Biogen's Strategic Direction - Biogen is broadening its portfolio across Neuro, Immunology & Rare Disease, aiming for long-term sustainable growth[4,17] - Approximately 50% of Biogen's total company revenue is projected to come from outside of MS, including Biosimilars[17] Felzartamab's Potential in Nephrology - Felzartamab targets CD38-expressing cells, offering a differentiated approach for antibody-mediated diseases[27,29] - Phase 3 programs for Felzartamab are underway, targeting Antibody Mediated Rejection (AMR), IgA Nephropathy (IgAN), and Primary Membranous Nephropathy (PMN)[106] Antibody Mediated Rejection (AMR) - Late AMR affects approximately 11,000 patients in the U S, with >75% transplant loss and a median graft survival of ~2 years after diagnosis[36,37,40] - In a Phase 2 study, Felzartamab treatment resulted in >80% biopsy late AMR resolution at week 24, compared to 20% in the placebo group[53] - A Phase 3 study for Felzartamab in late AMR is underway, with data expected in 2027[56] IgA Nephropathy (IgAN) - IgAN affects approximately 130,000 patients in the U S, with up to 40% of patients reaching end-stage kidney disease within 20 years of diagnosis[61] - Phase 2 data showed that with 5 months of Felzartamab treatment, patients had sustained clinical benefit out to 2 years, with ~50% UPCR reduction at 24 months in the 9-dose group[69,71] - A Phase 3 study for Felzartamab in IgAN is designed to demonstrate improvement in kidney function, with data expected in 2029[74] Primary Membranous Nephropathy (PMN) - PMN affects approximately 36,000 patients in the U S, with up to 40% progressing to end-stage kidney disease within 15 years[80,81,103] - Phase 2 data showed robust and sustained reductions in anti-PLA2R and improvements in both newly diagnosed/relapsed (NDR) and refractory PMN patients[103] - A Phase 3 study for Felzartamab in PMN is designed to demonstrate complete remission of proteinuria, with data expected in 2029[100]