As shown in Figure 2, elevated TGF-β4 mRNA expression was related to poor OS and PFS in women with serous ovarian cancer (HR, 1.17; 95% CI, 1.01–1.37; P = 0.04) (HR, 1.23; 95% CI, 1.07–1.42; P = 0.0047) but exhibited no significant relationship with OS or PFS in women with all ovarian carcinoma and women with endometrioid ovarian carcinoma. This evidence concerns the gene LEFTY2 and ovarian endometrioid carcinoma.