The U.S. FDA approved Besremi (ropeginterferon alfa-2b-njft) injection to treat adults with polycythemia vera, a blood disease that causes the overproduction of red blood cells. The excess cells thicken the blood, slowing blood flow and increasing the chance of blood clots.
Besremi has a longer half-life than do other pegylated interferon-alfas, allowing for dosing every 2 weeks instead of weekly.
Besremi can cause liver enzyme elevations, low levels of white blood cells, low levels of platelets, joint pain, fatigue, itching, upper airway infection, muscle pain and flu-like illness. Side effects may also include urinary tract infection, depression and transient ischemic attacks. May cause or worsen neuropsychiatric, autoimmune, ischemic and infectious diseases.
Source: FDA