Notably, we found that a variety of inflammation-related proteins, such as CD14, FABP5, IKBKB, FOS, IRF9, NFYB, NR4A1 and SEMA7A, as well as proteins associated with cytokine and chemokine release, such as HMGB1 and PPBP (CXCL7), were upregulated in PCOS patients with a normal BMI (Supplementary Table 4). Here, HMGB1 is linked to polycystic ovary syndrome.