Eli Lilly and Co. tapped Lycia Therapeutics Inc. in a potential $1.6 billion-plus protein-degradation deal that brings $35 million up front and the remainder in would-be preclinical, development and commercial milestone payments, along with mid-single to low double-digit royalties. The multiyear research tie-up and licensing agreement strives to discover, develop and commercialize targeted therapeutics based on Lycia's lysosomal targeting chimera, or Lytac, technology.