IL10 and myalgic encephalomeyelitis/chronic fatigue syndrome: IL-10 expression levels showed a strong inverse relationship with CFS susceptibility in both univariate (Coefficient = −0.442, OR = 0.643, p = 0.038) and multivariate analyses (Coefficient = −0.599, OR = 0.549, p < 0.001), indicating that higher levels of IL-10 were protective against CFS (Table 8).