A maximum of 30.7% rescue of CSNK1D exon 9 and 19.9% rescue of MPRIP exon 9 was observed when DM1 hiNeurons were treated with 65 μM or 35 μM erythromycin, respectively (Fig 7c and 7d). This evidence concerns the gene MPRIP and myotonic dystrophy type 1.