In part, the present disclosure relates methods for treating, preventing, or reducing the severity of a myeloproliferative disorder (e.g.,
polycythemia vera, essential thrombocythemia, and
myelofibrosis) or one or more complications of a myeloproliferative disorder. The present disclosure further relates methods for treating, preventing, or reducing the severity of a
Janus kinase-associated disorder or one or more complications of a
Janus kinase-associated disorder. In certain aspects the disclosure provides TβRII antagonists for treating, preventing, or reducing the severity of a myeloproliferative disorder (e.g.,
polycythemia vera, essential thrombocythemia, and
myelofibrosis) or a
Janus kinase-associated disorder or one or more complications of a myeloproliferative disorder or a Janus
kinase-associated disorder.