This research study evaluates if modified stem cells (SB623 cells) given intracranially (into the brain) improve clinical motor function in patients who have experienced a traumatic brain injury (TBI). Cells are administered through a surgical procedure at one of three different cell doses, or participants receive the placebo surgery. Improvements in disability and safety are also being studied.
Who Can Participate
Adult patients with fixed motor deficits from TBI, at least 12 months post-TBI