On August 5, 2025 Day One Biopharmaceuticals, Inc. (Nasdaq: DAWN) ("Day One" or the "Company"), a biopharmaceutical company dedicated to developing and commercializing targeted therapies for people of all ages with life-threatening diseases, reported its second quarter 2025 financial results and highlighted recent corporate achievements (Press release, Day One, AUG 5, 2025, View Source [SID1234654784]).

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"We have strong momentum going into the second half of 2025. We continue to focus on our three core priorities: accelerating revenue growth with OJEMDA, advancing our pipeline, and pursuing value-driving portfolio expansion anchored in financial discipline," said Jeremy Bender, Ph.D., chief executive officer of Day One. "With strong execution across the organization and a solid financial foundation, we’re building a company that aims to deliver meaningful value to patients and to shareholders."

OJEMDA Commercial Performance

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OJEMDA net product revenue was $33.6 million in the second quarter of 2025, an increase of 310% from the second quarter of 2024.

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U.S. OJEMDA net product revenue increased 10% from the first quarter of 2025.

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OJEMDA prescriptions exceeded 1,000 in the second quarter of 2025, representing a 15% increase compared to the first quarter of 2025 and a 346% increase compared to the second quarter of 2024.

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Achieved $113.1 million in OJEMDA net product revenue for the most recent 12-month period ended June 30, 2025.

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The Company is providing 2025 net product revenue guidance of $140 to $150 million.

Program Highlights

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DAY301, the Company’s PTK7-targeted ADC, is actively enrolling patients in the Phase 1a portion of the Phase 1a/b clinical trial; the trial is progressing as planned.

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Day One expects to present 3-year follow-up data from the FIREFLY-1 clinical trial in the fourth quarter of 2025.

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Day One published additional data characterizing growth velocity recovery and effective rash management at the 2025 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting.

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Abstract 10029: Growth recovery in patients with BRAF-altered pediatric low-grade gliomas (pLGGs) after discontinuation of tovorafenib
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Abstract 10037: Post hoc analysis of rashes reported in patients with BRAF-altered relapsed/refractory pediatric low-grade glioma treated with the type II RAF inhibitor tovorafenib in FIREFLY-1

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Patient enrollment in the pivotal Phase 3 FIREFLY-2 clinical trial is on track to achieve completion of trial enrollment in the first half of 2026.

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Day One terminated its research collaboration and license agreement with Sprint Bioscience AB following careful consideration of the current development status for the VRK1 program and the Company’s overall strategic objectives.

Corporate Highlights

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Industry leader Michael Vasconcelles, M.D., joined Day One in June 2025 as Head of Research and Development. Dr. Vasconcelles brings more than 25 years of extensive oncology research and development experience to the Company, most recently as Executive Vice President and Head of Research, Development and Medical Affairs at ImmunoGen.

Second Quarter 2025 Financial Highlights

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Product Revenue, Net: OJEMDA net product revenue was $33.6 million for the second quarter of 2025 compared to $8.2 million for the second quarter of 2024.

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License Revenue: License revenue from the sale of ex-U.S. commercial rights for tovorafenib was $0.3 million for the second quarter of 2025.

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R&D Expenses: Research and development expenses were $36.1 million for the second quarter of 2025 compared to $92.1 million for the second quarter of 2024. The decrease was primarily due to the MabCare Therapeutics license agreement upfront payment of $55.0 million in the second quarter of 2024.

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SG&A Expenses: Selling, general and administrative expenses were $29.0 million for the second quarter of 2025 compared to $30.2 million for the second quarter of 2024. The decrease was primarily due to lower employee compensation costs.

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Net Loss: Net loss totaled $30.3 million for the second quarter of 2025 with non-cash stock-based compensation expense of $10.9 million, compared to a net loss of $4.4 million for the second quarter of 2024, with non-cash stock-based compensation expense of $13.0 million and gain from sale of priority voucher of $108.0 million.

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Cash Position: The Company’s cash, cash equivalents and short-term investments totaled $453.1 million as of June 30, 2025.

Conference Call

Day One will host a conference call and webcast today, August 5 at 4:30 p.m. ET. To access the live conference call by phone, dial 877-704-4453 (domestic) or 201-389-0920 (international), and provide the access code 13745150. Live audio webcast will be accessible from the Day One Media & Investors page. To ensure a timely connection to the webcast, it is recommended that participants register at least 15 minutes prior to the scheduled start time. An archived version of the webcast will be available for replay on the Events section of the Day One Investors & Media page for 30 days following the event.

About OJEMDA

OJEMDA (tovorafenib) is a Type II RAF kinase inhibitor of mutant BRAF V600, wild-type BRAF, and wild-type CRAF kinases.

OJEMDA is indicated for the treatment of patients 6 months of age and older with relapsed or refractory pediatric low-grade glioma (LGG) harboring a BRAF fusion or rearrangement, or BRAF V600 mutation. This indication is approved under accelerated approval based on response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s).

Tovorafenib was granted Breakthrough Therapy and Rare Pediatric Disease designations by the FDA for the treatment of patients with pLGG harboring an activating RAF alteration, and it was evaluated by the FDA under priority review. Tovorafenib has also received Orphan Drug designation from the FDA for the treatment of malignant glioma and from the European Commission for the treatment of glioma.

For more information, please visit www.ojemda.com.

On August 5, 2025 Terns Pharmaceuticals, Inc. (Terns or the Company) (Nasdaq: TERN), a clinical-stage biopharmaceutical company developing a portfolio of small-molecule product candidates to address serious diseases, including oncology and obesity, reported financial results for the second quarter ended June 30, 2025, and provided corporate updates (Press release, Terns Pharmaceuticals, AUG 5, 2025, View Source [SID1234654800]).

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"The Terns team continues to advance our clinical programs with strong momentum, a clear focus on execution and a strong balance sheet," said Amy Burroughs, chief executive officer of Terns. "We are on track for two key clinical readouts in CML and obesity by year-end. The fourth quarter data readout from the Phase 1 CARDINAL trial in 2L+ CML will enable comparison of the efficacy and safety results of TERN-701 with data from other Phase 1 CML trials, including asciminib’s."

"We are focusing the company in oncology and on rapidly advancing TERN-701 towards a pivotal trial, with the goal of ultimately bringing a potential best-in-class therapy to people living with CML. The company seeks to partner our portfolio of potentially best-in-class metabolic assets and does not plan to invest in clinical development in metabolic disease beyond year end 2025."

"We are encouraged by the rapid enrollment in the CARDINAL trial of TERN-701 in CML and initiation of dose expansion at the high end of the dose range based on the safety and efficacy data to date. The recently presented preclinical data at the European Hematology Association (EHA) (Free EHA Whitepaper) Congress (EHA) (Free EHA Whitepaper) further supports TERN-701’s enhanced potency compared to asciminib across multiple clinically relevant BCR-ABL variants, including those with resistance mutations. These findings build upon previously reported data from the early dose escalation portion of the CARDINAL trial, which showed compelling molecular responses observed in heavily pre-treated patients, including those with treatment failure to asciminib. We look forward to sharing a CARDINAL data set in the fourth quarter that will provide a read through to the primary endpoint in a registrational trial – the achievement of a major molecular response at six months," concluded Ms. Burroughs.

Recent Pipeline Developments and Anticipated Milestones

TERN-701: Oral, small-molecule next-generation allosteric BCR-ABL inhibitor for CML

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Terns plans to report efficacy and safety data from the Phase 1 CARDINAL trial in the fourth quarter of 2025, including 6-month MMR achievement rate, and to inform the potential for a best-in-class product profile and path to a pivotal trial
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In April 2025, Terns enrolled the first patient in the dose expansion portion of the CARDINAL trial in which patients are randomized to one of two dose cohorts (320 mg or 500 mg QD) with up to 40 patients per arm
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Doses were selected based on the totality of safety, efficacy, and pharmacokinetic/pharmacodynamic data from the dose escalation portion of the trial
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Terns to host an educational webinar in September 2025 detailing the unmet need in CML, how TERN-701 is building a potential best-in-class profile and relevant benchmarks for Phase 1 data. Webcast details will be available prior to the event
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Early interim data released in December 2024 from the TERN-701 dose escalation portion of the CARDINAL trial showed:
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Compelling molecular responses in heavily pre-treated CML patients with high baseline BCR-ABL transcript levels, starting at the lowest doses
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Encouraging safety profile with no dose limiting toxicities, adverse event-related treatment discontinuations or dose reductions at any dose
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In addition, supportive preclinical data presented at EHA (Free EHA Whitepaper) 2025 highlighted greater potency of TERN-701 compared to asciminib against several resistance mutations in the active-site and allosteric domains

TERN-601: Oral, small-molecule glucagon-like peptide-1 receptor agonist (GLP1-RA) for obesity

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Key objectives of the Phase 2 FALCON trial in patients with obesity or overweight are to demonstrate competitive weight loss at 12-weeks, a class-leading safety/tolerability profile, and the simplest dose titration among GLP1-RA therapies
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The Phase 2 FALCON trial enrollment completed in the second quarter of 2025 and top-line 12-week data is expected in the early fourth quarter of 2025
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U.S.-based, multicenter, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of TERN-601 as a treatment for obesity
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Once-daily dosing with or without food in adults with obesity or overweight, without diabetes (BMI ranges from ≥30 to <50 kg/m2 or ≥27 to <30 kg/m2 with at least one weight-related comorbidity)
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Patients randomized to one of four active cohorts (n=30 per cohort): 250 mg, 500 mg, 500 mg slow titration, 750 mg or placebo
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Primary endpoint is percent change from baseline in body weight compared to placebo over 12 weeks
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Secondary endpoints include safety, tolerability and proportion of patients achieving 5% weight loss or greater
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Doses and titration schema for Phase 2 were selected based on positive results from the Phase 1 trial, announced in September 2024, which demonstrated weight loss over 28-days up to 5.5% and favorable safety and tolerability despite rapid dose titration every three days
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In June 2025, Terns presented additional data from the completed 28-day Phase 1 trial of TERN-601 for obesity at the 85th Annual American Diabetes Association Scientific Sessions, which further demonstrated its differentiated profile among oral GLP1-RAs

Pipeline and Partnering Programs

TERN-800 Series: Oral, small-molecule glucose-dependent insulinotropic polypeptide receptor (GIPR) modulators

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Terns is prioritizing its discovery efforts on nominating a GIPR antagonist development candidate based on in-house discoveries and growing scientific rationale supporting the potential of GLP-1 agonist/GIPR antagonist combinations for obesity. Terns is seeking a strategic partner to advance this program

TERN-501: Oral, thyroid hormone receptor-beta (THR-β) agonist

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Based on non-clinical studies, THR-β is a complementary mechanism to GLP-1, potentially providing broader metabolic and liver benefits in addition to increased weight loss. Terns is seeking a strategic partner to advance this program

Corporate Updates

Members of the Terns’ senior leadership team will participate in the Morgan Stanley 23rd Annual Global Healthcare Conference, taking place in New York City, New York, September 8-10th, 2025.

Webcasts can be accessed at Terns’ IR website: View Source

Second Quarter 2025 Financial Results

Cash Position: As of June 30, 2025, cash, cash equivalents and marketable securities were $315.4 million, as compared with $358.2 million as of December 31, 2024. Based on its current operating plan, Terns expects these funds will be sufficient to support its planned operating expenses into 2028

Research and Development (R&D) Expenses: R&D expenses were $20.4 million for the quarter ended June 30, 2025, as compared with $18.4 million for the quarter ended June 30, 2024

General and Administrative (G&A) Expenses: G&A expenses were $7.0 million for the quarter ended June 30, 2025, as compared with $7.2 million for the quarter ended June 30, 2024

Net Loss: Net loss was $24.1 million for the quarter ended June 30, 2025, as compared with $22.7 million for the quarter ended June 30, 2024

Cogent Biosciences has filed a 10-Q – Quarterly report [Sections 13 or 15(d)] with the U.S. Securities and Exchange Commission .

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On August 5, 2025 Foghorn Therapeutics Inc. (Nasdaq: FHTX), a clinical-stage biotechnology company pioneering a new class of medicines that treat serious diseases by correcting abnormal gene expression, reported a financial and corporate update in conjunction with the Company’s 10-Q filing for the quarter ended June 30, 2025 (Press release, Foghorn Therapeutics, AUG 5, 2025, View Source [SID1234654785]). With an initial focus in oncology, Foghorn’s Gene Traffic Control Platform and resulting broad pipeline have the potential to transform the lives of people suffering from a wide spectrum of diseases.

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"We continue to make meaningful progress advancing our pipeline to treat a wide range of cancers," said Adrian Gottschalk, President and Chief Executive Officer of Foghorn. "The FHD-909 dose escalation trial, which is part of our strategic collaboration with Lilly, is enrolling well and remains on track. Additionally, preclinical synergistic activity of FHD-909 in combination with KRAS inhibitors and pembrolizumab supports clinical exploration of FHD-909 in difficult-to-treat NSCLC."

Mr. Gottschalk continued, "Our wholly owned selective degrader programs targeting CBP, EP300 and ARID1B, continue to advance with strong momentum. Our Selective CBP degrader has shown encouraging activity in ER+ breast cancer with potential beyond EP300-mutant tumors, and we are targeting an IND in 2026. Additionally, we anticipate program updates in the fourth quarter of 2025 for both our Selective EP300 degrader, which has shown robust anti-tumor activity across a range of hematologic malignancies, and our Selective ARID1B degrader, which has achieved selective targeted degradation. Backed by a strong balance sheet and a cash runway into 2028, we are well positioned to further advance our differentiated programs."

Program Overview and Upcoming Milestones

FHD-909 (LY4050784). FHD-909 is a first-in-class oral SMARCA2 selective inhibitor that has demonstrated in preclinical studies to have high selectivity over its closely related paralog SMARCA4, two proteins that are the catalytic engines across all forms of the BAF complex. Selectively blocking SMARCA2 activity is a promising synthetic lethal strategy intended to induce tumor death while sparing healthy cells. SMARCA4 is mutated in up to 10% of NSCLC alone and implicated in a significant number of solid tumors.

•Phase 1 trial enrolling well and remains on track. Enrollment in the first-in-human Phase 1 multi-center trial of FHD-909 is progressing well. The trial in patients with NSCLC as the primary target population is on track, following the dosing of the first patient in October 2024.
◦At the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting in April 2025, Lilly presented, on behalf of the collaboration, the clinical study design poster for the Phase 1 trial evaluating FHD-909 in patients with SMARCA4 mutated locally advanced or metastatic solid tumors who have exhausted standard treatment options. The primary target population is NSCLC.

•Synergistic preclinical data of FHD-909 in combination with pembrolizumab and KRAS inhibitors. Preclinical data presented at AACR (Free AACR Whitepaper) demonstrates enhanced anti-tumor activity of FHD-909 in combination with standard-of-care (SoC) chemotherapies, anti-PD-1 pembrolizumab and several novel KRAS inhibitors in NSCLC animal models. The combination data will inform further development plans of FHD-909.

Ongoing strategic collaboration with Lilly. Foghorn is collaborating with Lilly to develop novel oncology medicines, including a U.S. 50/50 U.S. co-development and co-commercialization agreement for its selective SMARCA2 oncology program that includes both a selective inhibitor and a selective degrader, as well as an additional undisclosed oncology target. The collaboration also includes three discovery programs from Foghorn’s proprietary Gene Traffic Control platform.

Selective CBP degrader program. Foghorn’s Selective CBP degrader selectively targets CBP in EP300-mutated cancer cells, which are found in various cancer types, including bladder, gastric, and endometrial cancers. CBP and EP300 are closely related acetyltransferases, and when EP300 is mutated, this creates a synthetic lethal relationship that the therapy exploits. Attempts to selectively drug CBP have been challenging due to the high level of similarity between the two proteins, while dual inhibition of CBP/EP300 has been associated with dose-limiting toxicities.
•Presented preclinical combination data with Selective CBP degrader in ER+ breast cancer. In April 2025, preclinical data showing Selective CBP degraders have combination benefit with approved chemotherapies and targeted agents in solid tumors beyond EP300-mutant cancers was presented as a poster at the AACR (Free AACR Whitepaper) Annual Meeting.
•Synergistic combination activity demonstrated including with paclitaxel and CDK4/6 inhibitor abemaciclib in ER+ breast cancer.

•Findings support combination opportunities for selective CBP degraders in solid tumors beyond EP300-mutant cancers.
•On track for IND-enabling studies, targeting an IND in 2026.
Selective EP300 degrader program. Foghorn is developing a Selective EP300 degrader for the treatment of hematological malignancies and prostate cancer. Attempts to selectively drug EP300 have been challenging due to the high level of similarity between EP300 and CBP, while dual inhibition of CBP/EP300 has been associated with dose limiting toxicities. EP300 lineage dependencies are established in diffuse large b-cell lymphoma (DLBCL) and multiple myeloma (MM).

•Presented preclinical data showing combination with DLBCL and MM SoC in April 2025.
•Anti-tumor activity in a broad range of hematological malignancies in vitro, including DLBCL, MM, and follicular lymphoma.
•Combination of EP300 degrader with SoC in both DLBCL and MM are highly synergistic in vitro.
•Selective EP300 degradation is effective in IMiD-resistant MM cell lines.
•Program update expected in Q4 2025.

Selective ARID1B degrader program. Foghorn’s Selective ARID1B degrader selectively targets and degrades ARID1B in ARID1A-mutated cancers. ARID1A is the most mutated subunit in the BAF complex and amongst the most mutated proteins in cancer. These mutations lead to a dependency on ARID1B in several types of cancer, including ovarian, endometrial, colorectal, and bladder. Attempts to selectively drug ARID1B have been challenging because of the high degree of similarity between ARID1A and ARID1B and the fact that ARID1B has no enzymatic activity to target. ARID1B is a major synthetic lethal target implicated in up to 5% of all solid tumors.

•Developed highly potent and selective binders. Preclinical data demonstrated potent and selective small molecule binders to ARID1B.
•Selective degradation of ARID1B achieved. Foghorn has successfully selectively degraded ARID1B.
•Program update expected in Q4 2025.

Chromatin Biology and Degrader Platform. Foghorn continues to advance its chromatin biology and degrader platform with investments in novel ligases, long-acting injectables, oral delivery, and induced proximity.

Second Quarter 2025 Financial Highlights

•Collaboration Revenue. Collaboration revenue was $7.6 million for the three months ended June 30, 2025, compared to $6.9 million for the three months ended June 30, 2024. The increase was driven by the continued advancement of programs under the Lilly Collaboration Agreement.

•Research and Development Expenses. Research and development expenses were $21.8 million for the three months ended June 30, 2025, compared to $23.8 million for the three months ended June 30, 2024. The decrease is attributed to a decrease in FHD-286 costs, decreases in personnel-related costs, early development and other research external costs and facilities and IT-related expenses, partially offset by an increase in Lilly-partnered programs.

•General and Administrative Expenses. General and administrative expenses were $6.9 million for the three months ended June 30, 2025, compared to $7.3 million for the three months ended June 30, 2024. This decrease was primarily due to lower consulting costs and lower facilities and IT related expenses.

•Net Loss. Net loss was $17.9 million for the three months ended June 30, 2025, compared to a net loss of $23.0 million for the three months ended June 30, 2024.

•Cash, Cash Equivalents, and Marketable Securities. As of June 30, 2025, the Company had $198.7 million in cash, cash equivalents, and marketable securities, providing cash runway into 2028.

About FHD-909
FHD-909 (LY4050784) is a potent, first-in-class, allosteric, and orally available small molecule that selectively inhibits the ATPase activity of SMARCA2 (BRM) over its closely related paralog SMARCA4 (BRG1), two proteins that are the catalytic engines across all forms of the BAF complex, one of the key regulators of the chromatin regulatory system. In preclinical studies, tumors with mutations in SMARCA4 rely on SMARCA2 for their survival. FHD-909 has shown significant anti-tumor activity across multiple SMARCA4-mutant lung tumor models.

On August 5, 2025 Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE), a biopharmaceutical company focused on the development and commercialization of novel therapies for serious rare and ultra-rare genetic diseases, reported its financial results for the quarter ended June 30, 2025 (Press release, Ultragenyx Pharmaceutical, AUG 5, 2025, View Source [SID1234654801]).

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"In the first half of the year, we delivered 20% revenue growth from our commercial therapies versus the prior year. We are continuing along our path to profitability in 2027, as we drive our top line growth and maintain our fiscal discipline," said Emil D. Kakkis, M.D., Ph.D., chief executive officer and president of Ultragenyx. "We are excited for the potential of UX143 in osteogenesis imperfecta to reduce fractures and meaningfully improve patients’ bone health and for GTX-102 in Angelman syndrome to transform the lives of patients and their families affected by this neurodevelopment disease."

Second Quarter 2025 Selected Financial Data Tables and Financial Results

Revenues (dollars in thousands), (unaudited)

Three Months Ended June 30, Six Months Ended June 30,
2025 2024 2025 2024
Crysvita
Product sales – Latin America and Türkiye $ 34,727 $ 40,449 $ 89,807 $ 76,690
Royalty revenue – U.S. and Canada 79,083 67,045 119,936 107,447
Royalty revenue – Europe 6,596 6,176 13,528 12,118
Total Crysvita Revenue 120,406 113,670 223,271 196,255
Dojolvi 23,207 19,355 40,216 35,717
Evkeeza 14,573 7,856 25,604 11,131
Mepsevii 8,310 6,145 16,697 12,756
Total revenues $ 166,496 $ 147,026 $ 305,788 $ 255,859

Total Revenues
Ultragenyx reported $166 million in total revenue for the second quarter of 2025, which represents 13% growth compared to the same period in 2024. Second quarter 2025 Crysvita revenue was $120 million, which includes product sales of $35 million from Latin America and Türkiye. Dojolvi revenue in the second quarter 2025 was $23 million. Evkeeza revenue in the second quarter 2025 was $15 million as we continue to launch in the Ultragenyx territories outside of the United States.

Selected Financial Data (dollars in thousands, except per share amounts), (unaudited)

Three Months Ended June 30, Six Months Ended June 30,
2025 2024 2025 2024
Total revenues $ 166,496 $ 147,026 $ 305,788 $ 255,859
Operating expenses:
Cost of sales 23,002 21,280 51,664 38,813
Research and development 164,736 161,503 330,508 339,990
Selling, general and administrative 86,646 80,604 174,443 158,764
Total operating expenses 274,384 263,387 556,615 537,567
Net loss $ (114,951 ) $ (131,598 ) $ (266,031 ) $ (302,282 )
Net loss per share, basic and diluted $ (1.17 ) $ (1.52 ) $ (2.73 ) $ (3.54 )

Operating Expenses

Total operating expenses for the second quarter of 2025 were $274 million, including non-cash stock-based compensation of $39 million.

Net Loss
For the second quarter of 2025, Ultragenyx reported net loss of $115 million, or $1.17 per share basic and diluted, compared with a net loss for the second quarter of 2024 of $132 million, or $1.52 per share basic and diluted.

Cash Balance and Net Cash Used in Operations
Cash, cash equivalents, and marketable debt securities were $539 million as of June 30, 2025, which includes $80 million of net proceeds raised through the At-The-Market (ATM) facility. For the three months ended June 30, 2025, net cash used in operations was $108 million and for the six months ended June 30, 2025 was $275 million.

2025 Financial Guidance
Ultragenyx reaffirmed its revenue guidance for 2025. Total revenues are expected to grow approximately 14-20% compared to 2024. Net cash used in operations is now expected to modestly increase compared to 2024, related to timing delays and changes for UX111, DTX401, and UX143 impacting receipts and payments. The company reaffirms its path to GAAP profitability in 2027 and plans to continue to focus on growing revenues and prioritizing its spend, including stopping and delaying certain expenses prior to upcoming potential commercial launches.

Reaffirm for the full year 2025:

Total revenue to be in the range of $640 million to $670 million
Crysvita revenue to be in the range of $460 million to $480 million
Dojolvi revenue to be in the range of $90 million to $100 million

Recent Updates and Clinical Milestones

UX143 (setrusumab) monoclonal antibody for osteogenesis imperfecta (OI): Final analysis for Phase 3 Orbit and Cosmic studies around the end of 2025

The Phase 3 Orbit and Cosmic studies, which evaluate setrusumab in pediatric and young adult patients with OI, are progressing towards their final analyses around the end of 2025. The randomized, placebo-controlled Phase 3 portion of the Orbit study was evaluated by the Data Monitoring Committee at an interim analysis in July 2025 and they informed the company that UX143 demonstrated an acceptable safety profile and that the study should continue to the final analysis. Conduct of the study is going well and patient safety in the Phase 3 is consistent with the Phase 2.

Data from the Cosmic study were not analyzed at the interim timepoint, consistent with the statistical analysis plan. Study conduct is going well and safety in this younger patient population is consistent with the safety profile in the other studies.

Patients will continue dosing in the ongoing Phase 3 Orbit and Cosmic clinical studies with the final analyses to be conducted after patients have been on therapy for at least 18-months. The threshold for the Phase 3 Orbit final analysis is p<0.04 and for the Phase 3 Cosmic final analysis is p<0.05.

GTX-102 an antisense oligonucleotide for Angelman syndrome: Phase 3 study fully enrolled; Phase 3 data expected in the second half of 2026

In June 2025, Breakthrough Therapy Designation (BTD) was granted by the FDA for GTX-102 as a treatment for Angelman syndrome. The FDA’s decision was based on preliminary clinical evidence including positive data from the Phase 1/2 study in 74 patients (4-17 years of age) with a full maternal UBE3A gene deletion, that showed participants have made consistent developmental gains with rapid, sustained and continuing improvements across multiple symptom domains when treated for up to 3 years. BTD aims to expedite the development and review of drugs that are intended to treat serious or life-threatening diseases and whose preliminary clinical evidence indicates that the drug may demonstrate substantial improvement on one or more clinically significant endpoints over existing therapies.

In July 2025, enrollment of the global Phase 3 Aspire study was completed, ahead of plan due to patient and investigator interest, with 129 patients screened and randomized across 28 global sites. Participants are randomized 1:1 to receive GTX-102 by intrathecal injection via lumbar puncture or to the sham comparator group during the 48-week primary efficacy analysis period. The primary endpoint is improvement in cognition assessed by Bayley-4 cognitive raw score, and the key secondary endpoint (with a 10% allocation of alpha) is the Multi-domain Responder Index (MDRI) across the five domains of cognition, receptive communication, behavior, gross motor function, and sleep. Data from this study are expected in the second half of 2026.

The Phase 2/3 Aurora study, which will evaluate GTX-102 in other Angelman syndrome genotypes and ages, is expected to initiate in the second half of 2025.

UX111 AAV gene therapy for Sanfilippo syndrome type A (MPS IIIA): Working with FDA to resolve observations from Complete Response Letter (CRL)

In July 2025, the FDA issued a CRL for the Biologics License Application (BLA) for UX111 requesting additional information and improvements related to specific aspects of chemistry, manufacturing and controls (CMC) procedures and validation as well as observations from the recently completed manufacturing facility inspections. The company believes the observations are readily addressable and many have been addressed. The company will work with the FDA through a Type A meeting to agree on the planned resolution of the observations. Once agreement on the contents of a filing have been reached, the company expects to resubmit the BLA and anticipates up to a 6-month review period to follow the resubmission.

Clinical review had been ongoing and the FDA has acknowledged that the neurodevelopmental outcome data provided to date are robust and the biomarker data provide additional supportive evidence. The CRL did not note any review issues related to the clinical data package nor clinical inspections and specified that updated clinical data for particular endpoints from the current patients be included in the resubmission.

DTX401 AAV gene therapy for Glycogen Storage Disease Type Ia (GSDIa): BLA submission expected in the fourth quarter of 2025

A BLA for DTX401 for the treatment of GSDIa is planned to be submitted in the fourth quarter of 2025. The BLA will include data from the randomized, placebo controlled Phase 3 study and the previously disclosed 96-week data that demonstrated patients had even greater reductions in total daily cornstarch at their last visit compared to baseline in both the ongoing DTX401 group (-60%) and the Crossover Placebo to DTX401 group (-64%) when compared to the 48-week data. It will also include updates to proactively respond to related FDA observations identified in the UX111 CRL in the CMC section and at the company’s gene therapy manufacturing facilities.

UX701 AAV gene therapy for Wilson Disease: Phase 1/2/3 study ongoing; Cohort 4 enrollment ongoing, completion expected in second half of 2025

Enrollment is ongoing in the fourth cohort evaluating a 4.0e13 GC/kg dose in the ongoing, dose-finding, stage of the pivotal Cyprus2+ study of UX701 for the treatment of Wilson disease. The company is on track to enroll five patients in Cohort 4 who will receive immunomodulation therapy with rituximab and tacrolimus, in addition to the prophylactic oral corticosteroid regimen patients in Cohorts 1 through 3 received, prior to being dosed with UX701. Enrollment in Cohort 4 is expected to complete in the second half of 2025.

Conference Call and Webcast Information

Ultragenyx will host a conference call today, Tuesday, August 5, 2025, at 2 p.m. PT/5 p.m. ET to discuss the second quarter 2025 financial results and provide a corporate update. The live and replayed webcast of the call will be available through the company’s website at View Source The replay of the call will be available for three months.