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A Study With IPX056 in Subjects With Spasticity Associated With Multiple Sclerosis

This study has been completed.
Information provided by (Responsible Party):
IMPAX Laboratories, Inc. Identifier:
First received: June 2, 2009
Last updated: September 8, 2015
Last verified: September 2013
To explore the safety and efficacy of IPX056 compared with baclofen tablets for alleviation of symptoms of spasticity associated with multiple sclerosis (MS).

Condition Intervention Phase
Multiple Sclerosis
Drug: IPX056
Drug: Baclofen
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: A Study With IPX056 in Subjects With Spasticity Associated With Multiple Sclerosis

Resource links provided by NLM:

Further study details as provided by IMPAX Laboratories, Inc.:

Primary Outcome Measures:
  • Morning Stiffness Score [ Time Frame: 6 weeks ] [ Designated as safety issue: No ]
  • Nighttime Awakening Score [ Time Frame: 6 weeks ] [ Designated as safety issue: No ]

Enrollment: 23
Study Start Date: April 2009
Study Completion Date: February 2010
Primary Completion Date: January 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: IPX056 Drug: IPX056
Encapsulated IPX056
Other Names:
  • IPX056 ER Capsule
  • IPX056 ER
Active Comparator: Baclofen Drug: Baclofen
Encapsulated baclofen capsule
Other Names:
  • CAS Registry Number [11134-47-0]
  • C10H12ClNO2


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Genders Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male or female at least 18 years old.
  • Agrees to use a medically acceptable method of contraception throughout the study
  • Diagnosed with MS as defined by Poser or McDonald Criteria.
  • Receiving commercial baclofen tablets at a stable total daily dose ranging from 15 mg to 80 mg in a TID dosing regimen for at least 4 weeks prior to the Screening Visit that has resulted in improved spasticity.
  • Willing to wash out and remain off other antispasticity medications during the study.

Exclusion Criteria:

  • If female, the subject is pregnant, planning to become pregnant, or breastfeeding.
  • History of allergy or severe intolerance to baclofen.
  • Did not respond to previous baclofen treatment in any formulation.
  • Has experienced an exacerbation of MS within 1 month.
  • Urinary tract infection (UTI) within 2 weeks or two symptomatic UTIs within 6 months prior to the study.
  • Subjects with clinically significant impairment of renal function
  • History of active seizure disorder or epilepsy, or currently taking an anticonvulsant for treatment or control of seizure.
  • Other conditions causing spasticity (e.g., stroke, cerebral palsy, traumatic brain injury) or rigidity (e.g. Parkinson's Disease).
  • Treated with Botulinum Toxin Type A or B within the previous 4 months, or with phenol or therapeutic alcohol nerve block within 12 months or planned use of these drugs during this study.
  • Has clinically significant limitation of passive range of motion of lower extremities.
  • Has had major surgery within 6 months prior to Screening Visit that may affect spasticity assessments such as abdominal surgery, back surgery, lower leg and knee surgeries.
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00914290

United States, Arizona
Northwest NeuroSpecialists, PLLC
Tucson, Arizona, United States, 85741
United States, Colorado
University of Colorado
Aurora, Colorado, United States, 80045
United States, Florida
Meridien Research
Tampa, Florida, United States, 33606
United States, Indiana
Fort Wayne Neurological Center
Fort Wayne, Indiana, United States, 46805
United States, Kansas
MidAmerica Neuroscience Institute
Lenexa, Kansas, United States, 66214
United States, Michigan
QUEST Research Institute
Bingham Farms, Michigan, United States, 48025
United States, Montana
Great Falls Cllinic
Great Falls, Montana, United States, 59405
United States, New York
Empire Neurology, PC
Latham, New York, United States, 12110
Winthrop University Hospital
Mineola, New York, United States, 11501
United States, North Carolina
Wake Forest University Health Sciences
Winston-Salem, North Carolina, United States, 27157
United States, Texas
Central Texas Neurology Consultants
Round Rock, Texas, United States, 78681
Sponsors and Collaborators
IMPAX Laboratories, Inc.
Study Director: Impax Study Director Impax Laboratories (Impax Pharmaceuticals, a division of Impax Laboratories)
  More Information

Responsible Party: IMPAX Laboratories, Inc. Identifier: NCT00914290     History of Changes
Other Study ID Numbers: IPX056-B09-01 
Study First Received: June 2, 2009
Last Updated: September 8, 2015
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Multiple Sclerosis
Muscle Spasticity
Pathologic Processes
Demyelinating Autoimmune Diseases, CNS
Autoimmune Diseases of the Nervous System
Nervous System Diseases
Demyelinating Diseases
Autoimmune Diseases
Immune System Diseases
Muscular Diseases
Musculoskeletal Diseases
Muscle Hypertonia
Neuromuscular Manifestations
Neurologic Manifestations
Signs and Symptoms processed this record on January 17, 2017