Summary of Ultragenyx Pharmaceutical Conference Call Company Overview - **Company**: Ultragenyx Pharmaceutical (NasdaqGS:RARE) - **Date**: March 11, 2026 - **Key Speaker**: Eric Crombez, CMO Recent Events and Priorities - **Commercial Success**: - Crysvita continues to show double-digit year-over-year growth - Significant growth in Dojolvi and Evkeeza, with Mepsevii contributing to revenue [4][4] - **Pipeline Focus**: - Emphasis on Angelman syndrome with data readout expected in the second half of the year - Progress in gene therapy pipeline, particularly for GSDIa and Sanfilippo [4][4] Angelman Syndrome Study - **Phase 3 Study Design**: - Primary endpoint will be measured without caregiver input to control for placebo effects [6][7] - Previous Phase 1/2 showed a Bayley Cognition Score improvement of over 10, with a clinically significant difference set at 5 [9][13] - **Statistical Considerations**: - Study powered to show a 10.9 difference in cognition scores from baseline in treated patients, with a flat natural history curve for the placebo group [11][12] - **MDRI Endpoint**: - FDA has agreed to consider the Multi-Domain Responder Index (MDRI) as a secondary endpoint, which captures broader developmental aspects [16][18] Gene Therapy Dosing and Efficacy - **Dosing Strategy**: - Initial dosing informed by animal models, with adjustments made based on clinical data from Phase 1/2 [20][21] - **GTX-102 Potency**: - Claimed to be the most potent ASO in development for Angelman, based on clinical data from 74 patients [22][22] - **Knockdown and Protein Restoration**: - Achieving over 80% knockdown is necessary for clinical benefit, with expectations of around 35% expression needed for efficacy [25][27] DTX401 Gene Therapy - **BLA Acceptance**: - BLA for DTX401 accepted, with a PDUFA date set for August [30][30] - **Manufacturing Control**: - In-house manufacturing facility established to ensure quality and control over production [32][33] - **Durability of Treatment**: - Strong durability observed in Phase I/II patients, supporting confidence in FDA review [34][35] Commercial Opportunity - **Market Potential**: - Approximately 6,000 patients in the U.S. with GSDIa, with high penetration expected due to the necessity of treatment [42][42] Wilson Disease Program - **Efficacy Differentiation**: - Aiming to show positive differentiation from existing chelator treatments, with a focus on the majority of patients coming off chelators [48][49] - **Biomarker Confidence**: - Heparan sulfate is considered a strong biomarker for clinical benefit, with a shift towards clinical approval based on patient outcomes [46][47] Conclusion - Ultragenyx is focused on advancing its gene therapy pipeline, particularly for rare diseases like Angelman syndrome and GSDIa, with promising commercial opportunities and a strong emphasis on clinical efficacy and safety in its studies.

Summary of Ultragenyx Pharmaceutical FY Conference Call Company Overview - **Company**: Ultragenyx Pharmaceutical (NasdaqGS:RARE) - **Event**: 46th Annual TD Cowen Healthcare Conference - **Date**: March 02, 2026 Key Points on Angelman Syndrome - **Aspire Study**: Focused on Angelman syndrome with 130 patients aged 4 to 17 years, primarily with full deletions, aiming for a primary endpoint of cognition based on the Bayley-4 scale [3][4] - **Clinical Significance**: The meaningful score difference (MSD) for cognition is set at +5, with a mean difference of 10.9 observed in actively treated patients compared to a maximum change of 1 in the control group [4][5][6] - **Statistical Power**: The Aspire study is powered for greater than 90% success based on the statistical modeling of natural history data [6] - **Patient Population**: The study enrolls only patients with full deletions to ensure a homogeneous and severe patient population, minimizing variability and placebo effects [10][11] - **Aurora Study**: A phase II/III study supporting the broader Angelman product, focusing on safety and efficacy across different genotypes [14][15] - **Regulatory Strategy**: The Aspire study will form the basis of the approval package, with the Aurora study providing additional safety and efficacy data [16] Insights on Multi-Domain Responder Index (MDRI) - **Endpoints**: The MDRI is a key secondary endpoint, with both cognition and MDRI being treated as primary endpoints in the study [20][22] - **MSD for MDRI**: The MSD for the MDRI is also set at five points, with individual domains having specific MSDs [28][29] Discussion on Setrusumab and Bone Mineral Density - **Setrusumab**: The drug shows benefits in vertebral fractures and bone mineral density, with a focus on translating these findings into functional outcomes [36][37] - **FDA Interaction**: The company is strategizing on how to approach the FDA for accelerated approval based on compelling vertebral data and the need for confirmatory studies [38][39] Sanfilippo Syndrome and Manufacturing Challenges - **FDA Feedback**: The FDA indicated that clinical data is sufficient for approval, but there are challenges related to manufacturing and additional paperwork [46][48] - **Validation Period**: A 2-week validation period is expected for resubmission, with no new clinical data required [49][52] Gene Therapy and Market Considerations - **Unmet Medical Need**: Sanfilippo syndrome represents a high unmet medical need, with a small patient population but significant potential for successful product launch [71][72] - **Pricing Strategy**: The company believes that accelerated approval will not significantly impact pricing, as the focus remains on the high unmet need [43] Future Outlook - **Clinical Data**: Anticipation of data readouts for various studies, including the potential for accelerated approval and the importance of patient-level understanding in ongoing trials [42][75] - **Launch Preparedness**: The company is prepared to launch therapies for Sanfilippo and GSDIa quickly, having prioritized these programs for resource allocation [74] Conclusion - Ultragenyx Pharmaceutical is actively advancing its pipeline for rare diseases, particularly focusing on Angelman syndrome and Sanfilippo syndrome, while navigating regulatory challenges and ensuring robust clinical data to support its therapies.

Core Thesis - Ultragenyx Pharmaceutical Inc. is viewed positively due to its diversified rare disease portfolio and upcoming gene therapy catalysts, despite recent setbacks in clinical trials [1][5]. Financial Performance - The company generates approximately $670 million in annual revenue from four approved products [2]. - Ultragenyx experienced a cash burn of roughly $446 million in the first nine months of 2025, indicating an annualized burn rate of about $600 million against $735 million in cash, providing roughly 1.2 years of runway [4]. Clinical Pipeline - The company has a credible pipeline with significant upcoming events in 2026, including two gene therapy PDUFA decisions for UX111 and DTX401, and Phase 3 data for GTX-102 [2][3]. - UX111 aims to deliver SGSH across the blood-brain barrier, while DTX401 focuses on restoring G6Pase activity in the liver, showing promising Phase 3 data [3]. - GTX-102 targets the UBE3A gene in Angelman syndrome, although it faces challenges related to a narrow therapeutic window [3]. Risks and Challenges - The recent Phase 3 failure of setrusumab highlights the risk that biomarker success does not guarantee clinical benefit [2]. - Manufacturing issues previously led to a Complete Response Letter (CRL) for UX111, indicating potential operational risks [4]. - The intellectual property landscape is mixed, with some gene therapies benefiting from technical barriers, while others face challenges from licensing and generics [4].

Ultragenyx Pharmaceutical (NASDAQ:RARE) is one of the 17 biotechnology stocks with more than 50% upside. On February 3, the price target on Ultragenyx Pharmaceutical (NASDAQ:RARE) was set to $60 by H.C. Wainwright analyst Ram Selvaraju, who maintained a Buy rating on the stock. The analyst’s estimate leads to a promising upside potential of more than 155% from the prevailing level. Adaptive Biotechnologies (ADPT) Hits 3-Year High. Here's Why Pressmaster/Shutterstock.com Selvaraju attributed his views t ...

Core Insights - Ultragenyx has successfully launched four rare disease treatments but has not yet achieved profitability, reporting a net loss of $575 million against full-year revenue of $673 million [3] - The company aims to reach profitability by 2027, although recent setbacks have altered revenue growth expectations [3] Drug Development and Regulatory Challenges - A drug co-developed with Mereo Biopharma failed a Phase 3 trial for osteogenesis imperfecta, and the gene therapy UX111 for Sanfilippo syndrome Type A was rejected by the FDA due to manufacturing concerns [4] - The FDA's rejection of UX111 has created uncertainty regarding biomarker-based approvals in rare diseases and gene therapy, impacting revenue outlook [5] Corporate Restructuring and Financial Projections - Ultragenyx plans to cut 130 jobs, representing 10% of its workforce, as part of a restructuring aimed at supporting profitability by 2027 [6] - The restructuring is expected to keep expenses flat or slightly reduced in 2026, with a projected 15% decrease in expenses by 2027 compared to 2025 [6] - The company anticipates revenue growth of 8 to 13 percent for the current year, despite analysts reducing share price targets due to longer approval timelines [6]

Financial Data and Key Metrics Changes - Total revenue for 2025 was reported at $673 million, representing a 20% growth over 2024 and exceeding the upper end of guidance [11] - Net loss for the year was $575 million, or $5.83 per share [12] - Cash, cash equivalents, and marketable securities as of December 31 were $738 million [12] - Guidance for 2026 total revenue is expected to be between $730 million and $760 million, reflecting an 8%-13% growth over 2025 [12][13] Business Line Data and Key Metrics Changes - Crysvita contributed $481 million in revenue, with a 17% growth over 2024 [11] - Dojolvi generated $96 million, representing a 9% growth over 2024 [11] - Evkeeza saw significant growth, contributing $59 million, which is an 84% increase over 2024 [11] - Mepsevii contributed $37 million, continuing to treat patients in an ultra-rare indication [11] Market Data and Key Metrics Changes - The commercial business delivered a significant 20% year-over-year growth in 2025, with treatments reaching over 35 countries [8] - In Latin America, Crysvita's business is anchored in Brazil and Argentina, with solid reimbursement growth in Mexico and Colombia [16][17] - Dojolvi has seen continuous growth in EMEA, with regulatory wins in Kuwait and the U.K. [18] Company Strategy and Development Direction - The company aims for profitability by 2027, implementing a strategic restructuring plan to reduce operating expenses and align resources with high-impact opportunities [9][10] - The plan includes a 10% workforce reduction, impacting approximately 130 employees [10] - The company is focused on launching three additional treatments over the next two years while continuing to grow its base business of four commercial products [10][24] Management's Comments on Operating Environment and Future Outlook - Management highlighted 2026 as a significant year with potential approvals in MPS IIIA and glycogen storage disease type Ia, along with pivotal data readout in Angelman syndrome [4] - The management expressed confidence in the ability to deliver the next phase of growth required to reach profitability [20] - The company is addressing the FDA's incomplete response letter regarding UX111 and is working on resubmitting the BLA with additional documentation [7][21] Other Important Information - The company has a strong commercial infrastructure and experienced team to execute complex rare disease therapies globally [20] - The strategic restructuring is expected to enable the company to diversify its pipeline beyond gene therapy [54] Q&A Session Summary Question: What was the decision behind using cognition as the primary endpoint for the Angelman study? - The decision was based on the belief that cognition is fundamental and intertwined with communication, which takes more time to develop [27] Question: Can you provide insights on the patient baseline profile for the Angelman study? - The baseline data from the phase II trial is reflective of the phase III program, and the company is comfortable with the comparability [33] Question: How does the company plan to achieve profitability in 2027? - The pathway to profitability includes continued growth from current products and a reduction in combined R&D and SG&A expenses [40][42] Question: What is the timeline for the resubmission of the BLA in response to the IRL? - The resubmission is expected to take a couple of weeks for the FDA to determine if all required documents are included, with a PDUFA date set approximately six months after resubmission [72] Question: What is the expected launch trajectory for GSDIa? - The market for GSDIa is expected to develop steadily, with strong demand anticipated, but not as urgent as MPS IIIA [76]

Financial Data and Key Metrics Changes - For 2025, the company reported total revenue of $673 million, representing a 20% growth over 2024, exceeding the upper end of guidance [11] - The net loss for the year was $575 million, or $5.83 per share, with cash, cash equivalents, and marketable securities totaling $738 million as of December 31 [12] - Guidance for 2026 expects total revenue between $730 million and $760 million, reflecting an 8%-13% growth over 2025 [12][13] Business Line Data and Key Metrics Changes - Crysvita contributed $481 million in revenue, with a 17% growth over 2024, while Dojolvi generated $96 million, representing a 9% growth [11] - Evkeeza saw significant growth of 84% over 2024, contributing $59 million, and Mepsevii contributed $37 million [11] - The company anticipates Crysvita revenue in 2026 to be between $500 million and $520 million, with Dojolvi expected to generate between $100 million and $110 million [13] Market Data and Key Metrics Changes - The commercial business delivered a significant 20% year-over-year growth in 2025, with treatments now available in over 35 countries [8] - In Latin America, Crysvita's business is anchored in Brazil and Argentina, with solid reimbursement growth in Mexico and Colombia [17] - Dojolvi continues to grow steadily in the U.S. and EMEA, with recent regulatory wins in Kuwait and the U.K. [18] Company Strategy and Development Direction - The company is focused on achieving profitability by 2027 through a strategic restructuring plan that includes a 10% workforce reduction and realignment of resources towards high-impact opportunities [9][10] - The company aims to launch three additional treatments over the next two years while continuing to grow its existing commercial products [10][24] - The strategic restructuring will allow the company to maintain a diversified pipeline, not solely focused on gene therapy [54] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the upcoming year, highlighting key inflection points with potential approvals in MPS IIIA and glycogen storage disease type Ia, as well as pivotal data readouts in Angelman syndrome [4][20] - The management acknowledged the challenges posed by the FDA's incomplete response letter regarding UX111 but emphasized their commitment to providing the necessary documentation for resubmission [7][52] - The company remains optimistic about its ability to deliver meaningful growth and reach profitability, supported by a strong commercial infrastructure and ongoing product launches [20][42] Other Important Information - The company has implemented a strategic restructuring plan to reduce operating expenses and align resources with high-impact opportunities, aiming for profitability in 2027 [9][10] - The company expects R&D and SG&A expenses to decrease significantly in 2027, driven by the completion of clinical studies and reduced early-stage research efforts [15] Q&A Session Summary Question: Can you explain the choice of cognition as the primary endpoint for the Angelman study? - The decision was based on the fundamental nature of cognition and its interrelation with communication, with a focus on a broader assessment through the Multidomain Responder Index [27][28] Question: What is the baseline profile of patients in the Angelman study? - The baseline data from the phase 2 trial is reflective of the phase 3 program, and the company is comfortable with the comparability of the cohorts [33] Question: How does the company plan to achieve profitability in 2027? - The pathway to profitability includes continued growth from existing products, cost reductions, and contributions from upcoming launches [38][40] Question: What is the status of the DTX-301 program? - The DTX-301 program is ongoing, with data expected to be released this year [49] Question: Can you provide an update on the UX111 program and the IRL received? - The company is preparing to provide comprehensive documentation to address the IRL issues and is committed to resubmitting the BLA [52][53]

Financial Data and Key Metrics Changes - For 2025, the company reported total revenue of $673 million, representing a 20% growth over 2024, exceeding the upper end of guidance [10] - The net loss for the year was $575 million, or $5.83 per share, with cash, cash equivalents, and marketable securities totaling $738 million as of December 31 [11] Business Line Data and Key Metrics Changes - Crysvita contributed $481 million, with a 17% growth over 2024, exceeding guidance [10] - Dojolvi generated $96 million, reflecting a 9% growth over 2024 [10] - Evkeeza saw significant growth, contributing $59 million, representing an 84% increase over 2024 [10] - Mepsevii contributed $37 million, continuing to treat patients in an ultra-rare indication [10] Market Data and Key Metrics Changes - The commercial business delivered a significant 20% year-over-year growth in 2025, with treatments reaching over 35 countries [6] - The company anticipates total revenue in 2026 to be between $730 million and $760 million, representing an 8%-13% growth over 2025 [11][12] Company Strategy and Development Direction - The company is focused on achieving profitability by 2027 through a strategic restructuring plan that includes a 10% workforce reduction and realignment of resources towards high-impact opportunities [7][9] - The company aims to launch three additional treatments over the next two years while continuing to grow its existing commercial products [9][22] Management's Comments on Operating Environment and Future Outlook - Management highlighted 2026 as a significant year with potential approvals in key programs and pivotal data readouts [3] - The company is addressing the FDA's incomplete response letter regarding UX111 and is working to provide additional documentation for resubmission [5][20] - Management expressed confidence in the ability to deliver the next phase of growth required to reach profitability [19] Other Important Information - The company is implementing a strategic restructuring plan to reduce operating expenses while advancing its product pipeline [7][9] - The company expects combined R&D and SG&A expenses to be flat to down low single digits in 2026 compared to 2025 [12] Q&A Session Summary Question: Regarding the primary endpoint for the phase 3 Angelman study - The decision to use cognition over expressive communication was based on its fundamental importance and the complexities of communication development [24][25] Question: Can you provide insights on the patient baseline profile for the phase 3 study? - The baseline data from the phase 3 program is comparable to the expansion trial, providing confidence in the study's design [29][30] Question: How does the company plan to achieve profitability in 2027? - The pathway to profitability includes continued growth from current products and cost reductions, with expectations for combined R&D and SG&A expenses to decrease significantly by 2027 [35][36] Question: Can you clarify the timeline for the IRL resubmission? - The resubmission timeline is similar to the original submission, with a PDUFA date expected approximately six months after resubmission [68][69] Question: What is the expected launch trajectory for DTX-401? - The launch is expected to develop steadily, with strong demand anticipated, but not an immediate steep uptake [72]

Corporate Presentation February 2026 Confidential and Proprietary Forward looking statements Cautionary note regarding forward-looking statements: This presentation contains forward-looking statements, including, but not limited to, statements regarding our expectations, estimates, assumptions, and projections regarding our future operating results and financial performance, including our expectations for profitability in 2027, anticipated cost or expense management, including the company's expectations rel ...

Core Insights - Ultragenyx Pharmaceutical (RARE) has resubmitted its biologics license application (BLA) to the FDA for accelerated approval of its gene therapy candidate UX111, aimed at treating Sanfilippo syndrome type A (MPS IIIA) [1][8] - The company’s shares have decreased by 44.6% over the past year, contrasting with a 15.2% increase in the industry [2] BLA Resubmission Details - The FDA issued a Complete Response Letter (CRL) in July 2025, requesting additional information regarding chemistry, manufacturing, and controls (CMC) elements, which were facility- and process-related issues not tied to product quality [3][10] - The resubmitted BLA addresses all CMC observations from the CRL and includes long-term data supporting neurological benefits, along with biomarker data in line with FDA agreements [4][11] Regulatory Timeline - A target action date from the FDA is expected within a month, with a review period of up to six months anticipated, aiming for a decision in the third quarter of 2026 [5][8] Clinical Data and Efficacy - The original BLA submission was supported by data from the phase I/II/III Transpher A study, which showed that UX111 treatment led to a significant reduction in heparan sulfate (HS) levels in cerebrospinal fluid (CSF) and improved long-term cognitive development [9][11] - The updated clinical data in the resubmission includes an additional year of patient follow-up, demonstrating durable treatment benefits and increasing separation from untreated outcomes [11] Disease Context - Sanfilippo syndrome type A is a rare, fatal lysosomal storage disorder affecting the central nervous system, with approximately 3,000 to 5,000 patients in commercially accessible areas and a median life expectancy of 15 years [14]