IL6 and neuroblastoma: The logistic regression analysis employed to assess the distribution of IL-8 genotypes rs1800795, rs4073, and rs2227306, with respect to serum levels in NB patients, revealed that 73% of NB patients with GC and CC genotypes of the rs1800795 polymorphism presented low levels of IL-6 in circulation compared to the patients with the GG genotype.