DMD and Duchenne muscular dystrophy: The results of routine SNV analysis of the WES data were still negative; however, CNV and breakpoint analysis of the WES data suggested a possible out-of-frame deletion (representing most mutational events in patients with severe DMD) of c.7310-11543_7359del (chrX:g.31792260_31803852del) of DMD (Figure 1C–E).