A new drug has been approved by the US Food and Drug Administration for polycythemia vera, a rare disease that causes the bone marrow to make too many red blood cells, which can thicken the blood and cause clots. Besremi (ropeginterferon alfa-2b-njft) is the first approved medicine for this disease that patients can take, irrespective of their treatment history. It is also the first interferon therapy specifically approved for polycythemia vera.
