Autologous Stem Cell Study for Adult TBI (Phase 2b)

The purpose of this study is to determine the effect of intravenous infusion of autologous bone marrow mononuclear cells (BMMNC) on brain structure and neurocognitive/functional outcomes after severe traumatic brain (TBI) injury in adults. The primary objective is to determine if the intravenous infusion of autologous BMMNC after severe TBI results in structural preservation of global gray matter (GM) volume and white matter (WM) volume and integrity; as well as select regions of interest in the corpus callosum. THe secondary objectives are to determine if autologous BMMNC infusion improves functional and neurocognitive deficits in adults after TBI; reduces the neuroinflammatory response to TBI; evaluate spleen size and splenic blood flow over time using ultrasound and corresponding changes in inflammatory cytokines; and infusion related toxicity and long-term follow-up safety evaluations.