TGFB1 and neuroblastic tumor: It was observed that low serum concentrations of IL-10 (p = 0.013; OR = 0.09, 95% CI = 0.01–0.6) and TGF-β (p = 0.04; OR = 0.11, 95% CI = 0.01–0.97) were associated with a decrease in the risk of presenting neuroblastic tumors in localized INSS stages 1 and 2 (Table 5).