"Nobody has done this before," Visterra Inc. CEO Brian Pereira told BioWorld, talking about the company's approach in immunoglobulin A (IgA) nephropathy, an effort that is part of what fueled his company's just-finished $46.7 million series C financing. Using computational tools and methods from the Massachusetts Institute of Technology, Visterra is "not an antibody discovery company," he said. "We design and engineer novel antibody-based solutions" that include monoclonal antibodies (MAbs), bispecific antibodies and antibody-drug conjugates (ADCs).