Another GWAS on 2,109 cases of endometriosis in 2013 performed by Albertsen et al also showed that SNPs associated with WNT4 were associated with the development of endometriosis [19], confirming results previously seen by Uno et al in 2010 [20] and Painter et al in 2011 [21]. The gene discussed is WNT4; the disease is endometriosis.