HGF and Miyoshi myopathy: Mechanistically, both Notch interactions between MM cells on MMECs and autonomous interactions amongst MMECs lead to the expression of hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF) and the VEGF receptor (VEGFR) (Fig. 3) (Palano et al., 2020; Saltarella et al., 2019).