VEZT and cancer: The index SNP associated with endometriosis on chromosome 2p25.1 is a common splice variant in the oestrogen-responsive growth regulation by oestrogen in breast cancer 1 (GREB1) gene33, 37 and SNPs associated with endometriosis on chromosome 12q22 increase expression of the transmembrane adherens junctions protein coding gene vezatin (VEZT) in RNA from blood and endometrium38.