NCT06791902

Study on Preliminary Safety and Efficacy of Adaptive DBS Aligned to Locomotor States to Improve Locomotor Functions in Parkinson's Patients

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 10 (estimated)
• Sponsor: Jocelyne Bloch · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

At present, there is no cure for Parkinson's disease. The standard treatment involves taking dopaminergic drugs. When drugs lose their effectiveness, they can be supplemented by Deep Brain Stimulation (DBS) therapy. Medication and deep brain stimulation are effective for motor problems such as tremors, slowness of movement, and muscle stiffness. However, there is no effective treatment for walking and balance problems that occur during the course of the disease. DBS neurostimulators not only stimulate, but also record brain activity in the region in which the electrodes are implanted. This brain activity changes over time, depending on the individual's general state (i.e., medication, eating), movements (sitting, standing or walking) and motor problems (i.e., problems of gait initiation and termination, balance problems and freezing of gait). Adaptive deep brain stimulation (aDBS) makes it possible to change the stimulation according to brain activity, and thus to these different states. This method involves using the usual Medtronic Percept neurostimulator with its adaptive therapy active. Additional investigational features for adaptive therapy are available within the study. In this study, we want to evaluate whether adaptive deep brain stimulation is safe and effective in improving walking problems in people with Parkinson's disease.

Detailed description

The hypotheses of the current study are that: HYPOTHESIS 1: Adaptive DBS, aligned in time to the occurrence of locomotor states, facilitates gait initiation, termination, turning, symmetry and adaptations to obstacles by titrating the delivery of stimulation to the dynamics of gait. HYPOTHESIS 2: Enforcing that biomarkers of FoG never exceed an abnormally-high value prevents the occurrence of freezing of gait. The resulting observations will establish a rigorous understanding of motor state-dependent DBS modulations that will open new avenues for the design of evidence-based DBS strategies for locomotor deficits. The study is divided into 3 different phases, which will take place on 3 different days at CHUV, and will be spread over a maximum of 5 weeks: PHASE 1: Eligibility (1 day at CHUV) * Evaluate Feasibility for aDBS * Characterize DBS and Movement Modulations * Assess Global Parkinsonian State PHASE 2: aDBS therapy setup and efficacy evaluation in different conditions (between 2 to 3 days at CHUV) * Optimize aDBS Parameters * Test Safety and Performance * Evaluate Stability and Robustness * Daily Life Use of aDBS The 2 to 3 days of Phase 2 will happenoccur within 10 days.

Conditions

• Parkinson Disease

Interventions

Type	Name	Description
DEVICE	Adaptive DBS	Adapting DBS stimulation based on locomotor states to alleviate gait deficits

Timeline

• Start date: 2025-01-01
• Primary completion: 2027-01-01
• Completion: 2027-01-01
• First posted: 2025-01-24
• Last updated: 2025-12-17

Locations

1 site across 1 country: Switzerland

Regulatory

• FDA-regulated device study