In Ionis Pharmaceuticals Inc.’s second U.S. FDA approval in under a year, the agency approved Dawnzera (donidalorsen) as a prophylactic therapy in the rare and genetic disease hereditary angioedema (HAE). The approval came as scheduled as the NDA had a PDUFA date of Aug. 21. Dawnzera now joins a market with previously approved drugs for the rare, genetic, life-threatening condition, as well as other companies with HAE drugs in development.