HITT for the Identification of Mild Traumatic Brain Injury

Head and Intraocular Trauma Tool (HITT) for the Identification of Mild Traumatic Brain Injury

Rebion has developed a device, the Rebion trauma tool (referred to as the head and intraocular trauma tool, or "HITT"), that detects ocular fixation and alignment using a binocular retinal scan. Preliminary data obtained from hospitalized patients with a clinically-confirmed traumatic brain injury (TBI) and uninjured controls indicates that the device can detect changes in ocular fixation, alignment, and saccades that are related to brain injury. This study seeks to evaluate the ability of the Rebion trauma tool to assess perturbations in eye movements resulting from TBI. The study will enroll 100 TBI patients and 100 controls.

Study Overview

• Status: Active, not recruiting
• Conditions: Brain Injuries, Traumatic
• Intervention / Treatment: Device: Head and Intraocular Trauma Tool; Diagnostic test: SCAT-5

• Study Type: Observational
• Enrollment (Estimated): 200

Contacts and Locations

Study Locations

• United States
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19104
      • Penn Presbyterian Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 13 years to 45 years (Child, Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

The study population including target participants that enroll within two weeks of blunt head trauma, with a Glasgow Coma Scale score equal to or greater than thirteen. A minimum of one hundred Target Condition subjects will be enrolled. All studies will be completed on the day of enrollment.

Description

Inclusion Criteria:

1. Age 13-45 years
2. Presents to the facility within 2 weeks of head trauma

3. Able to provide informed consent

   • If minor, then able to provide parental consent and minor assent
4. Able to participate in the examination, including the ability to follow simple instructions
5. Fluency in English or Spanish

Exclusion Criteria:

1. Glasgow Coma Scale score of equal to or less than 13 at the time of study enrollment
2. Under the influence of alcohol or drugs
3. Previous eye surgery
4. Visual acuity known to be 20/200 or less in either eye
5. Known strabismus, amblyopia (lazy eye), or double vision
6. Known eye movement disorder, including nystagmus
7. Known optic nerve disease, including papilledema or optic neuropathy
8. Known retinal disease, including macular degeneration or retinal degeneration
9. Known cataract
10. History of neurosurgery
11. History of stroke/brain hemorrhage, brain tumor, or epilepsy
12. Any head trauma requiring medical attention from a physician within the last 6 months
13. Diagnosed dementia or cognitive impairment requiring assistance for daily living
14. Other condition(s) under the care of a neurologist
15. Psychiatric hospitalization in the last 90 days
16. Subject considered unsuitable for participation in this clinical trial by PI, treating clinician, or study research staff
17. Any minor brain injury regardless of loss of consciousness

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
TBI Patients; TBI participants 13 to 45 years of age, recruited from patients at a clinical research facility who present with head trauma. Clinical evaluation for the patient can be positive (target condition present) or negative (target condition absent) for mTBI. Enrollment is to occur within 2 weeks of the incident injury.	Device: Head and Intraocular Trauma Tool; HITT device to scan eyes of participants up to 3 times (~45 seconds each) at time of admittance to study. Participant is to place chin in chin-rest and fixate on illuminated light on device.; Other Names: HITT; Diagnostic test: SCAT-5; Participant is to complete Step 2 (Symptom Evaluation) and Step 3 (Cognitive Screening) of SCAT-5 test.; Other Names: Sport Concussion Assessment Tool - 5th Edition
Controls; Participants should not be part of the Intended Use Population. Subjects that present to the hospital, clinic or emergency department, either as a patient or non-patient, with no history of head trauma.	Device: Head and Intraocular Trauma Tool; HITT device to scan eyes of participants up to 3 times (~45 seconds each) at time of admittance to study. Participant is to place chin in chin-rest and fixate on illuminated light on device.; Other Names: HITT; Diagnostic test: SCAT-5; Participant is to complete Step 2 (Symptom Evaluation) and Step 3 (Cognitive Screening) of SCAT-5 test.; Other Names: Sport Concussion Assessment Tool - 5th Edition

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
TBI Detection	Patients who have diagnosed TBI and are admitted to the hospital for treatment will have their eyes scanned to identify whether the HITT device can accurately identify patients with TBI.	1 day

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
TBI Monitor	Patients who have remained in the hospital for TBI and received initial HITT device scan will receive a second set of scans at 2 weeks to identify whether the HITT device can accurately identify patients with TBI.	14 days

Collaborators and Investigators

• Sponsor: Rebiscan, Inc.
• Collaborators: University of Pennsylvania
• Investigators: Principal Investigator: Ramon Diaz-Arrastia, MD, PhD, University of Pennsylvania

Study record dates

Study Major Dates

• Study Start (Actual): August 1, 2021
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2026

Study Registration Dates

• First Submitted: October 22, 2021
• First Submitted That Met QC Criteria: October 22, 2021
• First Posted (Actual): October 25, 2021

Study Record Updates

• Last Update Posted (Actual): July 28, 2025
• Last Update Submitted That Met QC Criteria: July 23, 2025
• Last Verified: July 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Craniocerebral Trauma; Trauma, Nervous System; Head Injuries, Closed; Wounds, Nonpenetrating; Brain Injuries, Traumatic; Wounds and Injuries; Brain Injuries; Brain Concussion
• Other Study ID Numbers: 001_Q201535

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Aggregate data and individual test reports will be made available to the HITT device manufacturer to better understand its performance at identifying TBI. Personal identifiable data will not be shared with anyone outside of the University of Pennsylvania.
• IPD Sharing Time Frame: Data will be shared on an ongoing basis, and cumulatively at the end of the study. Study length is expected to be 2 months from the first enrolled participant.
• IPD Sharing Access Criteria: Data will only be shared with researchers involved in the study at the University of Pennsylvania, and only trained staff members at the device manufacturer.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; CSR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes