TNFRSF13C and congenital rubella syndrome: The latter replaces the GFP tracker from the prototype vector (BAFF-R:4-1BB:ζ/GFP in a pLenti7.3/v5-DEST lentiviral vector backbone), and can be used as a suicide switch to mitigate cytokine release syndrome (CRS) caused by over-activated CAR T cells [14].