However, it is noteworthy that the autopsy myocardial specimens of the non-DMD group also displayed fibrosis against underlying pathological conditions, including amyotrophic lateral sclerosis, neurofibrillary dementia, distal myopathy, spinal muscular atrophy, anti-SRP antibody positive reaction, and necrotizing myositis (Table 1). This evidence concerns the gene UCN2 and proximal spinal muscular atrophy.