Pharmaceutical Anglo-American pharma company KalVista Pharmaceuticals has won approval from both the European Commission (EC) and Swiss Agency for Therapeutic Products, Swissmedic, for Ekterly (sebetralstat), a novel, oral plasma kallikrein inhibitor, for the symptomatic treatment of acute attacks of hereditary angioedema (HAE) in patients aged 12 years and older. 22 September 2025