In the subgroup analysis, only lean women with PCOS had higher levels of IL-1a, IL-3, IL-4, IL-8, IL-9, IL-12, IL-13, IL-15, TNF- α and -β, SCD40L, FKN, Eotaxin, MCP-3, and MIP-1b compared to the control group (p < 0.005). This evidence concerns the gene IL9 and polycystic ovary syndrome.