NephrologyBiogen
Biogen Reports Phase 2 Results for Felzartamab in IgA Nephropathy
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Biotechnology Media Insights
Editorial Team · September 8, 2025
Biogen announces Phase 2 IGNAZ trial results showing felzartamab significantly reduces proteinuria in patients with IgA nephropathy.

Biogen today announced results from the Phase 2 IGNAZ trial evaluating felzartamab in patients with IgA nephropathy (IgAN). The trial demonstrated significant reductions in proteinuria, as measured by urine protein-to-creatinine ratio, compared to placebo at week 36.
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