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Cervical Spinal Cord InjuryUP2NCT05665998

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

A study testing ARC-BSI Cervical system in people with Cervical Spinal Cord Injury and Tetraplegia, run by Ecole Polytechnique Fédérale de Lausanne at 1 site in Switzerland.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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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. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Cervical Spinal Cord Injury, Tetraplegia
What is being tested?
ARC-BSI Cervical system
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
3 participants
Where
1 siteSwitzerland
Study dates
22 May 2023to 31 Dec 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult
  • 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).

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Jocelyne Bloch, MD contact

+41 79 556 29 51

jocelyne.bloch@chuv.ch

Henri Lorach, PhD contact

+41 77 495 50 48

henri.lorach@epfl.ch

Switzerland1 site, 1 recruiting
  • CHUV

    Lausanne, Canton of Vaud, 1011

    Jocelyne Dr Bloch, Prof. Dr.

    Recruiting

Other trials in Switzerland

About this study

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

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.

Read the detailed 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.

Being tested
ARC-BSI Cervical system
Keywords
Spinal cord stimulation, Brain computer interface, Brain spine interface
Medical subject headings
Quadriplegia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ARC-BSI Cervical systemDevice

    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.

Study groups in NCT05665998
Study groupRoleWhat they receive
ARC-BSI Cervical RehabilitationExperimentalImplantation of a neuroprosthetics system composed of an electrocorticography acquisition system (WIMAGINE) and a cervical epidural electrical spinal cord stimulation system (ARC-IM) to restore voluntary arm movements in participants with SCI.
Receives: Device: ARC-BSI Cervical system

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of treatment-related serious adverse events (SAEs).

    Measured: Through completion of the study 12 months

Secondary outcomes (9)
  1. Graded and Redefined Assessment of Strength Sensibility, and Prehension (GRASSP) score

    0-232 points, higher score indicating better performance

    Measured: 7 months

  2. Action Research Arm Test (ARAT) score

    0-57 points, higher score indicating better performance

    Measured: 7 months

  3. Capabilities of the Upper Extremity Test (CUE-T)

    0-68 points, higher score indicating better performance

    Measured: 7 months

  4. Range of Motion (in rad)

    Measured: 7 months

  5. Grasp force (in N)

    Measured: 7 months

  6. Pinch force (in N)

    Measured: 7 months

  7. International Standards for Neurological Classification of SCI (ISNCSCI) score

    0-324 points, higher score indicating better function

    Measured: 7 months

  8. Maximum voluntary contraction (in N.m)

    Measured: 7 months

  9. Somato-sensory evoked potential amplitude (in mV)

    Measured: 7 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Dec 2022
  2. Study start22 May 2023
  3. Primary completion31 Dec 2026 (estimated)
  4. Study completion31 Dec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
single-site, single-arm, non-blinded, non-randomized, interventional
Masking
None (open label)
Enrolment
3 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05665998
Sponsor's protocol ID
UP2
Acronym
UP2
Status last verified
Apr 2026
First submitted
14 Dec 2022
Last updated
23 Apr 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • 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.

    PubMed 30382197
  • 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.

    PubMed 36352232
  • 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.

    PubMed 35132264
  • 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.

    PubMed 34425566
  • 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.

    PubMed 31587955
  • 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.

    PubMed 36196116

Questions about this trial

What is this clinical trial studying?

A study testing ARC-BSI Cervical system in people with Cervical Spinal Cord Injury and Tetraplegia, run by Ecole Polytechnique Fédérale de Lausanne at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 23 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jocelyne Bloch, MD (+41 79 556 29 51, jocelyne.bloch@chuv.ch), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of treatment-related serious adverse events (SAEs). (time frame: Through completion of the study 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05665998, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Apr 2026.

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