Amplyx Pharmaceuticals Inc., of San Diego, said it raised $67 million through a series C financing led by Sofinnova Venture Partners, which included other new investors Lundbeckfonden Ventures, London-based Arix Bioscience plc and Pappas Capital, as well as existing investors New Enterprise Associates, RiverVest Venture Partners, 3×5 RiverVest II and BioMed Ventures.