In these non-obese, non-insulin resistant PCOS women, no difference was found between PCOS and controls for the levels of the following 24 plasma inflammatory proteins: CXCL10, IL5, AZU1, CLEC7A, TBK1, PRKCZ, RPS6KA5, CD40LG, IL34, HMGB1, S100A9, IL1B, CCL19, SIGLEC1, IL10RB, PTGS2, FGF8, IL6, IL10, IL12, IL17, IFN-g, TNF-a. This evidence concerns the gene SIGLEC1 and polycystic ovary syndrome.