GRP78-directed immunotherapy in relapsed or refractory multiple myeloma - results from a phase 1 trial with the monoclonal immunoglobulin M antibody PAT-SM6 oleh Leo Rasche, Johannes Duell, Inês C. Castro, Valentina Dubljevic, Manik Chatterjee, Stefan Knop, Frank Hensel, Andreas Rosenwald, Hermann Einsele, Max S. Topp, Stephanie Brändlein