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

Stopped early · Phase 1 · Has a placebo group

Conditions studied: Upper Limb Spasticity

In brief

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.

Key facts

Study ID

NCT05956509

Run by

AbbVie

People needed

1

Starts

2024-01-12

Expected to finish

2024-06-02

Last updated by the study team

2024-07-01

Who can join

Age: 18 and older, up to 80. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 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).

You may not qualify if…

• 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.

Where it is running

• North County Neurology Associates /ID# 256333 — Carlsbad, California, United States
• Rancho Los Amigos National Rehabilitation center /ID# 255335 — Downey, California, United States
• Neuro Pain Medical Center /ID# 256036 — Fresno, California, United States
• New England Institute for Clinical Research /ID# 255020 — Stamford, Connecticut, United States
• MedStar National Rehabilitation Hospital /ID# 255630 — Washington D.C., District of Columbia, United States
• JEM Research Institute /ID# 258782 — Lake Worth, Florida, United States
• Kansas Institute of Research /ID# 254998 — Overland Park, Kansas, United States
• University of Missouri Hospital /ID# 255310 — Columbia, Missouri, United States
• Ut Southwestern Medical Center /Parkland Health and Hospital System /Id# 255328 — Dallas, Texas, United States

Full record on ClinicalTrials.gov

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