To test assembly of dystrophin with the DGC, membrane preparations were prepared from iPSC‐CMs, solubilized and passed over wheat germ agglutinin affinity columns, which demonstrated that dystrophin co‐purified with glycoprotein fractions similar to adult heart tissue from normal and Becker muscular dystrophy patients with a truncated dystrophin allele (Figure 1D). Here, DMD is linked to Becker muscular dystrophy.