SDC1 and Miyoshi myopathy: In general, there was good correlation with differentially expressed genes in TLDA arrays compared to the PIQOR array (r = 0.64; Supplementary Figure S1B) and 20 of the 47 genes were validated to have ≥ 2-fold change in expression across MM patient samples and cell lines when compared to normal CD138+ cells (Supplementary Figure S1C).