SOD1 and amyotrophic lateral sclerosis: One of the miRNAs that gained particular attention in ALS is miRNA(miR)-155, already described in fALS and sALS patients (Koval et al., 2013), and also in the pre-symptomatic mutated superoxide dismutase 1 (mSOD1) mice, even before MN loss (Cunha et al., 2018), pointing this miRNA as a promising biomarker in ALS.