SIGMAR1 and X-linked distal spinal muscular atrophy type 3: Interestingly, 5/44 patients had pathogenic or likely pathogenic variants in NMD genes other than CMD: one variant in the HSPG2 gene related to Shwartz-Jampell syndrome, one variant in the GDAP gene related to hereditary sensory motor neuropathy, and one in SIGMAR1 gene related to distal spinal muscular atrophy.