Word recently from Nexcella Inc. of progress in its potentially BLA-enabling phase Ib/IIa study, with the BCMA-targeted, autologous CAR T therapy called NXC-201 for relapsed/refractory (r/r) multiple myeloma and r/r amyloid light chain amyloidosis, helped put nearer to center stage the class, which has proven attractive to a handful of developers. Among others in the space are Arcellx Inc. and Gracell Biotechnologies Inc.