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CompletedNCT01043263CLBPUpdated Apr 2, 2015

Efficacy and Safety of EN3324 (Axomadol) in Subjects With Chronic Low Back Pain

A Phase 2 interventional study of EN3324 (axomadol) and Placebo in Chronic Low Back Pain, sponsored by Grünenthal GmbH. Completed at 59 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-04-02.

Sponsored by Grünenthal GmbH · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
236
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine the efficacy and safety of EN3324 (axomadol) in subjects with moderate to severe chronic low back pain

Read the detailed description

A phase IIB, randomized, double-blind, two-arm, multi-center, placebo-controlled, study to assess the efficacy and safety of EN3324 (axomadol) in subjects with moderate to severe chronic low back pain

02

Conditions studied

  • Chronic Low Back Pain
03

In context

Back Pain

2,373 studies on the registry are indexed under Back Pain; 284 are open to participants now.

This study's enrollment of 236 is above the median of 60 across 1,941 interventional studies indexed under Back Pain.

Browse Back Pain studies →

Lead sponsor

Grünenthal GmbH is the lead sponsor of 65 studies on the registry; 2 are open to participants now.

Of its 13 completed or terminated interventional studies of FDA-regulated products, 8 (62%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 18 years of age or older
  • Are females who are participating abstinence or using a medically acceptable form of contraception or have been post-menopausal, biologically sterile, or surgically sterile for more than 1 year.
  • Have been on an unchanged regimen of analgesic medication for chronic low back pain on a daily basis for at least 3 months prior to screening; subjects taking opioids must not exceed total daily doses of 90mg oral morphine equivalent
  • Have a history of moderate to severe CLBP

Exclusion criteria

Exclusion Criteria:

  • Have evidence of or a history of alcohol and/or drug abuse
  • Have pain secondary to a confirmed or suspected neoplasm
  • Intend to alter their physical therapy regimen during the study. Subjects who begin or end physical therapy (either home exercises or formal therapy sessions) 2 weeks prior to screening or during the study period will be excluded from the study
  • Have a history or physical examination finding, which may confound pain-related data (e.g., fibromyalgia, radiculopathy)
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
236 participants (actual)

Study arms

  • Experimental
    EN3324 (axomadol)

    Drug: EN3324 (axomadol)

  • Placebo comparator
    Placebo

    Drug: Placebo

Interventions

  • DrugEN3324 (axomadol)

    twice daily dosing

  • DrugPlacebo

    twice daily dosing

06

What researchers measure

Primary outcomes

  1. To evaluate the efficacy of EN3324 (axomadol) in subjects with moderate to severe CLBP.

    Time frame: Change from baseline [Day 0] to final visit [Day 112]

Secondary outcomes

  1. To evaluate the safety, tolerability and efficacy of EN3324 (axomadol) in subjects with moderate to severe CLBP.

    Time frame: Change from baseline [Day 0] to final visit [Day 112]

  2. To evaluate patient reported outcomes of EN3324 (axomadol) in subjects with moderate to severe CLBP.

    Time frame: Change from baseline [Day 0] to final visit [Day 112]

07

Study locations

59 sites
  • Matthew Doust, MD
    Phoenix, Arizona 85050, United States
  • Paradigm Clinical
    Tucson, Arizona 85705, United States
  • Visions Clinical Research
    Tucson, Arizona 85712, United States
  • Genova Clinical Research, Inc.
    Tucson, Arizona 85741, United States
  • Quality of Life Medical & Research Center
    Tuscon, Arizona 85715, United States
  • Advanced Clinical Research Institute
    Anaheim, California 92801, United States
  • Orange County Clinical Trials, Inc.
    Anaheim, California 92801, United States
  • Associated Pharmaceutical Research Center, Inc.
    Buena Park, California 90620, United States
  • Catalina Research Institute, LLC
    Chino, California 91710, United States
  • Paradigm Clinical Research
    Garden Grove, California 92844, United States
  • Synergy Escondido
    La Mesa, California 91942, United States
  • Triwest Research Associates
    La Mesa, California 91942, United States
  • LBCCR
    Long Beach, California 90806, United States
  • Pacific Institute for Med Research
    Los Angeles, California 90024, United States
  • Samaritan Center for Medical Research
    Los Gatos, California 95032, United States
  • Synergy Research Center
    National City, California 91950, United States
  • Northern California Research
    Sacramento, California 95821, United States
  • Mountain View Clinical Research
    Denver, Colorado 80209, United States
  • Avail Clinical Research
    DeLand, Florida 32720, United States
  • Neuropsychiatric Research Center of SW Florida
    Fort Myers, Florida 33912, United States
  • CNS Healthcare
    Jacksonville, Florida 32216, United States
  • Florida Institute of Medical Research
    Jacksonville, Florida 32257, United States
  • Behavioral Clinical Research, Inc.
    Lauderhill, Florida 33319, United States
  • Segal Institute for Clinical Research
    North Miami, Florida 33161, United States
  • CNS Health
    Orlando, Florida 32806, United States
  • Compass Research
    Orlando, Florida 32806, United States
  • Altas Orthopedics & Sports Medicine
    Orlando, Florida 32822, United States
  • Gold Coast Research LLC.
    Plantation, Florida 33324, United States
  • Medex Healthcare Research, Inc.
    Chicago, Illinois 60603, United States
  • Center for Pain Management Rehabilitation Institute of Chicago
    Chicago, Illinois 60611, United States
  • Integrated Clinical Trial Services Inc.
    West Des Moines, Iowa 50265, United States
  • International Clinical Research Institute Inc.
    Overland Park, Kansas 66211, United States
  • Robert Wagner, MD
    Crestview Hills, Kentucky 41017, United States
  • Four Rivers Clinical Research
    Paducah, Kentucky 42003, United States
  • Beacon Clinical Research LLC
    Brockton, Massachusetts 02301, United States
  • Quest Research Institute
    Bingham Farms, Michigan 48025, United States
  • Prime Care Research Associates
    Florissant, Missouri 63031, United States
  • Medex Health Research, Inc.
    St. Louis, Missouri 63117, United States
  • Sundance Clinical Research
    St. Louis, Missouri 63141, United States
  • Office of Danka Micheals, MD
    Las Vegas, Nevada 89128, United States
  • Stephen Miller, MD
    Las Vegas, Nevada 89144, United States
  • Comprehensive Clinical Research
    Berlin, New Jersey 08009, United States
  • Finger Lakes Clinical Research
    Rochester, New York 14618, United States
  • New Hanover Medical Research
    Wilmington, North Carolina 28401, United States
  • The Center for Clinical Research, LLC & Carolinas Pain Institute, P.A.
    Winstom-Salem, North Carolina 27103, United States
  • David Schneider, MD
    Cincinnari, Ohio 45245, United States
  • Community Research
    Cincinnati, Ohio 45227, United States
  • North Star Medical Research, LLC
    Middleburg Heights, Ohio 44130, United States
  • Bone, Joint & Spine Surgeons, Inc.
    Toledo, Ohio 43623, United States
  • Neurology & Neruoscience Center of Ohio
    Toledo, Ohio 43623, United States
  • Alleghany Pain Management, PC
    Altoona, Pennsylvania 16602, United States
  • Paragon Clinical Research Inc.
    Cranston, Rhode Island 02920, United States
  • Omega Clinical Research
    Warwick, Rhode Island 02818, United States
  • Future Search Trials
    Ausitn, Texas 78756, United States
  • Austin Diagnostic Clinic
    Ausitn, Texas 78758, United States
  • KRK Medical Research
    Dallas, Texas 75230, United States
  • Clinical Trial Network
    Houston, Texas 77074, United States
  • Medex Healthcare Research
    Houston, Texas 77074, United States
  • Sun Research Institute
    San Antonio, Texas 78215, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 2, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01043263
Lead sponsor
Grünenthal GmbH
Responsible party
Sponsor
First posted
Jan 6, 2010
Start date
Dec 2009
Primary completion
Jun 2011
Completion
Jun 2011
Last update
Apr 2, 2015

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2015. You cannot join it, but the record below documents what was studied.

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