Name
Radiant Research - Phoenix Southeast
City
Chandler
State/Province
Arizona
ZIP/Postal Code
85225
Country
United States
Facility Name
Radiant Research
City
Scottsdale
State/Province
Arizona
ZIP/Postal Code
85251
Country
United States
Facility Name
Advanced Clinical Research Institute
City
Anaheim
State/Province
California
ZIP/Postal Code
92801
Country
United States
Facility Name
University of California San Diego
City
San Diego
State/Province
California
ZIP/Postal Code
92121
Country
United States
Facility Name
Doctors Medical Center of Walton County
City
DeFuniak Springs
State/Province
Florida
ZIP/Postal Code
32435
Country
United States
Facility Name
SJS Clinical Research, Inc.
City
Destin
State/Province
Florida
ZIP/Postal Code
32541
Country
United States
Facility Name
Adult Medicine Specialists
City
Longwood
State/Province
Florida
ZIP/Postal Code
32779
Country
United States
Facility Name
Genesis Research International
City
Longwood
State/Province
Florida
ZIP/Postal Code
32779
Country
United States
Facility Name
Collier Neurologic Specialists
City
Naples
State/Province
Florida
ZIP/Postal Code
34102
Country
United States
Facility Name
Cotton-O'Neil Clinical Research
City
Topeka
State/Province
Kansas
ZIP/Postal Code
66606
Country
United States
Facility Name
Cotton-O'Neil Clinic
City
Topeka
State/Province
Kansas
ZIP/Postal Code
66606
Country
United States
Facility Name
Heartland Research Associates
City
Wichita
State/Province
Kansas
ZIP/Postal Code
67207
Country
United States
Facility Name
Northeast Medical Research Associates, Inc
City
North Dartmouth
State/Province
Massachusetts
ZIP/Postal Code
02747
Country
United States
Facility Name
Clinical Pharmacology Study Group
City
Worcester
State/Province
Massachusetts
ZIP/Postal Code
01610
Country
United States
Facility Name
Spence Medical Research
City
Picayune
State/Province
Mississippi
ZIP/Postal Code
39466
Country
United States
Facility Name
Radiant Research, Inc.
City
Saint Louis
State/Province
Missouri
ZIP/Postal Code
63141
Country
United States
Facility Name
Quality Clinical Research, Inc.
City
Omaha
State/Province
Nebraska
ZIP/Postal Code
68114
Country
United States
Facility Name
The Medical Research Network, LLC
City
New York
State/Province
New York
ZIP/Postal Code
10024
Country
United States
Facility Name
North State Clinical Research, PLLC
City
Lenoir
State/Province
North Carolina
ZIP/Postal Code
28645
Country
United States
Facility Name
Wake Internal Medicine Consultants, Inc.
City
Raleigh
State/Province
North Carolina
ZIP/Postal Code
27612
Country
United States
Facility Name
Wake Research Associates
City
Raleigh
State/Province
North Carolina
ZIP/Postal Code
27612
Country
United States
Facility Name
Summit Research Network (Oregon), Inc.
City
Portland
State/Province
Oregon
ZIP/Postal Code
97210
Country
United States
Facility Name
Allegheny Pain Management
City
Altoona
State/Province
Pennsylvania
ZIP/Postal Code
16602
Country
United States
Facility Name
New England Center for Clinical Research
City
Cranston
State/Province
Rhode Island
ZIP/Postal Code
02920
Country
United States
Facility Name
Partners in Clinical Research
City
Cumberland
State/Province
Rhode Island
ZIP/Postal Code
02864
Country
United States
Facility Name
Omega Medical Research
City
Warwick
State/Province
Rhode Island
ZIP/Postal Code
02886
Country
United States
Facility Name
Radiant Research
City
Greer
State/Province
South Carolina
ZIP/Postal Code
29651
Country
United States
Facility Name
Advanced Therapeutics, Inc.
City
Johnson City
State/Province
Tennessee
ZIP/Postal Code
37601
Country
United States
Facility Name
Johnson City Internal Medicine
City
Johnson City
State/Province
Tennessee
ZIP/Postal Code
37601
Country
United States
Facility Name
DiscoveResearch, Incorporated
City
Bryan
State/Province
Texas
ZIP/Postal Code
77802
Country
United States
Facility Name
Advances In Health, Inc.
City
Houston
State/Province
Texas
ZIP/Postal Code
77030
Country
United States
Facility Name
Centex Research
City
Nassau Bay
State/Province
Texas
ZIP/Postal Code
77058
Country
United States
Facility Name
Immediate Medical Care
City
Nassau Bay
State/Province
Texas
ZIP/Postal Code
77058
Country
United States
Facility Name
Radiant Research San Antonio
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78229
Country
United States
Facility Name
Independence Family Medicine
City
Virginia Beach
State/Province
Virginia
ZIP/Postal Code
23455
Country
United States
Facility Name
Summit Research Network (Seattle) LLC
City
Seattle
State/Province
Washington
ZIP/Postal Code
98104
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.
IPD Sharing URL
https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests
Links:
URL
https://trialinfoemail.pfizer.com/pages/landing.aspx?StudyID=A4091004&StudyName=RN624%20In%20Adult%20Patients%20With%20Chronic%20Low%20Back%20Pain
Description
To obtain contact information for a study center near you, click here.

Learn more about this trial

RN624 In Adult Patients With Chronic Low Back Pain

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