NFASC and proximal spinal muscular atrophy: It is still important to highlight that NF mutations can also cause hereditary spastic paraplegia (NEFL), spinal muscular atrophy (NEFH) but also myopathy (NEFL), which evidence a broader phenotypic spectrum of NF mutations (Wang and Brown, 2010; Agrawal et al., 2014; Ando et al., 2022).