CD40LG and COVID-19: Twenty-two patients (asymptPAT, mean age: 45.0 ± 11.7, 14 females/8 males, IgG = 186 ± 118 kU/l, IgM = 14 ± 5 kU/l, IgA < the detection capability of the method 5 kU/l in 18 patients, in the rest 5 patients IgA = 13 ± 8 kU/l) were asymptomatic without any post-COVID-19 neuropsychological symptoms (according to an anamnestic questionnaire).