SOD1 and Parkinson disease: The exact mechanisms of SOD1 self‐assembly appear to differ between misfolded species; SOD1 aggregates identified in post‐mortem SOD1‐linked familial ALS[90a] and sporadic ALS[90b] spinal cord, and Parkinson's disease brain,[13] exhibit substantial morphological variability, and the aggregation rates of different SOD1 mutants fluctuate considerably (Table 2).