Overview of Befrena’s U.S. Regulatory Milestone Elanco announced that Befrena™ (tirnovetmab), a novel anti-IL31 monoclonal antibody injection, has received approval from the U.S. Department of Agriculture (USDA). This marks a significant regulatory achievement for Elanco in the estimated $1.3 billion U.S. canine dermatology market, and it introduces a new targeted option for dogs suffering from…