CD38 and Miyoshi myopathy: Indeed, in a model system in which cross‐linking of daratumumab is induced with an anti‐Fc antibody or by cells expressing FcγRI was found to kill CD38‐positive MM tumor cell lines in vitro via programmed cell death (PCD) (M.B. Overdijk, J.H.M. Jansen, M. Nederend, J.J. Lammerts van Bueren, R.W.J. Groen, P.W.H.I.