Table 5 summarizes the correlation between serum SARM1 and the clinical parameters among the groups stratified by the number of previous COVID-19 vaccinations: group A (a single dose of COVID-19 vaccine) and group B (two doses of COVID-19 vaccine). We identified a positive correlation between serum SARM1 with the duration of diabetes (DD), MNSIe, and NSS in group A (p ≤ 0.05). The gene discussed is SARM1; the disease is diabetes mellitus.