In a deal that could top out at about $2.2 billion, Septerna Inc. is getting $200 million up front from Novo Nordisk A/S in a collaboration to develop oral treatments for obesity, type 2 diabetes and other cardiometabolic indications. There will be four programs for discovering, developing and commercializing small molecules targeting G protein-coupled receptors, which includes GLP-1, GIP and glucagon receptors, with both companies putting their shoulders to conducting research from discovery to choice of candidate.