Question · Q4 2025
Pete Lucas inquired about the potential market size opportunity for FILSPARI in the U.S. for FSGS versus IgAN, and also for market opportunities outside the U.S., specifically in Europe and Japan.
Answer
VP of Strategic Planning and Investment Analytics Lauren Hay stated that consensus estimates for FILSPARI in both IgAN and FSGS are around $1 billion per indication, potentially translating to $90 million in royalty revenue for Ligand for each. She noted FSGS is expected to launch faster due to no existing treatments and Travere's established infrastructure. For Japan, she mentioned IgAN's prevalence and potential for a sizable commercial opportunity, pending approval and pricing.
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