Shares of Aclaris Therapeutics (ACRS) rallied 53.2% on Monday and gained another 8.9% during the after-market hours following the signing of an exclusive license agreement with Biosion for global rights (excluding Greater China) to two of the latter’s pipeline candidates, BSI-045B and BSI-502.Biosion’s BSI-045B, a novel anti-TSLP monoclonal antibody, is currently in clinical development in the United States for treating moderate-to-severe atopic dermatitis. Results from a completed phase IIa proof-of-concep ...