ClinicalTrials.gg
RecruitingNCT05724173BG-Speech-01Updated Jun 2, 2026

Feasibility of the BrainGate2 Neural Interface System in Persons With Tetraplegia

An interventional study of BrainGate Neural Interface System in Anarthria, Dysarthria and Tetraplegia, sponsored by Leigh R. Hochberg, MD, PhD.. Recruiting at 2 sites in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-06-02.

Sponsored by Leigh R. Hochberg, MD, PhD. · Not applicable, Interventional, and Other

From the registry’s dates

  • Started Oct 2023; still recruiting 3 years later.
Phase
Not applicable
Study type
Interventional
Enrollment
3
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

The purpose of this study is to obtain preliminary device safety information and demonstrate proof of principle (feasibility) of the ability of people with tetraplegia to control a computer cursor and other assistive devices with their thoughts.

Read the detailed description

The goal of the BrainGate2 research and development project is to identify the core methods and features for a medical device that could allow people with paralysis, including severe speech impairment, to recover a host of abilities that normally rely on the hands or on speech.

02

Conditions studied

  • Anarthria
  • Dysarthria
  • Tetraplegia
  • Spinal Cord Injuries
  • Amyotrophic Lateral Sclerosis
  • Brain Stem Infarctions
  • Locked in Syndrome
  • Muscular Dystrophies
03

In context

Dysarthria

60 studies on the registry are indexed under Dysarthria; 19 are open to participants now.

This study's planned enrollment of 3 is below the median of 39 across 44 interventional studies indexed under Dysarthria.

Browse Dysarthria studies →

Lead sponsor

Leigh R. Hochberg, MD, PhD. is the lead sponsor of 6 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Between 18 and 80 years of age.
  • Participants must have a diagnosis of amyotrophic lateral sclerosis (ALS) as verified by a clinical expert in neurologic diseases.
  • Participants with a diagnosis of ALS with anarthria, or severe dysarthria with decline in the preceding four months.
  • Must be within a three-hour drive of the Study site and geographically stable for at least 15 months after enrollment.

Exclusion criteria

Exclusion Criteria:

  • Visual impairment such that extended viewing of a computer monitor would be difficult even with ordinary corrective lenses
  • Chronic oral or intravenous or therapy
  • Other serious disease or disorder that could seriously affect ability to participate in the study

(There are additional exclusion criteria)

Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
3 participants (estimated)

Study arms

  • Other
    BrainGate Neural Interface System

    Placement of the BrainGate2 sensor(s) into the speech-related cortex

    Device: BrainGate Neural Interface System

Interventions

  • DeviceBrainGate Neural Interface System

    Placement of the BrainGate2 sensor(s) into the speech-related cortex

06

What researchers measure

Primary outcomes

  1. Device Safety

    To determine the safety of the Sensor and overall safety of the System. Participants will be considered a success for this safety measure if they are successfully implanted with the Sensor(s) and: 1. the sensors are not explanted for safety reasons during the one-year post-implant evaluation period. 2. there are no device-related Serious Adverse Events that result in death or permanently increased disability during the one-year post-implant evaluation period.

    Time frame: 1 year

Secondary outcomes

  1. Device Feasibility

    The purpose of this feasibility measure is to define the metrics by which a larger trial of intracortical recording for the restoration of speech-based communication might be planned. The secondary endpoints are: Number of participants that are able to use the BrainGate system to communicate via speech decoding: 1. at a rate of at least 5 words per minute and 2. with less than a median word error rate of 50%.

    Time frame: At participant exit from study, or up to 5 years

07

Study locations

2 of 2 sites recruiting
  • Stanford University School of Medicine
    Stanford, California 94305, United States
    Recruiting
    • Jaimie Henderson, M.D. · Contacthenderj@stanford.edu · 650-723-5574
    • Jaimie Henderson, M.D. · Principal investigator
  • Massachusetts General Hospital
    Boston, Massachusetts 02114, United States
    Recruiting
    • Leigh R Hochberg, MD, PhD · Contactlhochberg@mgh.harvard.edu · 617-742-9247
    • Leigh R Hochberg, M.D., Ph.D. · Principal investigator
    • Sydney S Cash, M.D., Ph.D. · Sub investigator
    • Ziv Williams, M.D., Ph.D. · Sub investigator
    • Daniel B Rubin, M.D., Ph.D. · Sub investigator
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05724173
Lead sponsor
Leigh R. Hochberg, MD, PhD.
Responsible party
Leigh R. Hochberg, MD, PhD. (Neurologist, Massachusetts General Hospital) — Sponsor-investigator
First posted
Feb 13, 2023
Start date
Oct 18, 2023
Primary completion
Jul 31, 2027 (estimated)
Completion
Jul 31, 2027 (estimated)
Last update
Jun 2, 2026

Study contacts

Leigh R Hochberg, MD, Ph.D
Contact
lhochberg@mgh.harvard.edu
617-724-9247
Jaimie Henderson, MD
Contact
henderj@stanford.edu
650-723-5574
Jaimie Henderson, MD
principal investigator · Stanford University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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