BRD4 and Miyoshi myopathy: Analogously, circ_0007841 was found to be highly expressed in MM patients and MM cell lines, and related mechanistic research demonstrated that circ_0007841 upregulated the expression of BRD4 by sponging miR-338-3p, restraining the apoptosis of MM cells and accelerating the progression of MM (Wang et al., 2020).