We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu
Trial record 1 of 1 for:    NCT01571362
Previous Study | Return to List | Next Study

A Research Study of an Investigational Drug ALO-02 (Oxycodone Hydrochloride and Naltrexone Hydrochloride) in Patients With Moderate to Severe Chronic Low Back Pain

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01571362
First Posted: April 5, 2012
Last Update Posted: April 4, 2017
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 (Responsible Party):
Pfizer
  Purpose
The primary objective of the study is to determine the analgesic efficacy and safety of ALO-02 extended-release capsules, when compared to placebo, in subjects with moderate to severe chronic low back pain.

Condition Intervention Phase
Chronic Pain Low Back Pain Analgesia Drug: ALO-02 Drug: Placebo Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Multicenter, 12 Week, Double-blind, Placebo-controlled, Randomized Withdrawal Study To Determine The Efficacy And Safety Of Alo-02 (Oxycodone Hydrochloride And Naltrexone Hydrochloride) Extended-release Capsules In Subjects With Moderate To Severe Chronic Low Back Pain

Resource links provided by NLM:


Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Change in Weekly Average Electronic Diary (eDiary) Numeric Rating Scale -Pain (NRS-Pain) Score From Randomization Baseline to Final 2 Weeks (Average of Weeks 11 and 12) [ Time Frame: Weeks 11 and 12 ]
    Weekly average diary NRS-Pain scores were derived from the daily NRS-pain scale and calculated as the mean of the last 7 days. NRS-Pain scores based on an 11-point numerical rating scale from 0 (no pain) to 10 (worst possible pain). Higher scores indicate greater pain.


Secondary Outcome Measures:
  • Change in Roland-Morris Disability Questionnaire (RMDQ) Total Score From Randomization Baseline to the End of Double-Blind Week 12 (or Final Visit). [ Time Frame: Week 12 ]
    The RMDQ is a 24-item questionnaire designed to measure self-rated disability due to back pain. An individual participant's score can vary from 0 (no disability) to 24 (severe disability), with a lower score indicating better function; higher score indicating greater disability.

  • Percentage (%) of Participants With Shift in Patient Global Assessment (PGA) by Category With Baseline PGA Score of Very Good (1), Good (2), Fair (3), Poor (4), Very Poor (5) From Randomization Baseline to End of Double-Blind Week 12 (or Final Visit). [ Time Frame: Randomization Baseline, Week 12 ]
    Measure represents the score at Randomization Baseline / score at Week 12 (or Early Termination) in PGA, a global evaluation that utilizes 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).

  • Percentage of Participants With Improvement in Weekly Average eDiary NRS-Pain Scores From Screening to Final 2 Weeks of the Double-Blind Treatment Period (Average of Weeks 11 and 12) by Cumulative Percent Reduction of Greater or Equal to (≥) 20% [ Time Frame: Weeks 11 and 12 ]
    Weekly average Diary NRS-pain scores are derived from the daily pain NRS and calculated as the mean of the last 7 days. Scores range from 0 equals (=) no pain to 10 = worst possible pain. Higher scores indicate greater pain.

  • Percentage of Participants With Improvement in Weekly Average eDiary NRS-Pain Scores From Screening to Final 2 Weeks of the Double-Blind Treatment Period (Average of Weeks 11 and 12) by Cumulative Percent Reduction ≥30% [ Time Frame: Weeks 11 and 12 ]
    Weekly average Diary NRS-pain scores are derived from the daily pain NRS and calculated as the mean of the last 7 days. Scores range from 0 = no pain to 10 = worst possible pain. Higher scores indicate greater pain.

  • Percentage of Participants With Improvement in Weekly Average eDiary NRS-Pain Scores From Screening to Final 2 Weeks of the Double-Blind Treatment Period (Average of Weeks 11 and 12) by Cumulative Percent Reduction ≥40% [ Time Frame: Weeks 11 and 12 ]
    Weekly average Diary NRS-pain scores are derived from the daily pain NRS and calculated as the mean of the last 7 days. Scores range from 0 = no pain to 10 = worst possible pain. Higher scores indicate greater pain.

  • Percentage of Participants With Improvement in Weekly Average eDiary NRS-Pain Scores From Screening to Final 2 Weeks of the Double-Blind Treatment Period (Average of Weeks 11 and 12) by Cumulative Percent Reduction ≥50% [ Time Frame: Weeks 11 and 12 ]
    Weekly average Diary NRS-pain scores are derived from the daily pain NRS and calculated as the mean of the last 7 days. Scores range from 0 = no pain to 10 = worst possible pain. Higher scores indicate greater pain.

  • Change From Screening Period to End of Open-Label Treatment in Brief Pain Inventory - Short Form (BPI-sf): Worst Pain, Least Pain, Average Pain, Pain Right Now, Pain Severity Index, Pain Interference Index [ Time Frame: Screening, Week 4, 5, or 6 ]
    BPI-sf is an 11-item self-report questionnaire that is designed to assess the severity and impact of pain on daily functions. BPI-sf includes 4 questions that assess pain intensity (worst, least, average, right now) and 7 questions that assess impact of pain on daily functions (general activity, mood, walking ability, normal work, relations with other people, sleep, enjoyment of life). BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain. Pain Severity Index is the mean of the 4 pain scores (worst, least, average, and right now) on the BPI-sf; range is 0=No pain to 10=Pain as bad as you can imagine; A higher score indicates greater pain severity. Pain Interference Index is the mean of the scores for the 7 items of the BPI-sf; range is 0=Does not interfere to 10=Completely interferes.

  • Change From Screening Period to Randomization Baseline in BPI-sf: Worst Pain, Least Pain, Average Pain, Pain Right Now, Pain Severity Index, Pain Interference Index [ Time Frame: Screening, Randomization Baseline ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain. Pain Severity Index is the mean of the 4 pain scores (worst, least, average, and right now) on the BPI-sf; range is 0=No pain to 10=Pain as bad as you can imagine; A higher score indicates greater pain severity. Pain Interference Index is the mean of the scores for the 7 items of the BPI-sf; range is 0=Does not interfere to 10=Completely interferes.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Worst Pain [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Least Pain [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Average Pain [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Right Now [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Severity Index [ Time Frame: Weeks 2, 4, 8, and 12 ]
    Pain Severity Index is the mean of the 4 pain scores (worst, least, average, and right now) on the BPI-sf; range is 0=No pain to 10=Pain as bad as you can imagine; a higher score indicates greater pain severity.

  • Change From Randomization Baseline to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Interference Index [ Time Frame: Weeks 2, 4, 8, and 12 ]
    Pain Interference Index is the mean of the scores for the 7 items of the BPI-sf; range is 0=Does not interfere to 10=Completely interferes.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Worst Pain [ Time Frame: Weeks 2, 4, 8 and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Least Pain [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; Higher scores indicate greater pain.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Average Pain [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; higher scores indicate greater pain.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Right Now [ Time Frame: Weeks 2, 4, 8, and 12 ]
    BPI-sf scores range from 0=No pain to 10=Pain as bad as you can imagine; higher scores indicate greater pain.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Severity Index [ Time Frame: Weeks 2, 4, 8, and 12 ]
    Pain Severity Index is the mean of the 4 pain scores (worst, least, average, and right now) on the BPI-sf; range is 0=No pain to 10=Pain as bad as you can imagine; a higher score indicates greater pain severity.

  • Change From Screening to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in BPI-sf Scores of Pain Interference Index [ Time Frame: Weeks 2, 4, 8, and 12 ]
    Pain Interference Index is the mean of the scores for the 7 items of the BPI-sf; range is 0=Does not interfere to 10=Completely interferes.

  • Area Under the Curve (AUC) of eDiary NRS-Pain Scores From Randomization Baseline to Final 2 Weeks of the Double-Blind Treatment Period (Weeks 11 and 12) [ Time Frame: Randomization Baseline, Weeks 11 and 12 ]
    NRS-Pain scores based on an 11-point numerical rating scale from 0 (no pain) to 10 (worst possible pain). AUC was calculated using daily change from Baseline scores from Baseline until the last dose date in the Double-Blind Treatment Period. AUC was calculated for each participant using the linear trapezoidal method. Higher scores indicate greater pain.

  • Average Daily Use of Rescue Acetaminophen (Milligrams Per Day [mg/Day]) During the Double-Blind Treatment Period [ Time Frame: Daily from Day 1 of the Double-Blind Period through Week 12 ]
    The amount of acetaminophen administered for each treatment during the Double-Blind Treatment Period. Average daily use calculated as: total dose of rescue medication during Double-Blind Period divided by the number of days in Double-Blind Period.

  • Percentage of Participants With a 20%, 30%, 40%, or 50% Analgesic Response From Screening Period to End of Open-Label Treatment [ Time Frame: Screening, Week 4, 5 or 6 ]
    The percentage of analgesic response is defined as: (rolling 7-day mean pain score during Titration Period - Screening Period pain intensity score) divided by Screening Period pain intensity score times100.

  • Median Time to 20%, 30%, 40%, or 50% Analgesic Response From Screening Period to End of Open-Label Treatment [ Time Frame: Screening, Week 4, 5, or 6 ]
    The percentage of analgesic response is defined as: (rolling 7-day mean pain score during Titration Period minus (-) Screening Period pain intensity score) divided by Screening Period pain intensity score times 100. An event was defined as a participant with 20, 30, 40, or 50% analgesic response from Screening. If there was no event for a participant, time to the event was considered censored at Day 42 of the Titration Period or before Day 42 of the Titration Period at the time of the last diary pain score. The survival duration begins on the date of first dose of study drug in the Titration Period and is calculated as the [date of event or last diary pain score - date of first dose in Titration Period +1].

  • Percentage of Participants With a 20%, 30%, 40%, or 50% Analgesic Response From Screening Period to Randomization Baseline [ Time Frame: Screening, Randomization Baseline (up to 6 weeks) ]
    The percentage of analgesic response is defined as: (rolling 7-day mean pain score during Titration Period - Screening Period pain intensity score) divided by Screening Period pain intensity score times 100.

  • Median Time to 20%, 30%, 40%, or 50% Analgesic Response From Screening Period to Randomization Baseline [ Time Frame: Screening, Randomization Baseline (up to 6 weeks) ]
    The percentage of analgesic response is defined as: (rolling 7-day mean pain score during Titration Period - Screening Period pain intensity score) divided by Screening Period pain intensity score times 100. If there was no event for a participant, time to the event was considered censored at Day 42 of the Titration Period or before Day 42 of the Titration Period at the time of the last diary pain score. The survival duration begins on the date of first dose of study drug in the Titration Period and is calculated as the [date of event or last diary pain score - date of first dose in Titration Period +1].

  • Percentage of Participants With a 20%, 30%, 40%, or 50% Loss of Analgesic Response From Randomization Baseline During the Double-Blind Treatment Period [ Time Frame: Randomization Baseline, up to Week 12 ]
    The percentage of lost analgesic response is defined as: (rolling 7-day mean pain score during Double-Blind Period - Randomization Baseline pain intensity score) divided by Randomization Baseline pain intensity score times 100. If there was no event for a participant, time to the event was considered censored at Day 84 or before Day 84 at the time of the last diary pain score. The survival duration began on the date of first dose of study drug in the Double-Blind Period and was calculated as the [date of event or last diary pain score - date of first dose in Double-Blind Treatment +1].

  • Median Time to 20%, 30%, 40%, or 50% Loss of Analgesic Response From Baseline During the Double-Blind Treatment Period [ Time Frame: Randomization Baseline, up to Week 12 ]
    The percentage of lost analgesic response was defined as: (rolling seven day mean pain score during Double-Blind Period - Randomization Baseline pain intensity score) divided by Randomization Baseline pain intensity score times 100. If there was no event for a participant, time to the event was considered censored at Day 84 or before Day 84 at the time of the last diary pain score. The survival duration began on the date of first dose of study drug in the Double-Blind Period and was calculated as the [date of event or last diary pain score - date of first dose in Double-Blind Treatment +1].

  • Percentage of Participants Discontinuing Treatment for Investigator-Reported Lack of Efficacy [ Time Frame: Week 1 up to Week 12 ]
    If there was no event for a participant, time to the event was considered censored at Day 84 or before Day 84 at time of treatment discontinuation for another reason.

  • Median Time to Treatment Discontinuation for Investigator-Reported Lack of Efficacy During the Double-Blind Treatment Period [ Time Frame: Week 1 up to Week 12 ]
    If there was no event for a participant, time to the event was considered censored at Day 84 or before Day 84 at time of treatment discontinuation for another reason. The survival duration begins on the date of first dose in the Double-Blind period and is calculated as the [date of event or discontinuation - date of first dose in Double-Blind Period +1].

  • Clinical Opiate Withdrawal Scale (COWS) Total Score During the Open-Label Titration Period [ Time Frame: Screening, Weeks 1, 2, 3, 4, 5, and 6 ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. Higher scores indicate a worse outcome. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal.

  • COWS Total Score During the Double-Blind Treatment Period [ Time Frame: Randomization Baseline, Weeks 1, 2, 4, 8, and 12 ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. Higher scores indicate a worse outcome. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal.

  • COWS Total Score During the Post-Treatment Period [ Time Frame: Follow-Up (FU) Weeks 1 and 2 ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. Higher scores indicate a worse outcome. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal.

  • Percentage of Participants With Opiate Withdrawal During the Open-Label Titration Period by COWS Category [ Time Frame: Screening, Weeks 1, 2, 3, 4, 5, 6 (or Early Termination) ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal. The scores are assessed as follows: 5-12 = mild; 13-24 = moderate; 25-36 = moderately severe; more than 36 = severe withdrawal.

  • Percentage of Participants With Opiate Withdrawal During the Double-Blind Treatment Period by COWS Category [ Time Frame: Randomization Baseline, Weeks 1, 2, 4, 8, 12 (or Early Termination) ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal. The scores are assessed as follows: 5-12 = mild; 13-24 = moderate; 25-36 = moderately severe; more than 36 = severe withdrawal.

  • Percentage of Participants With Opiate Withdrawal During Post-Treatment by COWS Category [ Time Frame: Follow-Up Weeks 1 and 2 ]
    The COWS contains 11 common opiate withdrawal signs or symptoms rated by the investigator or designee who, for each item, checked the number that best described the participant's signs or symptoms. The minimum total COWS score is 0, the maximum is 48. The summed score of the 11 items was used to assess a participant's level of opiate withdrawal. The scores are assessed as follows: 5-12 = mild; 13-24 = moderate; 25-36 = moderately severe; more than 36 = severe withdrawal.

  • Subjective Opiate Withdrawal Scale (SOWS) During the Open-Label Titration Period [ Time Frame: Screening, Weeks 1, 2, 3, 4, 5, and 6 ]
    The SOWS was completed daily by the participant during any of the 2-week tapers from study drug, as well as at each study visit, using an eDiary device, and contains 16 symptoms of opiate withdrawal rated by the participant (Scale of 0 to 4: 0 = not at all, 1 = a little, 2= moderately, 3= quite a bit, 4 = extremely). The sum of the scores on each item was the total SOWS score; the minimum possible SOWS score was 0, the maximum 64. Higher scores indicate a worse outcome.

  • SOWS Total Score During the Double-Blind Treatment Period [ Time Frame: Randomization Baseline, Weeks 1, 2, 4, 8, and 12 ]
    The SOWS was completed daily by the participant during any of the 2-week tapers from study drug, as well as at each study visit, using an eDiary device, and contains 16 symptoms of opiate withdrawal rated by the participant (Scale of 0 to 4: 0 = not at all, 1 = a little, 2= moderately, 3= quite a bit, 4 = extremely). The sum of the scores on each item was the total SOWS score; the minimum possible SOWS score was 0, the maximum 64. Higher scores indicate a worse outcome.

  • SOWS Total Score During the Post-Treatment Period [ Time Frame: Follow-Up Weeks 1 and 2 ]
    The SOWS was completed daily by the participant during any of the 2-week tapers from study drug, as well as at each study visit, using an eDiary device, and contains 16 symptoms of opiate withdrawal rated by the participant (Scale of 0 to 4: 0 = not at all, 1 = a little, 2= moderately, 3= quite a bit, 4 = extremely). The sum of the scores on each item was the total SOWS score; the minimum possible SOWS score was 0, the maximum 64. Higher scores indicate a worse outcome.

  • Change From Screening Period to End of Open-Label Titration Period in Roland-Morris Disability Questionnaire (RMDQ) Total Score for All Participants [ Time Frame: Screening, Week 6 (or Early Termination) ]
    RMDQ is a 24-item questionnaire designed to measure self-rated disability due to back pain the same day the questionnaire is completed. An individual participant's score could have ranged from 0 (no disability) to 24 (severe disability), with a lower score indicating better function; higher scores indicating greater disability.

  • Change From Screening Period to Randomization Baseline in RMDQ Total Score [ Time Frame: Screening, Randomization Baseline ]
    RMDQ is a 24-item questionnaire designed to measure self-rated disability due to back pain the same day the questionnaire is completed. An individual participant's score could have ranged from 0 (no disability) to 24 (severe disability), with a lower score indicating better function.

  • Change From Screening Period to End of Double-Blind Weeks 2, 4, 8, and 12 (or Final Visit) in RMDQ Total Score [ Time Frame: Screening, Weeks 2, 4, 8, and 12 ]
    RMDQ is a 24-item questionnaire designed to measure self-rated disability due to back pain the same day the questionnaire is completed. An individual participant's score could have ranged from 0 (no disability) to 24 (severe disability), with a lower score indicating better function.

  • Change From Randomization Baseline to the End of Double-Blind Weeks 2, 4, and 8 in RMDQ Total Score [ Time Frame: Randomization Baseline, Weeks 2, 4, and 8 ]
    RMDQ is a 24-item questionnaire designed to measure self-rated disability due to back pain the same day the questionnaire is completed. An individual participant's score could have ranged from 0 (no disability) to 24 (severe disability), with a lower score indicating better function.

  • Percentage of Participants With Shift From Screening to Randomization Baseline in PGA of Low Back Pain by Category in Participants With Screening PGA Score of Very Good, Good, Fair, Poor, Very Poor [ Time Frame: Screening, Randomization Baseline ]
    Represents the score at Screening / score at Randomization Baseline in PGA of low back pain, a global evaluation that utilizes a 5-point Likert scale with a score of: 1 = very good, asymptomatic and no limitation of normal activities; 2 = good, mild symptoms, and no limitation of normal activities; 3 = fair, moderate symptoms and limitation to some normal activities; 4 = poor, severe symptoms and inability to carry out most normal activities; and a score of 5 = very poor; very severe symptoms, which were intolerable and inability to carry out all normal activities.

  • Percentage of Participants With Shift From Screening to the End of the Open-Label Titration Period in PGA of Low Back Pain by Category in Participants With Screening PGA Score of Very Good, Good, Fair, Poor, Very Poor [ Time Frame: Screening, Randomization Baseline, or Early Termination ]
    Represents the score at Screening / score at to end of the titration period in PGA of low back pain, a global evaluation that utilizes a 5-point Likert scale with a score of: 1 = very good, asymptomatic and no limitation of normal activities; 2 = good, mild symptoms, and no limitation of normal activities; 3 = fair, moderate symptoms and limitation to some normal activities; 4 = poor, severe symptoms and inability to carry out most normal activities; and a score of 5 = very poor; very severe symptoms, which were intolerable and inability to carry out all normal activities.

  • Percentage of Participants With Shift From Randomization Baseline to End of Double-Blind Week 4 in PGA of Low Back Pain by Category in Participants With Randomization Baseline PGA Score of Very Good, Good, Fair, Poor, Very Poor [ Time Frame: Randomization Baseline, Week 4 ]
    Represents the score at Randomization Baseline / score at Week 4 in PGA of low back pain, a global evaluation that utilizes a 5-point Likert scale with a score of: 1 = very good, asymptomatic and no limitation of normal activities; 2 = good, mild symptoms, and no limitation of normal activities; 3 = fair, moderate symptoms and limitation to some normal activities; 4 = poor, severe symptoms and inability to carry out most normal activities; and a score of 5 = very poor; very severe symptoms, which were intolerable and inability to carry out all normal activities.

  • Percentage of Participants With Shift From Randomization Baseline to End of Double-Blind Week 8 in PGA of Low Back Pain by Category in Participants With Randomization Baseline PGA Score of Very Good , Good, Fair, Poor, Very Poor [ Time Frame: Randomization Baseline, Week 8 ]
    Represents the score at Randomization Baseline / score at Week 8 in PGA of low back pain, a global evaluation that utilizes a 5-point Likert scale with a score of: 1 = very good, asymptomatic and no limitation of normal activities; 2 = good, mild symptoms, and no limitation of normal activities; 3 = fair, moderate symptoms and limitation to some normal activities; 4 = poor, severe symptoms and inability to carry out most normal activities; and a score of 5 = very poor; very severe symptoms, which were intolerable and inability to carry out all normal activities.

  • Satisfaction With Treatment at the End of Open-Label Titration Period for All Participants [ Time Frame: End of Open-Label Titration Period (Week 4, 5, or 6 or Early Termination) ]
    Satisfaction with treatment is a single-item self-rated instrument that measures the participant's overall satisfaction with the study drug during study participation on a 5-point likert scale ranging from 1 = Very dissatisfied to 5 = Very satisfied.

  • Satisfaction With Treatment at Randomization Baseline [ Time Frame: Randomization Baseline ]
    Satisfaction with treatment is a single-item self-rated instrument that measures the participant's overall satisfaction with the study drug during study participation on a 5-point likert scale ranging from 1 = Very dissatisfied to 5 = Very satisfied.

  • Percentage of Participants Who Reported Being Satisfied/Very Satisfied With Treatment on the Satisfaction With Treatment Questionnaire During the Double-Blind Treatment Period [ Time Frame: Week 12 or Early Termination ]
    Participants used an electronic tablet at the center to rate their overall treatment satisfaction with study drug during study participation using a 5-point categorical scale (1 = very dissatisfied, 2 = dissatisfied, 3 = neither satisfied nor dissatisfied, 4 = satisfied, 5 = very satisfied).

  • Change From Screening Period to the End of Open-Label Titration Period in Short Form-36v2 (SF-36v2) Health Survey Score [ Time Frame: Screening, Week 6 (or Early Termination) ]
    SF-36v2 Health Survey is a self-administered questionnaire consisting of 36 questions, measuring 8 health aspects; physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. These domains also combine to form two component summary scores evaluating mental health and physical health. The minimum score is 0 and the maximum score is 100. A higher scores indicates a better health state.

  • Change From Screening Period to Randomization Baseline in SF-36v2 Health Survey Score [ Time Frame: Screening, Randomization Baseline ]
    SF-36v2 Health Survey is a self-administered questionnaire consisting of 36 questions, measuring 8 health aspects; physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. These domains also combine to form two component summary scores evaluating mental health and physical health. The minimum score is 0 and the maximum score is 100. A higher score indicate a better health state.

  • Change From Randomization Baseline to the End of Double-Blind Week 12 (or Final Visit) in SF-36v2 Health Survey [ Time Frame: Randomization Baseline, Week 12 ]
    SF-36v2 Health Survey is a self-administered questionnaire consisting of 36 questions, measuring 8 health aspects; physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. These domains also combine to form two component summary scores evaluating mental health and physical health. The minimum score is 0 and the maximum score is 100. A higher score indicate a better health state.

  • Change From Screening Period to End of Double-Blind Week 12 (or Final Visit) in SF-36v2 Health Survey [ Time Frame: Screening, Week 12 ]
    SF-36v2 Health Survey is a self-administered questionnaire consisting of 36 questions, measuring 8 health aspects; physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. These domains also combine to form two component summary scores evaluating mental health and physical health. The minimum score is 0 and the maximum score is 100. A higher score indicate a better health state.

  • Change From Screening Period to the End of Open-Label Titration Period in Participant Assessment of Overall Health State Using the EuroQol 5-Dimensions (EQ-5D) Summary Index [ Time Frame: Screening, Week 6 (or Early Termination) ]
    The EQ 5D Health Questionnaire is a self completion standardized instrument for use as a measure of health-related quality of life in terms of a single index value or utility score that consisted of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which was rated on a 3-point response scale (no problems/some or moderate problems/extreme problems), and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health.

  • Change From Screening Period to the End of Open-Label Titration Period in Participant Assessment of Overall Health State Using the EQ-5D VAS [ Time Frame: Screening, Week 6 (or Early Termination) ]
    The EQ-5D consists of a standard vertical 20cm visual analogue scale (EQ VAS), for recording a participant's rating for their current health related quality of life state; the scale went from 0 (worst imaginable health state) to 100 (best imaginable health state). Participants were asked to draw a line on the scale to indicate how good or bad your own health is today, in your opinion.

  • Change From Screening Period to Randomization Baseline in Participant Assessment of Overall Health State Using the EQ-5D Summary Index [ Time Frame: Screening, Randomization Baseline ]
    Self-completion standardized instrument for use as a measure of health-related quality of life in terms of a single index value or utility score that consisted of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which was rated on a 3-point response scale (no problems/some or moderate problems/extreme problems), and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health

  • Change From Screening Period to Randomization Baseline in Participant Assessment of Overall Health State Using the EQ-5D VAS [ Time Frame: Screening, Randomization Baseline ]
    The EQ-5D consists of a standard vertical 20cm visual analogue scale (EQ VAS), for recording a participant's rating for their current health related quality of life state; the scale went from 0 (worst imaginable health state) to 100 (best imaginable health state). Participants were asked to draw a line on the scale to indicate how good or bad your own health is today, in your opinion.

  • Change From Randomization Baseline to End of Double-Blind Week 12 (or Final Visit) in Participant Assessment of Overall Health State Using EQ-5D Summary Index [ Time Frame: Randomization Baseline, Week 12 ]
    Self-completion standardized instrument for use as a measure of health-related quality of life in terms of a single index value or utility score that consisted of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which was rated on a 3-point response scale (no problems/some or moderate problems/extreme problems), and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health

  • Change From Randomization Baseline to End of Double-Blind Week 12 (or Final Visit) in Participant Assessment of Overall Health State Using the EQ-5D VAS [ Time Frame: Randomization Baseline, Week 12 ]
    The EQ-5D consists of a standard vertical 20cm visual analogue scale (EQ VAS), for recording a participant's rating for their current health related quality of life state; the scale went from 0 (worst imaginable health state) to 100 (best imaginable health state). Participants were asked to draw a line on the scale to indicate how good or bad your own health is today, in your opinion.

  • Change From Screening Period to End of Double-Blind Week 12 (or Final Visit) in Participant Assessment of Overall Health State Using EQ-5D Summary Index [ Time Frame: Screening, Week 12 ]
    Self-completion standardized instrument for use as a measure of health-related quality of life in terms of a single index value or utility score that consisted of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which was rated on a 3-point response scale (no problems/some or moderate problems/extreme problems), and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health.

  • Change From Screening Period to End of Double-Blind Week 12 (or Final Visit) in Participant Assessment of Overall Health State Using EQ-5D VAS [ Time Frame: Screening, Week 12 ]
    The EQ-5D consists of a standard vertical 20cm visual analogue scale (EQ VAS), for recording a participant's rating for their current health related quality of life state; the scale went from 0 (worst imaginable health state) to 100 (best imaginable health state). Participants were asked to draw a line on the scale to indicate how good or bad your own health is today, in your opinion.

  • Change From Screening Period to End of Open-Label in Work Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI:SHP): % Work Time Missed, % Impairment, % Overall Work Impairment, % Activity Impairment Due to Low Back Pain [ Time Frame: Screening, Week 6 (or Early Termination) ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment /absenteeism+presenteeism); and activity impairment.

    • work time missed - a measure of absenteeism, calculated as work time missed due to health problem (question 2) as a proportion of hours actually worked (question 4).
    • impairment while working - a measure of presenteeism, the degree to which health problem impacted work (question 5).
    • overall work impairment - a measure of overall work productivity loss due to health problem (absenteeism+presenteeism).
    • activity impairment - a measure of the degree to which health problem has affected ability to do regular activities other than work at a job (question 6). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.

  • Change From Screening Period to Randomization Baseline in WPAI:SHP: Percent Work Time Missed, Percent Impairment, Percent Overall Work Impairment, Percent Activity Impairment Due to Low Back Pain [ Time Frame: Screening, Randomization Baseline ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    • work time missed - a measure of absenteeism, calculated as work time missed due to health problem (question 2) as a proportion of hours actually worked (question 4).
    • impairment while working - a measure of presenteeism, the degree to which health problem impacted work (question 5).
    • overall work impairment - a measure of overall work productivity loss due to health problem (absenteeism+presenteeism).
    • activity impairment - a measure of the degree to which health problem has affected ability to do regular activities other than work at a job (question 6).

    Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Work Time Missed Due to Low Back Pain [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % work time missed - a measure of absenteeism, calculated as work time missed due to health problem (question 2) as a proportion of hours actually worked (question 4).

    Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Impairment Due to Low Back Pain [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % impairment while working - a measure of presenteeism, the degree to which health problem impacted work (question 5).

    Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Overall Work Impairment Due to Low Back Pain [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % overall work impairment - a measure of overall work productivity loss due to health problem (absenteeism+presenteeism).

    Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Activity Impairment Due to Low Back Pain [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % activity impairment - a measure of the degree to which health problem has affected ability to do regular activities other than work at a job (question 6). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Screening Period to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Work Time Missed Due to Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % work time missed - a measure of absenteeism, calculated as work time missed due to health problem (question 2) as a proportion of hours actually worked (question 4). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Screening Period to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Impairment Due to Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % impairment while working - a measure of presenteeism, the degree to which health problem impacted work (question 5). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Screening Period to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Overall Work Impairment Due to Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % overall work impairment - a measure of overall work productivity loss due to health problem (absenteeism+presenteeism). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Change From Screening Period to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in WPAI:SHP Percent Activity Impairment Due to Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]

    A self-reported measure of work productivity and impairment that yields 4 scores: Absenteeism (work time missed); Presenteeism (impairment at work/reduced on the job effectiveness); work productivity loss (overall work impairment/absenteeism+presenteeism); and activity impairment.

    % activity impairment - a measure of the degree to which health problem has affected ability to do regular activities other than work at a job (question 6). Each score is expressed as a percentage (0-100%) with higher numbers indicating greater impairment and less productivity.


  • Percentage of Participants With Shift From Screening Period to End of Open-Label Titration Period in Hospitalization Because of Low Back Pain as Assessed Using the Healthcare Resource Use (HRU) Questionnaire [ Time Frame: Screening, Week 6 (or Early Termination) ]
    Question 3a = In the past 4 weeks, have you been hospitalized due to chronic low back pain or any medication used for chronic low back pain?

  • Percentage of Participants With Shift From Screening Period to Randomization Baseline in Hospitalization Because of Low Back Pain as Assessed Using the HRU Questionnaire [ Time Frame: Screening, Randomization Baseline ]
    Question 3a = In the past 4 weeks, have you been hospitalized due to chronic low back pain or any medication used for chronic low back pain?

  • Change From Screening to Randomization Baseline in HRU Questionnaire: Number of Office Visits Directly Related or Any Medication Used for Chronic Low Back Pain [ Time Frame: Screening, Randomization Baseline ]
    Question 1: number of office visits directly related to chronic low back pain or any medication used for chronic low back pain.

  • Change From Screening to Randomization Baseline in HRU Questionnaire: Money Spent on Physical Treatments in Past 4 Weeks [ Time Frame: Screening, Randomization Baseline ]
    Question 2: Money (dollars) spent out-of-pocket on physical treatments in the past 4 weeks to manage chronic low back pain

  • Change From Screening to Randomization Baseline in HRU Questionnaire: Nights Stayed in Hospital [ Time Frame: Screening, Randomization Baseline ]
    Question 3b: nights stayed in the hospital, if answer to Q3a was yes.

  • Change From Screening to End of Open-Label Titration Period in HRU Questionnaire: Number of Office Visits Directly Related or Any Medication Used for Chronic Low Back Pain [ Time Frame: Screening, Week 6 (or Early Termination) ]
    Question 1: number of office visits directly related to chronic low back pain or any medication used for chronic low back pain.

  • Change From Screening to End of Open-Label Titration Period in HRU Questionnaire: Money Spent on Physical Treatments in Past 4 Weeks [ Time Frame: Screening, Week 6 (or Early Termination) ]
    Question 2: Money (dollars) spent out-of-pocket on physical treatments in the past 4 weeks to manage chronic low back pain

  • Change From Screening to End of Open-Label Titration Period in HRU Questionnaire: Nights Stayed in Hospital [ Time Frame: Screening, Week 6 (or Early Termination) ]
    Question 3b: nights stayed in the hospital, if answer to Q3a was yes.

  • Percentage of Participants With Shift From Randomization Baseline to End of Double-Blind Weeks 4, 8, and 12 (or Final Visit) in Hospitalization Because of Low Back Pain as Assessed Using the HRU Questionnaire [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 (or Early Termination) ]
    Question 3a = In the past 4 weeks, have you been hospitalized due to chronic low back pain or any medication used for chronic low back pain?

  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Number of Office Visits Related to or Medications Used for Chronic Low Back Pain [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]
    Question 1: number of office visits directly related to chronic low back pain or any medication used for chronic low back pain

  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Money Spent on Treatments [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]
    Question 2: money (dollars) spent out-of-pocket on physical treatments in the past 4 weeks to manage chronic low back pain.

  • Change From Randomization Baseline to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Nights Spent in Hospital [ Time Frame: Randomization Baseline, Weeks 4, 8, and 12 ]
    Question 3b: nights stayed in the hospital

  • Percentage of Participants With Shift From Screening Period to the End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in Hospitalization Because of Low Back Pain as Assessed Using the HRU Questionnaire [ Time Frame: Screening, Weeks 4, 8, and 12 ]
    Question 3a = In the past 4 weeks, have you been hospitalized due to chronic low back pain or any medication used for chronic low back pain?

  • Change From Screening Period to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Number of Office Visits Related or Medication Used for Chronic Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]
    Question 1: number of office visits directly related to chronic low back pain or any medication used for chronic low back pain

  • Change From Screening Period to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Money Spent on Treatment for Chronic Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]
    Question 2: money (dollars) spent out-of-pocket on physical treatments in the past 4 weeks to manage chronic low back pain

  • Change From Screening Period to End of Double-Blind Weeks 4, 8 and 12 (or Final Visit) in HRU Questionnaire: Nights in Hospital for Chronic Low Back Pain [ Time Frame: Screening, Weeks 4, 8, and 12 ]
    Question 3b: nights stayed in the hospital

  • Mean Oxycodone Average Daily Dose During the Open-Label Titration Period [ Time Frame: Open-Label Period ]
  • Mean Oxycodone Duration of Titration During the Open-Label Titration Period [ Time Frame: Open-Label Period ]
  • Median Oxycodone Average Daily Dose During the Open-Label Titration Period [ Time Frame: Open-Label Period ]
  • Median Oxycodone Duration of Titration During the Open-Label Titration Period [ Time Frame: Open-Label Period ]
  • Mean Oxycodone Average Daily Dose During the Double-Blind Treatment Period [ Time Frame: Double-Blind Period ]
  • Mean Oxycodone Duration of Treatment During the Double-Blind Treatment Period [ Time Frame: Double-Blind Period ]
  • Median Oxycodone Average Daily Dose During the Double-Blind Treatment Period [ Time Frame: Double-Blind Period ]
  • Median Oxycodone Duration of Treatment During the Double-Blind Treatment Period [ Time Frame: Double-Blind Period ]
  • Oxycodone and Noroxycodone Observed Steady-State Plasma Concentration During the Titration Period [ Time Frame: Blood samples were taken within +/-4 hours of the morning dose of ALO-02 at Week 6/Early Termination, Randomization Baseline ]
    Observed steady-state plasma concentration (Cobs) of oxycodone and noroxycodone.

  • Naltrexone and 6-β-naltrexol Observed Steady-State Plasma Concentration During the Titration Period [ Time Frame: Blood samples were taken within +/-4 hours of the morning dose of ALO-02 at Week 6/Early Termination, Randomization Baseline ]
    Cobs of naltrexone and 6-β-naltrexol

  • Oxycodone and Noroxycodone Observed Steady-State Plasma Concentration During the Double-Blind Treatment Period [ Time Frame: Blood samples were taken within +/-4 hours of the morning dose of study drug at Randomization Baseline, Weeks 4, 8, and 12 ]
    Observed steady-state plasma concentration (Cobs) of oxycodone and noroxycodone

  • Naltrexone and 6-β-naltrexol Observed Steady-State Plasma Concentration During the Double Blind Treatment Period [ Time Frame: Blood samples were taken within +/-4 hours of the morning dose of study drug at Randomization Baseline, Weeks 4, 8, and 12 ]
    Observed steady-state plasma concentration (Cobs) of naltrexone and 6-β-naltrexol


Enrollment: 410
Study Start Date: June 2012
Study Completion Date: June 2013
Primary Completion Date: June 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: ALO-02 Drug: ALO-02
20 to 160mg total daily dose of oxycodone, divided into symmetric doses and administered twice daily
Other Name: oxycodone HCl and naltrexone HCl
Placebo Comparator: Placebo Drug: Placebo
oral placebo, divided into symmetric doses and administered twice daily

  Eligibility

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
Criteria

Inclusion Criteria:

  • Moderate-to-severe chronic low back pain present for at least 3 months.
  • Require a continuous around-the-clock opioid analgesic for an extended period of time.
  • Refrain from taking other opioid and non-opioid medications during the study.

Exclusion Criteria:

  • Active or within a past 2 years a history of lumbosacral radiculopathy or chronic low back pain due to other underlying disorders such as spinal stenosis with neurologic impairment, cancer, infection, or post-surgical intervention.
  • Documented diagnosis of ongoing pain due to other chronic pain conditions which may interfere with assessment of chronic low back pain.
  • Active or ongoing or history of alcohol or drug abuse.
  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): NCT01571362


  Show 52 Study Locations
Sponsors and Collaborators
Pfizer
Investigators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT01571362     History of Changes
Other Study ID Numbers: B4531002
ALO-02-10-3002 ( Other Identifier: Alias Study Number )
First Submitted: April 3, 2012
First Posted: April 5, 2012
Results First Submitted: October 6, 2016
Results First Posted: April 4, 2017
Last Update Posted: April 4, 2017
Last Verified: February 2017

Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Pfizer:
oxycodone
naltrexone
chronic pain
low back pain

Additional relevant MeSH terms:
Back Pain
Low Back Pain
Chronic Pain
Pain
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms
Naltrexone
Oxycodone
Narcotic Antagonists
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Analgesics, Opioid
Narcotics
Central Nervous System Depressants
Analgesics