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 that the option agreement between KalVista and Merck related to intravitreal diabetic macular edema (DME) candidate KVD001 and future oral DME molecules has expired. “We appreciate Merck’s willingness to work with us on the advancement of p