Brain Controlled Spinal Cord Stimulation in Participants With Cervical Spinal Cord Injury for Upper Limb Rehabilitation

Tetraplegia Clinical Trial

— UP2  

Official title:

Brain Controlled Spinal Cord Stimulation in Participants With Cervical Spinal Cord Injury for Upper Limb Rehabilitation (UP2)

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05665998
• Other study ID #: UP2
• Status: Recruiting
• Phase: N/A
• Start date: May 22, 2023
• Est. completion date: July 2025

Study information

• Verified date: May 2023
• Source: Ecole Polytechnique Fédérale de Lausanne
• Contact: Jocelyne Bloch, MD
• Phone: +41 79 556 29 51
• Email: jocelyne.bloch[@]chuv.ch
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Cervical spinal cord stimulation can elicit arm and hand movements through recruitment of proprioceptive neurons in the dorsal roots. In participants with cervical spinal cord injury, the spare roots bellow the lesion can be used to reactivate motor function. Decoding of motor intentions can be achieved through implantable electrocorticography (ECoG) devices.

In this study, the investigators will use an investigational system using ECoG signal recording over the motor cortex to drive muscle specific electrical epidural spinal cord stimulation (EES). The investigators will assess the safety and preliminary efficacy of this system in 3 participants.

Description:

In a current first-in-human clinical trial, called STIMO, Electrical Epidural Spinal Stimulation (EES) is applied to enable individuals with chronic severe spinal cord injury (SCI) to complete intensive locomotor neurorehabilitation training. In this clinical feasibility study, EES triggered an immediate enhancement of walking function, and was integrated in an intensive neurorehabilitation program. This therapy improved leg motor control and triggered neurological recovery in individuals with severe SCI to a certain extent (Wagner et al. 2018, Kathe et al. 2022).

Concurrently, preclinical and clinical evidence demonstrated a similar recruitment of upper limb muscles through cervical spinal cord stimulation, re-triggering arm movements after paralysis. The spatial and temporal modulation of the electrical stimulation can selectively activate muscle groups towards a specific function.

Clinatec (CEA, Grenoble, France) has developed an implantable electrocorticogram (ECoG) recording device with a 64-channel epidural electrode array capable of recording electrical signals from the motor cortex for an extended period and with a high signal to noise ratio. This ECoG-based system allowed tetraplegic patients to control an exoskeleton (Clinicaltrials.gov, NCT 02550522) with up to 8 degrees of freedom for the upper limb control (Benabid et al., 2019). This device has been implanted in 4 individuals so far; one of them has been using this system both at the hospital and at home for more than 3 years.

Another ongoing clinical study: STIMO-BSI (Brain Spine Interface) (Clinicaltrials.gov:

NTC04632290), is combining the EES and ECoG technology to allow leg motor control in patients with chronic SCI through the decoding of cortical signals.

In this study, the investigators will test the safety and preliminary efficacy of ECoG-controlled EES in individuals with cervical SCI and establish a direct bridge between the participants' motor intention and the spinal cord below the lesion, which could restore voluntary control of arm movements as well as promote neurological recovery when combined with neurorehabilitation.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 3
• Est. completion date: July 2025
• Est. primary completion date: March 31, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 75 Years

Eligibility

• Must provide Informed Consent as documented by signature (Appendix Informed Consent Form),

• Must be at least 18 years old and no older than 75 years old at the time of enrolment,

• Must be suffering from non-progressive traumatic cervical spinal cord injury,

• Must be graded A, B, C, or D in the American Spinal Injury Association (ASIA) Impairment Scale (AIS) classification,

• Must have completed primary standard of care rehabilitation,

• Must be severely impaired in his upper limb function as determined by the investigator,

• Must have sustained the injury at least 6 months before signing the consent form,

• Must be able to understand and interact with the study team in French or English,

• Must agree to comply in good faith with all conditions of the study and to attend all scheduled appointments,

• Must use safe contraception for women of childbearing capacity,

• Must not be pregnant nor breast feeding,

• Must not have history of severe autonomic dysreflexia,

• Must not have brain damage,

• Must not have history of epilepsy,

• Must not have spinal stenosis,

• Must not have gastrointestinal ulcers in the last five years,

• Must not have any psychological disorder,

• Must not have the intention to become pregnant during the course of the study,

• Must not be known or suspected of drug or alcohol abuse,

• Must not have participated in another clinical study using drugs or medical devices within the 30 days preceding and during the present study,

• Must not have previously been injected with stem cells in the spinal cord,

• Must not be the investigator himself, his/her family members, employees or other dependent persons,

• Must not have any unstable or significant medical condition that is likely to interfere with study procedures or likely to confound study endpoint evaluations as determined by the Investigator,

• Must not have any hematological disorders with increased risk for surgical intervention,

• Must not require ventilator support,

• Must not suffer from spinal cord injury from other etiology than traumatic (ischemic, tumoral, autoimmune, etc),

• Must not be subject to spasms that limit the ability of the subject to participate in the study training as determined by the investigator,

• Must not display spinal stenosis or post traumatic damage at location of implantation,

• Must not require the use of an intrathecal baclofen pump,

• Must not be implanted with a device such as pacemakers or defibrillators,

• Must not have any indication that would require an MRI,

• Must not suffer from congenital nor acquired upper limb abnormalities (affection of joints or bones).

Related Conditions & MeSH terms

• Cervical Spinal Cord Injury
• Quadriplegia
• Spinal Cord Injuries
• Tetraplegia
• Wounds and Injuries

Intervention

Device:
• ARC-BSI Cervical system
Unilateral implantation of a 64 channel - ECoG array over the sensory motor cortex combined with an implantation of 32 channel spinal cord stimulation system over the cervical region. The system decodes the motor attempts of the participant and translates those intentions into modulation of electrical stimulation.

Locations

Country	Name	City	State
Switzerland	CHUV	Lausanne	Vaud

Sponsors (1)

Lead Sponsor	Collaborator
Ecole Polytechnique Fédérale de Lausanne

Country where clinical trial is conducted

Switzerland, 

References & Publications (6)

Benabid AL, Costecalde T, Eliseyev A, Charvet G, Verney A, Karakas S, Foerster M, Lambert A, Moriniere B, Abroug N, Schaeffer MC, Moly A, Sauter-Starace F, Ratel D, Moro C, Torres-Martinez N, Langar L, Oddoux M, Polosan M, Pezzani S, Auboiroux V, Aksenova T, Mestais C, Chabardes S. An exoskeleton controlled by an epidural wireless brain-machine interface in a tetraplegic patient: a proof-of-concept demonstration. Lancet Neurol. 2019 Dec;18(12):1112-1122. doi: 10.1016/S1474-4422(19)30321-7. Epub 2019 Oct 3. — View Citation

Kathe C, Skinnider MA, Hutson TH, Regazzi N, Gautier M, Demesmaeker R, Komi S, Ceto S, James ND, Cho N, Baud L, Galan K, Matson KJE, Rowald A, Kim K, Wang R, Minassian K, Prior JO, Asboth L, Barraud Q, Lacour SP, Levine AJ, Wagner F, Bloch J, Squair JW, Courtine G. The neurons that restore walking after paralysis. Nature. 2022 Nov;611(7936):540-547. doi: 10.1038/s41586-022-05385-7. Epub 2022 Nov 9. — View Citation

Larzabal C, Bonnet S, Costecalde T, Auboiroux V, Charvet G, Chabardes S, Aksenova T, Sauter-Starace F. Long-term stability of the chronic epidural wireless recorder WIMAGINE in tetraplegic patients. J Neural Eng. 2021 Sep 9;18(5). doi: 10.1088/1741-2552/ac2003. — View Citation

Lorach H, Charvet G, Bloch J, Courtine G. Brain-spine interfaces to reverse paralysis. Natl Sci Rev. 2022 Jan 18;9(10):nwac009. doi: 10.1093/nsr/nwac009. eCollection 2022 Oct. No abstract available. — View Citation

Rowald A, Komi S, Demesmaeker R, Baaklini E, Hernandez-Charpak SD, Paoles E, Montanaro H, Cassara A, Becce F, Lloyd B, Newton T, Ravier J, Kinany N, D'Ercole M, Paley A, Hankov N, Varescon C, McCracken L, Vat M, Caban M, Watrin A, Jacquet C, Bole-Feysot L, Harte C, Lorach H, Galvez A, Tschopp M, Herrmann N, Wacker M, Geernaert L, Fodor I, Radevich V, Van Den Keybus K, Eberle G, Pralong E, Roulet M, Ledoux JB, Fornari E, Mandija S, Mattera L, Martuzzi R, Nazarian B, Benkler S, Callegari S, Greiner N, Fuhrer B, Froeling M, Buse N, Denison T, Buschman R, Wende C, Ganty D, Bakker J, Delattre V, Lambert H, Minassian K, van den Berg CAT, Kavounoudias A, Micera S, Van De Ville D, Barraud Q, Kurt E, Kuster N, Neufeld E, Capogrosso M, Asboth L, Wagner FB, Bloch J, Courtine G. Activity-dependent spinal cord neuromodulation rapidly restores trunk and leg motor functions after complete paralysis. Nat Med. 2022 Feb;28(2):260-271. doi: 10.1038/s41591-021-01663-5. Epub 2022 Feb 7. — View Citation

Wagner FB, Mignardot JB, Le Goff-Mignardot CG, Demesmaeker R, Komi S, Capogrosso M, Rowald A, Seanez I, Caban M, Pirondini E, Vat M, McCracken LA, Heimgartner R, Fodor I, Watrin A, Seguin P, Paoles E, Van Den Keybus K, Eberle G, Schurch B, Pralong E, Becce F, Prior J, Buse N, Buschman R, Neufeld E, Kuster N, Carda S, von Zitzewitz J, Delattre V, Denison T, Lambert H, Minassian K, Bloch J, Courtine G. Targeted neurotechnology restores walking in humans with spinal cord injury. Nature. 2018 Nov;563(7729):65-71. doi: 10.1038/s41586-018-0649-2. Epub 2018 Oct 31. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of treatment-related serious adverse events (SAEs).		Through completion of the study 12 months
Secondary	Graded and Redefined Assessment of Strength Sensibility, and Prehension (GRASSP) score	0-232 points, higher score indicating better performance	7 months
Secondary	Action Research Arm Test (ARAT) score	0-57 points, higher score indicating better performance	7 months
Secondary	Capabilities of the Upper Extremity Test (CUE-T)	0-68 points, higher score indicating better performance	7 months
Secondary	Range of Motion (in rad)		7 months
Secondary	Grasp force (in N)		7 months
Secondary	Pinch force (in N)		7 months
Secondary	International Standards for Neurological Classification of SCI (ISNCSCI) score	0-324 points, higher score indicating better function	7 months
Secondary	Maximum voluntary contraction (in N.m)		7 months
Secondary	Somato-sensory evoked potential amplitude (in mV)		7 months