Table 1. List of clinical trials of T regulatory cell–based immunotherapy. Treatment of Children with Kidney Transplants by Injection of CD4+CD25+FoxP3+ T Cells to Prevent Organ Rejection (NCT01446484) T-Regulatory Cell Infusion Post Umbilical Cord Blood Transplant in Patients with Advanced Hematologic Cancer (NCT00602693) Infusion of T-Regulatory Cells in Kidney Transplant Recipients (the ONE Study) (NCT02091232) T-Regulatory Cell Kinetics, Stem Cell Transplantation, REGKINE NCT00578461 Donor-Alloantigen-Reactive Regulatory T Cell (darTregs) in Liver Transplantation (deLTa) (NCT02188719) Treg Adoptive Therapy for Subclinical Inflammation in Kidney Transplantation (TASK) NCT02088931 Phase 1 Infused Donor T Regulatory Cells in Steroid Dependent/Refractory Chronic GVHD NCT01911039 Donor Regulatory T Cells in Treating Patients with Visceral Acute Graft-versus-Host Disease after Stem Cell Transplant