Abstract: Methods for using BMP9 or an agonist thereof to reduce metastasis of cancer are disclosed. The method may include administering an effective amount of BMP9 or an agonist thereof to a subject in need thereof, to reduce metastasis of cancer. The subject may be a human.

Abstract: Disclosed is a method for reducing metastasis and/or tumor growth in a subject with cancer by administering an effective amount of an inhibin antibody to the subject with cancer. In particular, the subject may have ovarian cancer and the administration of inhibin antibody may impair tumor growth.

Abstract: Contact of endothelial cells with inhibitors of inhibin and/or the alpha subunit of inhibin can be utilized to modify the activity of endothelial cell expression products including SMAD 1/5. Methods can also include inhibiting Alk1 and/or endoglin as components of inhibin-activated pathway of SMAD 1/5 signaling. Methods can be combined with other anti-angiogenesis therapies such as anti-VEGF therapies. Methods can be utilized in treatment of inhibin-expressing cancers (e.g., ovarian cancer, pancreatic cancer) as well as other pathologies such as preeclampsia and PCOS.

Abstract: Contact of endothelial cells with inhibitors of inhibin and/or the alpha subunit of inhibin can be utilized to modify the activity of endothelial cell expression products including SMAD 1/5. Methods can also include inhibiting Alk1 and/or endoglin as components of inhibin-activated pathway of SMAD 1/5 signaling. Methods can be combined with other anti-angiogenesis therapies such as anti-VEGF therapies. Methods can be utilized in treatment of inhibin-expressing cancers (e.g., ovarian cancer, pancreatic cancer) as well as other pathologies such as preeclampsia and PCOS.