Therefore, we conducted pairwise comparisons between the study groups and detected statistically significant differences between patients affected by Korsakoff syndrome and the control group (median CRP level (IQR) 7.65 mg/L (4.23–12.13 mg/L) vs. median CRP level (IQR) 1.15 mg/L (0.53–4.30 mg/L); unadjusted p value = 0.005), as well as between patients affected by Korsakoff syndrome and patients affected by AD (median CRP level (IQR) 7.65 mg/L (4.23–12.13 mg/L) vs. median CRP level (IQR) 1.30 mg/L (0.65–3.95 mg/L); unadjusted p value = 0.006). This evidence concerns the gene CRP and Alzheimer disease.