** Shares of drugmaker Ionis Pharmaceuticals IONS.O rise 3.2% to $44.20
** Company says the U.S. FDA has approved its drug to prevent instances of severe swelling in various parts of the body of patients with a rare genetic disorder
** It says the drug, Dawnzera, will be available in the U.S. in the coming days
** The drug is approved to prevent symptoms of a rare genetic disease called hereditary angioedema (HAE) in adults and pediatric patients over 12 years old
** HAE causes frequent attacks of severe swelling in various parts of the body, including the hands, feet, genitals and face
** Including session moves, stock up 22.2% YTD