CAR CEA CNS Chimeric antigen receptor FoxP3 GITR Gene therapy GvHD Immunotherapy Journal Article LTR MAGE MOG RRE Regulatory T-cell Research Support, Non-U.S. Gov't Rev response element Review T-cell receptor T1DM TGF-β carcinoembryonic antigen central nervous system chimeric antigen receptor glucocorticoid-induced TNFR-related protein graft versus host disease long terminal repeat melanoma-associated antigen myelin oligodendrocyte glycoprotein tTreg