MLPA results were selected from a normal control (1), a multi-exon deletion (2), a multi-exon duplication (3), a single-exon duplication (4), and a single-exon deletion (5). Raw data are shown on the left panels (A). Each peak represents one exon of the dystrophin gene. Arrow(s) indicate missing signals representing deleted exon(s). The corresponding relative peak area (RPA) ratios, after statistical analysis, are shown on the right panels (B), in which each bar represents the RPA ratio compared to the mean of two male control samples.