A: The variant NC_000021.9:g.31668550C>A in gene SOD1 is classified as 'Likely_pathogenic' for Motor_neuron_disease. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0020128,MedGen:C0085084,Orphanet:98503. Review status: criteria provided, single submitter.