Total Revenue and Product Contributions (Q1 2026)
Total revenue of $136 million in Q1 2026. Product contributions: Crysvita $93M (North America $39M, Latin America & Turkey $46M, Europe $8M), Dojolvi $18M, Evkeeza $18M, Mepsevii $7M.
Year Guidance Reaffirmed (2026)
Reaffirmed 2026 revenue guidance of $730M–$760M, representing 8%–13% growth over 2025 (guidance excludes potential revenue from new product launches).
Strong Evkeeza Growth
Evkeeza Q1 revenue of $18M, representing 64% growth versus Q1 2025, driven by international launches and expanding access across territories.
Commercial Scale and Patient Reach
Commercial presence in more than 35 countries. Crysvita: ~30 new patients started in Q1 in Latin America bringing that region to >950 patients. Dojolvi: >675 reimbursed patients in North America and ~300 in Europe (named/early access). Evkeeza: ~370 patients across 18 countries.
Pipeline Milestones and Upcoming Regulatory Catalysts
Two near-term PDUFA dates: DTX401 (Aug 23, 2026; no advisory committee planned) and UX111 (Sep 19, 2026). GTX-102 Aspire Phase 3 top-line readout expected in second half of 2026; Aurora study enrollment progressing to expand ages/genotypes.
Promising GTX-102 Phase 1/2 Long-Term Data
Phase 1/2 program: 74 patients treated, 66 in long-term extension (avg ~3 years on therapy, some ~5 years). Bayley-4 Cognitive raw score at month 12: mean change ~10 points (exceeds meaningful difference of 6 points). Multi-domain Responder Index (MDRI) p-value < 0.0001 at months 12/24/36. No new cases of transient lower extremity weakness reported; favorable long-term safety profile.
Manufacturing and Launch Readiness
Gene therapy manufacturing ramp-up underway: Bedford, MA facility producing drug substance/product for DTX401 and fill/finish for UX111; inventory being built in advance of potential launches to support commercial readiness.
Cost Discipline and Multi-Year Expense Outlook
Reaffirmed R&D and SG&A guidance: combined R&D and SG&A expected to be flat to down low-single-digits versus 2025 for 2026; expecting at least a 15% decrease in combined R&D and SG&A in 2027 versus 2025.
PRV Monetization Assumptions
Company plans to monetize two Priority Review Vouchers (expected to be monetized at ~>$100M each in current modeling) for 111 and 401; potential additional PRV from 102 is upside.
Cash Position and Context
Cash, cash equivalents and marketable securities of $534M as of March 31, 2026; management notes Q1 typically shows higher operating cash use due to annual bonus payouts and some one-time payments.