GAPDH and Duchenne muscular dystrophy: (B) Bar graphs show the expression profile of MYH isoforms and MYOG isoforms normalized to GAPDH in hiPS cell-derived myotubes from two DMD (DMD one and DMD 2), two DM1 (DM1-1 and DM1-2) and one LGMD2A patients differentiated with small molecule combinatorial or DMSO treatments.