FDA approves 1st drug for rare immune disease HLH
The U.S. Food and Drug Administration today approved Gamifant (emapalumab-lzsg) for the treatment of pediatric (newborn and above) and adult patients with primary hemophagocytic lymphohistiocytosis (HLH) who have refractory, recurrent or progressive disease or intolerance with conventional HLH therapy. This FDA approval is the first for a drug specifically for HLH.

HLH is a condition in which the body’s immune cells do not work properly. The cells become overactive releasing molecules, which leads to inflammation. The immune cells start to damage the body’s own organs, including the liver, brain and bone marrow. It can be inherited, which is known as primary or “familial” HLH. It can also have non-inherited causes. People with primary HLH usually develop symptoms within the first months or years of life. Symptoms may include fever, enlarged liver or spleen and decreased number of blood cells.

Common side effects reported by patients receiving Gamifant in clinical trials included infections, hypertension, infusion-related reactions, low potassium and fever. Patients receiving Gamifant should not receive any live vaccines and should be tested for latent tuberculosis. Patients should be closely monitored and treated promptly for infections while receiving Gamifant.

Read more here: https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm626263.htm
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