Denali Therapeutics Announces Key Milestones and Priorities for 2026
Denali Therapeutics announced key anticipated milestones and priorities for 2026 across its portfolio of investigational therapies for neurodegenerative diseases, lysosomal storage disorders and other serious diseases. 2026 Outlook: Denali is preparing for commercial launch in anticipation of a regulatory decision on the Biologics License Application for tividenofusp alfa under the U.S. Food and Drug Administration accelerated approval pathway with a Prescription Drug User Fee Act target action date of April 5, 2026; Denali will present initial clinical data from the fully enrolled, ongoing Phase 1/2 study of DNL126 at the 2026 WORLDSymposium; DNL628 is enabled by Denali's Oligonucleotide TransportVehicle and is designed to cross the blood-brain barrier and reduce the tau protein by targeting the MAPT gene that encodes for tau; The Phase 1/2 study of TAK-594/DNL593 is ongoing with screening closed in Cohort B. Initial FTD-GRN patient data are expected in 2026. The program is being developed in collaboration with Takeda; Denali today announced that the U.S. FDA has lifted the clinical hold on the Investigational New Drug application for DNL952, and Denali will proceed with the Phase 1 study; The global Phase 2b LUMA study of BIIB122 completed enrollment of participants with early-stage Parkinson's disease in 2025, with a clinical readout expected in 2026; The Phase 2 study of eclitasertib in participants with moderate to severe ulcerative colitis is expected to have results in the first half of 2026.
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- Clinical Trial Update: Denali Therapeutics reported significant biomarker reductions in its Phase 1/2 trial for Hunter syndrome (MPS II), with tividenofusp alfa (DNL310) achieving an 80% mean reduction in cerebrospinal fluid heparan sulfate, indicating its potential to address the full disease spectrum.
- Launch Readiness: The company is preparing for the April 5, 2026 PDUFA date, with plans to submit a Biologics License Application (BLA), which would provide much-needed treatment options for patients with Hunter syndrome.
- Sanfilippo Syndrome Research: Preliminary data from the Phase 1/2 study of DNL126 (ETV:SGSH) in Sanfilippo syndrome showed an 83% mean reduction in cerebrospinal fluid heparan sulfate among 20 participants, offering new hope for treatment in a field lacking effective therapies.
- Pompe Disease Clinical Design: Denali presented the Phase 1 clinical study design for DNL952 (ETV:GAA) in Pompe disease, aimed at evaluating safety and tolerability across different dosing regimens, highlighting the therapeutic potential for muscle and nervous system manifestations.
- Clinical Data Presentation: Denali Therapeutics will showcase clinical and preclinical data from its Enzyme Transport Vehicle (ETV) programs at the 2026 WORLDSymposium, highlighting the potential for delivering enzyme replacement therapies throughout the body, including the brain.
- FDA Priority Review: The Biologics License Application for DNL310 (for Hunter syndrome) is under FDA Priority Review, with a decision expected by April 5, 2026, which could expedite its market entry.
- Multiple Oral Presentations: Two oral presentations will discuss clinical study data for DNL310 and DNL126 (for Sanfilippo syndrome type A), demonstrating the company's progress in rare disease research.
- Poster Presentation Content: Denali will also present several posters, including a health outcomes analysis for MPS II patients and the study design for DNL952 (for Pompe disease), further solidifying its leadership in rare disease treatments.
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- Clinical Trial Results: Denali Therapeutics' tividenofusp alfa demonstrated a 91% reduction in heparan sulfate levels in cerebrospinal fluid among 47 participants, indicating significant potential for improving neurocognitive function in Hunter syndrome patients.
- FDA Review Progress: The Biologics License Application for tividenofusp alfa is under FDA Priority Review, with a decision expected by April 5, 2026, which will provide urgently needed treatment options for patients.
- Treatment Safety: The most common adverse events in the clinical trial were infusion-related reactions, which significantly decreased in incidence with continued use, demonstrating the therapy's good tolerability.
- Market Outlook: As the first enzyme replacement therapy designed to cross the blood-brain barrier, tividenofusp alfa could transform the treatment landscape for Hunter syndrome, addressing the urgent market demand for new therapies.

- Clinical Trial Results: Denali Therapeutics' tividenofusp alfa demonstrated a 91% reduction in cerebrospinal fluid glycosaminoglycan levels in 47 participants, indicating significant potential in treating Hunter syndrome and possibly improving cognitive and behavioral outcomes for patients.
- FDA Priority Review: The Biologics License Application for tividenofusp alfa is under FDA Priority Review, with a decision expected by April 5, 2026, paving the way for market introduction and addressing the urgent needs of Hunter syndrome patients.
- Safety and Tolerability: The most common adverse events were infusion-related reactions, which significantly decreased with continued treatment, demonstrating good tolerability and laying the groundwork for broader application in clinical settings.
- Innovative Platform: Tividenofusp alfa utilizes Denali's TransportVehicle™ platform designed to cross the blood-brain barrier, representing a new direction in biotherapeutic development that could transform the treatment landscape for Hunter syndrome.
- Offering Size: Denali Therapeutics announced a public offering of 9,142,857 shares at $17.50 per share, expecting to raise approximately $200 million, which will significantly bolster its funding for research and operations.
- Pre-Funded Warrants: The offering includes pre-funded warrants allowing certain investors to purchase 2,285,714 shares at $17.49 each, enhancing investor engagement and participation in the capital raise.
- Underwriter Selection: The offering is managed by Goldman Sachs, J.P. Morgan, Morgan Stanley, and Jefferies, reflecting strong market confidence in Denali and providing robust promotional capabilities for the company.
- Future Outlook: Denali expects to close the offering on December 11, 2025, subject to customary closing conditions, with proceeds aimed at advancing its biotherapeutics designed to cross the blood-brain barrier, thereby strengthening its market position in neurodegenerative diseases.







