In our MND probands, significant associations were found for rs12608932 (unc-13 homolog A, C. elegans [UNC13A]; RR = 5.65; p-value = 0.003; recessive genotypic model) and rs1800435 (delta-aminolevulinate dehydratase [ALAD]; 0.0% death in carriers of minor allele versus 15.9% in non-carriers; p-value = 0.003; dominant genotypic model). This evidence concerns the gene ALAD and mild neurocognitive disorder.