 CAMBRIDGE, Mass. SALISBURY, England--BUSINESS WIRE--- KALV--KalVista Pharmaceuticals, Inc. NASDAQ: KALV, a clinical stage pharmaceutical company focused on the discovery, development, and commercialization of small molecule protease inhibitors, today announced positive topline data from a Phase 2 clinical trial demonstrating statistically and clinically significant efficacy of KVD900 as an oral on-demand treatment for hereditary angioedema HAE attacks. We are very excited to share this positiv 