MBNL1 and myotonic dystrophy type 1: We analyzed splicing changes in a panel of well-characterized MBNL1-dependent targets known to be misspliced in DM1 skeletal muscle: MBNL1 exon 5,13MBNL2 exon 7,13NFIX exon 7,13KIF13A exon 26,13SOS1 exon 21, and CLASP1 exon 1942 (Figure S12B).