Safety and Efficacy of Anti-GPRC5D CAR-T Cells Therapy in the Treatment of r/r MM

"This is a3+3dose escalation study, in which three dose groups are set three different dose levels of CAR-T cells:~Dose level one: 3.0×10\^6 /kg±20%; Dose level two:6.0×10\^6 /kg±20%; Dose level three:1.0×10\^7 /kg±20%."