Defects in skeletal myotubes caused by STIM1 I115F that lead to tubular aggregate myopathy and Stormorken syndrome, and their restoration at the cellular level

Using a mouse myotube model, this study characterizes cellular defects caused by the STIM1 I115F mutation and proposes a hypothetical recovery mechanism via codifferentiation with normal myotubes. Our findings suggest that this restoration could be mediated by modulating myogenin, SERCA1a, ORAI1, and TRPC6 expression, providing mechanistic insights into cellular pathways for restoring skeletal muscle function in patients with TAM and STRMK carrying the STIM1 I115F mutation.