The best model for predicting the occurrence of neurological symptoms accompanying the COVID-19 disease course consisted of the NR1H2 rs1405655 TT genotype compared to the CC genotype (β = 1.09, p = 0.0059, OR = 2.99, 95% CI 1.39–6.69) and the TMPRSS2 rs4290734 AA genotype compared to the AG genotype (β = 0.71, p = 0.0099, OR = 2.03, 95% CI 1.19–3.50) (Table 3). The gene discussed is TMPRSS2; the disease is COVID-19.