Study of Intramuscular Injections of ABBV-950 to Assess Adverse Events and Change in Disease Activity in Adult Participants With Upper Limb Spasticity

Study Identifier
M23-499
CT.gov Identifier
NCT05956509
EudraCT Identifier
Not available
EUCTIS ID
Not available
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Study Details

Medical Condition
  • Movement Disorders - Other
    • Study Drug
  • ABBV-950
  • BOTOX
  • Placebo for ABBV-950
    • Phase
    Phase 1
    Sex
    Female & Male
    Age
    18 - 80 Years
    Inclusion and Exclusion Criteria
    Inclusion Criteria:
    * Diagnosis of upper limb spasticity due to stroke, with most recent stroke occurring at least 12 weeks prior to the Screening visit. * Modified Ashworth Scale-Bohannon (MAS-B) score of \>= 3 in the wrist flexors, and a score of \>= 1+ in the finger flexors and MAS-B score of \>= 2 elbow flexors at both Screening and Visit 2 (Baseline).
    Exclusion Criteria:
    * Additional strokes in the 12 weeks preceding the most recent stroke and in the opinion of the investigator, is not at significant risk of experiencing another stroke during the study period. * Spasticity in the contralateral upper limb that requires treatment. * Presence of fixed contractures in muscles of wrist, elbow, fingers. * Botulinum toxin treatment of any serotype in the 20 weeks prior to Day for upper limb spasticity and in the 12 weeks prior to Day 1 for any indication other than upper limb spasticity. * Previous surgical intervention, nerve block, or muscle block for the treatment of spasticity in the study limb in the last 12 months. * Injection of corticosteroids or anesthetics in the study limb within 12 weeks. * Casting of the upper limbs within 12 weeks. * Diagnosis of myasthenia gravis, Eaton-Lambert syndrome, and/or amyotrophic lateral sclerosis.

    Protocol Summary

    Spasticity is often observed as muscle tightness and stiffness in the upper and/or lower limbs. Upper limb spasticity can interfere with joint movement and its severity can range from mild to severe. Common causes of spasticity include cerebral palsy, traumatic brain injury, multiple sclerosis, spinal cord injury, and stroke. This study will assess how safe and effective ABBV-950 is in treating upper limb spasticity in adult post-stroke participants. Adverse events and change in symptoms will be assessed.

    ABBV-950 in an investigational drug being developed for treating spasticity. This study is conducted in 2 parts. In Part 1, participants are assigned to receive different doses of ABBV-950 or placebo. There is 1 in 4 chance that participants will be assigned to receive placebo. In Part 2, participants will be randomly assigned to receive BOTOX, ABBV-950, or placebo. There is 1 in 5 chance for participants to receive placebo. Approximately 297 adult post-stroke participants with upper limb spasticity will be enrolled at approximately 50 sites in the United States.

    In Part 1, participants will receive intramuscular (IM) injections of ABBV-950 or placebo on Day 1. In Part 2, participants will receive IM injections of BOTOX, ABBV-950, or placebo on Day 1. All participants will be followed for 24 weeks.

    There may be higher treatment burden for participants in this trial compared to the standard of care. Participants will attend regular clinic visits during the study. The effect of the treatment will be checked by medical assessments, checking for side effects and completing questionnaires.

    Study Locations

    Location
    Status
    Location
    North County Neurology Associates /ID# 256333
    Carlsbad, California, United States, 92011-4213
    Status
    Not applicable
    Location
    Rancho Los Amigos National Rehabilitation center /ID# 255335
    Downey, California, United States, 90242
    Status
    Not applicable
    Location
    Neuro Pain Medical Center /ID# 256036
    Fresno, California, United States, 93710-5473
    Status
    Not applicable
    Location
    New England Institute for Clinical Research /ID# 255020
    Stamford, Connecticut, United States, 06905
    Status
    Not applicable
    Location
    MedStar National Rehabilitation Hospital /ID# 255630
    Washington D.C., District of Columbia, United States, 20010
    Status
    Not applicable
    Location
    JEM Research Institute /ID# 258782
    Lake Worth, Florida, United States, 33462-1141
    Status
    Not applicable
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