IL10 and synovial sarcoma: Concerning the IL10 gene, the genotypic frequencies of both analyzed polymorphisms (rs3024505 and rs1800872) were significantly different between SS patients and controls: the variant allele of rs3024505 resulted to be a susceptibility allele (OR = 1.52), while the variant allele of rs1800872 seemed to confer a protective effect for the development of the disease (OR = 0.65).