The subgroup analysis revealed a positive correlation also in CT-positive patients (ρ = 0.453, p = 0.004), and in patients with incomplete recovery (ρ = 0.394, p = 0.003), but no correlation was found between NF-L levels and AD in patients with complete recovery or in the CT-negative patients (Table 3). The gene discussed is NEFL; the disease is Alzheimer disease.