However, more recent studies demonstrate a significant increase of G-MDSC (CD11b+CD33+HLA‐DR−/lowCD14-CD15+) in BM and PB of MM patients compared to monoclonal gammopathy of undetermined significance (MGUS), smoldering MM patients and healthy controls, while no significance could be observed for M-MDSC (41–44). Here, CD33 is linked to Miyoshi myopathy.