FUT4 and endometriosis: In silico interrogation of published curated datasets also revealed that several FUT genes that could be responsible for the SSEA1 epitope (including FUT3, FUT4 as well as FUT2, FUT5, FUT6, FUT7) and SOX9 gene were up-regulated (and 402/595 of SOX9 regulated genes were differentially regulated) in mid-secretory phase endometria of women with endometriosis compared with the samples of healthy women without endometriosis (Supplementary Figure S1).