KDM1A and Miyoshi myopathy: We found that SP2509 synergistically increased cell death when used in combination with CFZ in a panel of four PI-resistant MM cell lines (Fig. 3A, Additional file 1: Table S1) and in eight out of ten PI-sensitive cell lines (Fig. 3B), confirming that the synergy between LSD1 and proteasome inhibition is not limited to resistant cells.