DNM1L and osteosarcoma: Despite significantly decreased DRP1-activating phosphorylation, the cell cycle progression and growth rates of rhabdomyosarcoma (Figs 5B and S8) and osteosarcoma shDRP1 clones (Figs 5F and S9) were very similar to those of their control counterparts, suggesting that DRP1 is not required for sarcoma cell proliferation.