Seven genes (PRRT1, SLITRK4, CRHBP, HAPLN1, SRGN, EREG and WNT5A) were found to be commonly dysregulated when analysis was restricted to two tissues (cumulus cells and subcutaneous adipose tissue) using GPL570 platform for lean PCOS (Supplementary Table S5). The gene discussed is EREG; the disease is polycystic ovary syndrome.