The U.S. Food and Drug Administration (FDA) recently approved Takhzyro (lanadelumab-flyo) as the first preventive monoclonal antibody to treat hereditary angioedema (HAE) to help prevent attacks in patients 12 years and older. HAE is a rare and potentially life-threatening genetic disease that can cause unpredictable, debilitating episodes of painful swelling in the limbs, abdomen and airway.