TGFB1 and Duchenne muscular dystrophy: Although primarily a neurogenic disease, ALS muscle pathology shares several features with DMD including muscle atrophy, fibrosis, inflammation, and increased TGFβ signaling [35,36,37,38,39]; this prompted us to assess R-Smads and their impact on myomiRs in human DMD and mdx5cv mouse skeletal muscles.