Study of ATLCAR.CD138 Cells for Relapsed/Refractory Multiple Myeloma

"The MTD is defined as the dose at which approximately 0.20 of subjects experience DLT dose escalation guided by the continual reassessment method (CRM).~Six dose levels will be evaluated:~Dose level 1: 5X10\^6 cells/m\^2 Dose level 2: 1X10\^7 cells/m\^2 Dose level 3: 2.5X10\^7 cells/m\^2 Dose level 4: 5X10\^7 cells/m\^2 Dose level 5: 1x10\^8 cells/m\^2 Dose level 6: 2x10\^8 cells/m\^2~Six subjects will be enrolled at the MTD to better characterize safety at that dose level.~Cell Administration: CAR138 T cells will be given by intravenous injection over through either a peripheral or a central line.~The lymphodepletion regimen will consist of intravenous cyclophosphamide 300 mg/m\^2 and fludarabine 30 mg/m\^2 given once daily for three days."