Abstract: In some aspects, the disclosure relates to GDF/BMP antagonists and methods of using GDF/BMP antagonists to treat, prevent, or reduce the progression rate and/or severity of pulmonary hypertension (PH), particularly treating, preventing or reducing the progression rate and/or severity of one or more PH-associated complications. The disclosure also provides methods of using a GDF/BMP antagonist to treat, prevent, or reduce the progression rate and/or severity of a variety of conditions including, but not limited to, pulmonary vascular remodeling, pulmonary fibrosis, and right ventricular hypertrophy. The disclosure further provides methods of using a GDF/BMP antagonist to reduce right ventricular systolic pressure in a subject in need thereof.

Abstract: In some aspects, the disclosure relates to GDF/BMP antagonists and methods of using GDF/BMP antagonists to treat, prevent, or reduce the progression rate and/or severity of pulmonary hypertension (PH), particularly treating, preventing or reducing the progression rate and/or severity of one or more PH-associated complications. The disclosure also provides methods of using a GDF/BMP antagonist to treat, prevent, or reduce the progression rate and/or severity of a variety of conditions including, but not limited to, pulmonary vascular remodeling, pulmonary fibrosis, and right ventricular hypertrophy. The disclosure further provides methods of using a GDF/BMP antagonist to reduce right ventricular systolic pressure in a subject in need thereof.

Abstract: In certain aspects, the present invention provides compositions and methods for increasing thermogenic adipocytes (e.g., brown adipocytes or other UCP-1 expressing adipocytes) by administering an antagonist of an ActRIIB signaling pathway. Examples of such antagonists include ActRIIB polypeptides, anti-ActRIIB antibodies, anti-myostatin antibodies, anti-GDF3 antibodies, anti-Nodal, anti-activin, and anti-GDF11 antibodies. A variety of metabolic and other disorders may be treated by causing an increase in thermogenic adipocytes.

Abstract: In certain aspects, the present invention provides compositions and methods for increasing red blood cell and/or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

Abstract: This disclosure provides ALK7-binding proteins such as anti-ALK7 antibodies, and compositions and methods for making the ALK7-binding proteins. In certain embodiments the ALK7-binding proteins inhibit, or antagonize ALK7 activity. In addition, the disclosure provides compositions and methods for diagnosing and treating overweight, obesity, diabetes, overweight, obesity, type 2 diabetes, and their associated conditions; metabolic disorders, and other diseases or conditions that can be treated, prevented or ameliorated by targeting ALK7.

Abstract: In certain aspects, the present invention provides compositions and methods for modulating (promoting or inhibiting) growth of a tissue, such as bone, cartilage, muscle, fat, and/or neuronal tissue. The present invention also provides methods of screening compounds that modulate activity of an ActRIIB protein and/or an ActRIIB ligand. The compositions and methods provided herein are useful in treating diseases associated with abnormal activity of an ActRIIB protein and/or an ActRIIB ligand.

Abstract: In certain aspects, the disclosure provides ALK7 antagonists. In certain aspects, these ALK7 antagonists are can be used to improve metabolic parameters in a patient in need thereof. In certain aspects, these ALK7 antagonists can be used to treat or prevent one or more kidney-associated disease or condition in a patient in need thereof. In certain aspects, these ALK7 antagonists can be used to treat or prevent cancer.

Abstract: In certain aspects, the disclosure provides soluble heteromeric polypeptide complexes comprising an extracellular domain of an ALK7 receptor and an extracellular domain of ActRIIB In certain aspects, these ALK7:ActRIIB heteromultimers are can be used to improve metabolic parameters in a patient in need thereof. In certain aspects, these ALK7:ActRIIB heteromultimers are can be used to treat or prevent one or more kidney-associated disease or condition in a patient in need thereof.

Abstract: This disclosure provides ALK7-binding proteins such as anti-ALK7 antibodies, and compositions and methods for making the ALK7-binding proteins. In certain embodiments the ALK7-binding proteins inhibit, or antagonize ALK7 activity. In addition, the disclosure provides compositions and methods for diagnosing and treating overweight, obesity, diabetes, overweight, obesity, type 2 diabetes, and their associated conditions; metabolic disorders, and other diseases or conditions that can be treated, prevented or ameliorated by targeting ALK7.

Abstract: In certain aspects, the present invention provides compositions and methods for modulating (promoting or inhibiting) growth of a tissue, such as bone, cartilage, muscle, fat, and/or neuron. The present invention also provides methods of screening compounds that modulate activity of an ActRII protein and/or an ActRII ligand. The compositions and methods provided herein are useful in treating diseases associated with abnormal activity of an ActRII protein and/or an ActRII ligand.

Abstract: In certain aspects, the present invention provides compositions and methods for increasing red blood cell and/or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

Abstract: In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

Abstract: In certain aspects, the present invention provides compositions and methods for modulating (promoting or inhibiting) growth of a tissue, such as bone, cartilage, muscle, fat, and/or neuronal tissue. The present invention also provides methods of screening compounds that modulate activity of an ActRIIB protein and/or an ActRIIB ligand. The compositions and methods provided herein are useful in treating diseases associated with abnormal activity of an ActRIIB protein and/or an ActRIIB ligand.

Abstract: In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

Abstract: In certain aspects, the disclosure provides soluble heteromeric polypeptide complexes comprising an extracellular domain of an ALK7 receptor and an extracellular domain of ActRIIB. In certain aspects, these ALK7:ActRIIB heteromultimers are can be used to improve metabolic parameters in a patient in need thereof. In certain aspects, these ALK7:ActRIIB heteromultimers are can be used to treat or prevent one or more kidney-associated disease or condition in a patient in need thereof.

Abstract: In certain aspects, the present disclosure relates to the insight that a polypeptide comprising a ligand-binding portion of the extracellular domain of activin-like kinase I (ALK1) polypeptide may be used to inhibit angiogenesis in vivo, particularly in mammals suffering angiogenesis-related disorders. Additionally, the disclosure demonstrates that inhibitors of ALK1 may be used to increase pericyte coverage in vascularized tissues, including tumors and the retina. The disclosure also identifies ligands for ALK1 and demonstrates that such ligands have pro-angiogenic activity, and describes antibodies that inhibit receptor-ligand interaction.

Abstract: In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

Abstract: In certain aspects, the present disclosure relates to the insight that a polypeptide comprising a ligand-binding portion of the extracellular domain of activin-like kinase I (ALK1) polypeptide may be used to inhibit angiogenesis in vivo, particularly in mammals suffering angiogenesis-related disorders. Additionally, the disclosure demonstrates that inhibitors of ALK1 may be used to increase pericyte coverage in vascularized tissues, including tumors and the retina. The disclosure also identifies ligands for ALK1 and demonstrates that such ligands have pro-angiogenic activity, and describes antibodies that inhibit receptor-ligand interaction.

Abstract: In some aspects, the disclosure relates to GDF/BMP antagonists and methods of using GDF/BMP antagonists to treat, prevent, or reduce the progression rate and/or severity of pulmonary hypertension (PH), particularly treating, preventing or reducing the progression rate and/or severity of one or more PH-associated complications. The disclosure also provides methods of using a GDF/BMP antagonist to treat, prevent, or reduce the progression rate and/or severity of a variety of conditions including, but not limited to, pulmonary vascular remodeling, pulmonary fibrosis, and right ventricular hypertrophy. The disclosure further provides methods of using a GDF/BMP antagonist to reduce right ventricular systolic pressure in a subject in need thereof.

Abstract: In certain aspects, the present invention provides compositions and methods for promoting hone growth and increasing bone density, as well as for the treatment of multiple myeloma. Methods for dosing a patient with an ActRIIb antagonist are also provided.