Human Immunology Biosciences Inc. (Hi-Bio) is moving ahead to late-stage work after disclosing positive phase II data from two trials testing the monoclonal antibody felzartamab for primary membranous nephropathy (PMN), a rare autoantibody-mediated autoimmune kidney disease and a leading cause of nephrotic syndrome. CEO Travis Murdoch told BioWorld that his firm is “working through designs for the next study, and planning to engage with regulators,” after which more details will be shared. PMN, he added, has “not been heavily trodden, but increasingly there’s a recognition that there’s an important patient and commercial opportunity” in the indication.