MND patient serum γ-glutamyl transferase (GGT) levels positively correlated with both liver dome IHTG (r = 0.58, p = 0.0063, Figure 2A) and ALT (r = 0.41, p = 0.018, Figure 2B), although no difference in GGT levels was observed between the MND and control cohorts. This evidence concerns the gene GPT and mild neurocognitive disorder.