LEFTY2 and ovarian cancer: The expression of TGF-β1 and TGF-β4 had no association with the prognosis of women with ovarian cancer; nevertheless, high expression of TGF-β3 may be related to poor prognosis, and TGF-β3 may exert its functions at on the posttranscriptional level, but this mechanism needs more study in ovarian cancer.