NZ 590326 Disclosed is the use of an ActRIIa polypeptide in the preparation of a medicament for treating anaemia in a patient in need thereof, wherein the ActRIIa polypeptide is as defined in the specification, and wherein the anaemia is selected from: a hypoproliferative anaemia, an iron-deficiency anaemia, a microcytic anaemia, and an anaemia that results from a myelosuppressive therapy. Reference Has Been Directed By The Commissioner Under Section 16 To Patent Specification No 577847.