Stem Cell Therapy for TBI | Study Eligibility Questionnaire | Have you or Someone You Know Had TBI?

Have You or Someone You Know Had a Traumatic Brain Injury, Also Known as 'TBI'?

A Traumatic Brain Injury (TBI) occurs when a bump, blow, or jolt to the head causes injury to the brain. Falls, sports injuries, motor vehicle accidents, and violence are common causes of TBI.


We are seeking individuals who have had Traumatic Brain Injury (TBI) to participate in current and future research studies for the treatment of TBI. We are currently seeking participants in a clinical trial of modified stem cell therapy for TBI called STEMTRA (STEM cell therapy for TRAumatic brain injury).

Interested participants will complete a questionnaire for a TBI research participant recruitment registry. The information in the registry will be used to identify potential participants for STEMTRA and future clinical research studies.


You may enroll in the participant recruitment registry for TBI research if you:

  • Are age 18 or older
  • Have suffered TBI
  • Have ongoing symptoms as a result of the TBI

Note: Other inclusion and exclusion criteria apply for each study.


The STEMTRA Study, a Phase II clinical trial, is designed to test the safety and efficacy of a modified stem cell therapy that is administered directly to the injured brain through a neurosurgical procedure. Participants will have approximately seven follow-up visits for additional examinations, questionnaires, video recordings, and brain scans over the following 12 months. (See About the Registry for additional details.)


We have developed the online eligibility questionnaire to help to see if you might be a candidate for this research study or for future research studies for TBI. The questionnaire includes detailed questions about your medical history and post-TBI symptoms and takes about 30 minutes to complete.



Information from individuals who complete this questionnaire will be placed in our Participant Recruitment Registry for TBI Research. We will use this information to begin the process of helping you to determine your potential eligibility for the STEMTRA Study and for future studies for TBI. We may also contact you to obtain additional information and to tell you more about future studies that you may qualify for.


What Are Stem Cells?

Stem cells are cells that have the potential to develop into different types of cells within the body. Th STEMTRA Study is investigating whether adult bone-marrow-derived stem cells improve function after TBI.

What is a Clinical Trial?

A clinical trial is a research study designed to assess the safety or efficacy of a treatment or intervention.

What is a Registry?

A participant recruitment registry is a listing of people who are interested in participating in research studies.

How do I find out if I might be eligible for this research study or future research studies?

Click here to take the Eligibility Questionnaire.