“…But to some extent, single administration of PD-1 DNR CAR-T cells provided much more convenience than repeated antibody administrations and might reduce the incidence of immune-related adverse events (IRAEs). Additionally, a recent study reported that a CD200R-CD28 switch optimally outperformed in enhancing CAR-T function in CD200 + multiple myeloma (MM) models than the approach of CD200R-dominant negative [ 6 ]. And surprisingly, the CD200RKO unexpectedly reduced cytotoxicity conversely.…”