GTX-102

Phase 1/2 data show improvements across all domains and confirm that Phase 3 Aspire study is amply powered to establish efficacy of GTX-102 Phase 3 program on track to begin enrollment by end-of-year NOVATO, Calif., Nov. 09, 2024 (GLOBE NEWSWIRE) -- Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) today announced Phase 1/2 data in support of the Phase 3 Aspire study for GTX-102, its investigational antisense oligonucleotide for Angelman syndrome, that will be presented at the 2024 Foundation for Angelman Syndrome Therapeutics (FAST) Global Science Summit in Orlando, Florida. “Cognition is the building block for the development and ascertainment of many new skills across a range of the domains we have evaluated in the Phase 1/2 study. The data presented at FAST reinforce that the Aspire Phase 3 primary endpoint of cognition, as measured by Bayley-4, appears very well powered to show statistically significant separation between the GTX-102 and sham arms,” said Eric Crombez, M.D., chief medical officer at Ultragenyx. “We are on track to begin enrolling the Phase 3 Aspire study by the end of this year and have a robust and experienced global network of sites that will enable accelerated study execution.” The global Phase 3 Aspire study will enroll approximately 120 patients with Angelman syndrome with a genetically confirmed diagnosis of full maternal UBE3A gene deletion and will include a 48-week primary efficacy analysis period. The primary endpoint will be improvement in cognition assessed by Bayley-4 cognitive raw score, and the key secondary endpoint will be the Multi-domain Responder Index (MDRI) across the five domains of cognition, receptive communication, behavior, gross motor function, and sleep. As of the September Phase 1/2 data cut-off, patients in the Dose Expansion Cohorts demonstrated continued improvement across multiple domains at Week 48 (Day 338). Patients (n=40) in the Dose-escalation and Expansion Cohorts at Week 48 demonstrated a mean change in Bayley-4 Cognition Growth Scale Value (GSV) score from baseline of +6.7 compared to the minimally important difference of +5. Using the Phase 3 primary endpoint of Bayley-4 Cognition Raw score, the mean change from baseline was +10.9. This suggests the Phase 3 study has greater than 95% power to detect a treatment effect, even if the response in the sham arm is up to three times higher than observed changes in available natural history data1. Week 48 (Day 338) data from 28 patients in Expansion Cohorts A&B were evaluated with the Phase 3 key secondary endpoint of MDRI and showed a total net response of +2.0 (p-value < 0.0001). The data demonstrate that approximately 80% (22 of 28 patients) of patients have achieved clinically meaningful net improvement in at least one domain. These data confirm that the Phase 3 Aspire study is amply powered to establish the efficacy of GTX-102 on the primary endpoint of cognition or the key secondary endpoint of MDRI at the Week 48 timepoint. GTX-102 demonstrated a consistent and acceptable safety profile as of the data cutoff. The latest Ultragenyx corporate deck with these data updates can be accessed at https://ir.ultragenyx.com/. U.S. residents can learn more by visiting www.ultraclinicaltrials.com. About GTX-102GTX-102 is an investigational antisense oligonucleotide delivered via intrathecal administration and designed to target and inhibit expression of UBE3A-AS. Nonclinical studies have shown that GTX-102 reduces levels of UBE3A-AS and reactivates expression of the paternal UBE3A allele in neurons of the central nervous system (CNS). Reactivation of paternal UBE3A expression in animal models of Angelman syndrome has been associated with improvements in some of the neurological symptoms associated with the condition. GTX-102 has been granted Orphan Drug Designation, Rare Pediatric Disease Designation, and Fast Track Designation from the FDA and Orphan Designation and PRIME designation from the EMA. About the Phase 1/2 studyThe Phase 1/2, open-label, multiple-dose, dose-escalating study is evaluating the safety and tolerability of GTX-102 administered by intrathecal (IT) injection to pediatric patients with Angelman syndrome with a genetically confirmed diagnosis of full maternal UBE3A gene deletion. The study is also assessing clinical response as measured by a panel of efficacy assessments for the functional domains impacted in Angelman syndrome. The study has enrolled and treated 74 patients in both Dose-escalation and Expansion Cohorts. Patients in Dose-escalation Cohorts 4-7 are receiving long-term maintenance dosing. Data from the Expansion Cohorts will be used to verify the GTX-102 dose and treatment regimen for the pivotal Phase 3 study. About Angelman syndromeAngelman syndrome is a rare, neurogenetic disorder caused by loss-of-function of the maternally inherited allele of the UBE3A gene. The maternal-specific inheritance pattern of Angelman syndrome is due to genomic imprinting of UBE3A in neurons of the central nervous system (CNS), a naturally occurring phenomenon in which the maternal UBE3A allele is expressed and the paternal UBE3A is not. Silencing of the paternal UBE3A allele is regulated by the UBE3A antisense transcript (UBE3A-AS), the intended target of GTX-102. In almost all cases of Angelman syndrome, the maternal UBE3A allele is either missing or mutated, resulting in limited to no protein expression. This condition is generally not inherited but instead occurs spontaneously. It is estimated to affect approximately 60,000 people in commercially accessible geographies. Individuals with Angelman syndrome have a lifelong neurodevelopmental disorder including cognitive impairment, motor impairment, balance issues and debilitating seizures. Some individuals with Angelman syndrome are unable to walk and most do not speak. Anxiety and disturbed sleep can be serious challenges in individuals with Angelman syndrome. Although individuals with Angelman syndrome have a normal lifespan, they require continuous care and are unable to live independently. Angelman syndrome is not a degenerative disorder, but the loss of the UBE3A protein expression in neurons results in abnormal communications between neurons. Angelman syndrome is often misdiagnosed as autism or cerebral palsy. There are no currently approved therapies for Angelman syndrome; however, several symptoms of this disorder can be reversed in adult animal models of Angelman syndrome, suggesting that improvement of symptoms can potentially be achieved at any age. About Ultragenyx Pharmaceutical Inc.Ultragenyx is a biopharmaceutical company committed to bringing novel products to patients for the treatment of serious rare and ultrarare genetic diseases. The company has built a diverse portfolio of approved therapies and product candidates aimed at addressing diseases with high unmet medical need and clear biology for treatment, for which there are typically no approved therapies treating the underlying disease. The company is led by a management team experienced in the development and commercialization of rare disease therapeutics. Ultragenyx’s strategy is predicated upon time- and cost-efficient drug development, with the goal of delivering safe and effective therapies to patients with the utmost urgency. For more information on Ultragenyx, please visit the company's website at: www.ultragenyx.com. Ultragenyx Forward-Looking Statements and Use of Digital MediaExcept for the historical information contained herein, the matters set forth in this press release, including statements related to Ultragenyx's expectations and projections regarding its future operating results and financial performance, business plans and objectives for GTX-102, expectations regarding the tolerability and safety of GTX-102, and future clinical and regulatory developments for GTX-102 are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve substantial risks and uncertainties that could cause our clinical development programs, collaboration with third parties, future results, performance or achievements to differ significantly from those expressed or implied by the forward-looking statements. Such risks and uncertainties include, among others, the uncertainty of clinical drug development and unpredictability and lengthy process for obtaining regulatory approvals, the ability of the company to successfully develop GTX-102, the company’s ability to achieve its projected development goals in its expected timeframes, the risk that results from earlier studies may not be predictive of future study results, risks related to adverse side effects, risks related to reliance on third party partners to conduct certain activities on the company’s behalf , smaller than anticipated market opportunities for the company’s products and product candidates, manufacturing risks, competition from other therapies or products, and other matters that could affect sufficiency of existing cash, cash equivalents and short-term investments to fund operations, the company’s future operating results and financial performance, the timing of clinical trial activities and reporting results from same, and the availability or commercial potential of Ultragenyx’s products and drug candidates. Ultragenyx undertakes no obligation to update or revise any forward-looking statements. For a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to the business of Ultragenyx in general, see Ultragenyx's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (SEC) on November 6, 2024, and its subsequent periodic reports filed with the SEC. In addition to its SEC filings, press releases and public conference calls, Ultragenyx uses its investor relations website and social media outlets to publish important information about the company, including information that may be deemed material to investors, and to comply with its disclosure obligations under Regulation FD. Financial and other information about Ultragenyx is routinely posted and is accessible on Ultragenyx’s Investor Relations website (https://ir.ultragenyx.com/) and LinkedIn website (https://www.linkedin.com/company/ultragenyx-pharmaceutical-inc-/). ContactsUltragenyx Pharmaceutical Inc.InvestorsJoshua Higa+1-415-475-6370ir@ultragenyx.com MediaCarolyn Wang+1-415-225-5050media@ultragenyx.com Linking Angelman and Dup15q Data for Expanded Research (LADDER)

PRINCETON, N.J., Oct. 30, 2024 (GLOBE NEWSWIRE) -- Grace Therapeutics, Inc. (Nasdaq: GRCE) (Grace Therapeutics or the Company), a late-stage, biopharma company advancing GTx-104, its novel injectable formulation of nimodipine that addresses high unmet medical needs for a rare disease, aneurysmal subarachnoid hemorrhage (aSAH), today announced it will host a virtual key opinion leader (KOL) event on Wednesday, November 20, 2024 at 2:00 PM ET. To register, click here. The event will feature Abhishek Ray, MD (University Hospitals) and Andrew Webb, PharmD, BCCCP (Massachusetts General Hospital), who will discuss the high unmet medical need and current treatment landscape for patients suffering from aneurysmal Subarachnoid Hemorrhage (aSAH), a rare and life-threatening medical emergency. A live question and answer session will follow the formal presentations. About Abhishek Ray, MD Abhishek Ray, MD, is a fellowship-trained, board-certified neurological surgeon at University Hospitals and Associate Professor of neurological surgery at Case Western Reserve University School of Medicine. He specializes in caring for people with cerebrovascular disease (brain aneurysms, stroke, AVMs), pituitary tumors and meningiomas, and in minimally invasive techniques to treat degenerative spine disease. In neurological surgery, there are often multiple ways to treat a single problem, and Dr. Ray is committed to providing each patient with an individualized care plan to optimize results. In 2021, 2022, 2023, and 2024, he was selected by his peers to be included in Cleveland Magazine’s list of Top Doctors. After completing his undergraduate degree in biological systems engineering at the University of California – Davis, Dr. Ray went back to his hometown to attend medical school at the University of Kansas School of Medicine in Kansas City, Kansas, where he was elected to be an ambassador of the school and was inducted into the Alpha Omega Alpha Honor Medical Society. He then went on to complete neurological surgery residency at University Hospitals/Case Western Reserve University School of Medicine, where he also completed fellowship training in neuro-interventional surgery. Dr. Ray stayed on as faculty at UH/Case Western Reserve University School of Medicine to advance neurosurgical education there. He created a unique and comprehensive neurological surgery elective for second-year medical students, of which he is now the course director. He has been an instructor at national skull base courses for neurosurgical residents and fellows and has served as editor of the neuro-interventional section of CNS Nexus, an online library of neurosurgical cases to better prepare trainees for the operating room. About Andrew Webb, PharmD, BCCCP Andrew Webb, PharmD, BCCCP, is a board-certified neurocritical care clinical pharmacy specialist at Massachusetts General Hospital (MGH) and serves as adjunct clinical faculty at Northeastern University School of Pharmacy and Pharmaceutical Sciences. His clinical and research interests include subarachnoid hemorrhage, status epilepticus, traumatic brain injury, and optimizing the medical management of neurocritically ill patients and his clinical practice is on the multidisciplinary neurocritical care team at MGH’s 22-bed neurosciences intensive care unit. Dr. Webb is originally from Rhode Island and completed his undergraduate studies and Doctor of Pharmacy at the University of Rhode Island. He then completed his pharmacy practice residency at Mayo Clinic in Rochester, MN followed by residency in critical care at Oregon Health & Science University in Portland, OR. Dr. Webb serves on the MGH Comprehensive Stroke Center Quality Taskforce and the MGH Neurology Quality Assurance and Committee on Patient Safety, focusing on improving the quality, safety, and effectiveness of medication therapy in stroke, subarachnoid hemorrhage, and other neurologic conditions. He is active in the Neurocritical Care Society, American College of Clinical Pharmacy, and Society for Critical Care Medicine and serves on several committees within these organizations related to critical care and neurology practice, research, and education. He has lectured regionally and nationally on the pharmacotherapy of subarachnoid hemorrhage, status epilepticus, and the unique challenges of pharmacotherapy in neurocritical care. About aneurysmal Subarachnoid Hemorrhage (aSAH) aSAH is bleeding over the surface of the brain in the subarachnoid space between the brain and the skull, which contains blood vessels that supply the brain. A primary cause of such bleeding is the rupture of an aneurysm. Approximately 70% of aSAH patients experience death or dependence, and more than 30% die within one month of hemorrhage. Approximately 50,000 patients in the United States are affected by aSAH per year, based on market research. Outside of the United States, annual cases of aSAH are estimated at approximately 60,000 in the European Union, and approximately 150,000 in China. About the Grace Therapeutics Asset Portfolio GTx-104 is a clinical stage, novel, injectable formulation of nimodipine being developed for intravenous (IV) infusion in aSAH patients to address significant unmet medical needs. The unique nanoparticle technology of GTx-104 facilitates aqueous formulation of insoluble nimodipine for a standard peripheral IV infusion. GTx-104 provides a convenient IV delivery of nimodipine in the Intensive Care Unit potentially eliminating the need for nasogastric tube administration in unconscious or dysphagic patients. Intravenous delivery of GTx-104 also has the potential to lower food effects, drug-to-drug interactions, and eliminate potential dosing errors. Further, GTx-104 has the potential to better manage hypotension in aSAH patients. GTx-104 has been administered in over 150 healthy volunteers and was well tolerated with significantly lower inter- and intra-subject pharmacokinetic variability compared to oral nimodipine. The addressable market in the United States for GTx-104 is estimated to be about $300 million, based on market research. GTx-102 is a novel, concentrated oral-mucosal spray of betamethasone intended to improve neurological symptoms of Ataxia-Telangiectasia (A-T), for which there are currently no FDA-approved therapies. GTX-102 is a stable, concentrated oral spray formulation comprised of the gluco-corticosteroid betamethasone that, together with other excipients can be sprayed conveniently over the tongue of the A-T patient and is rapidly absorbed. The further development of GTx-102 has been deprioritized in favor of our focus on development of GTx-104. It is also possible that we may license or sell our GTx-102 drug candidate. GTx-101 is a non-narcotic, topical bio-adhesive film-forming bupivacaine spray designed to ease the symptoms of patients suffering with postherpetic neuralgia (PHN). GTx-101 is administered via a metered-dose of bupivacaine spray and forms a thin bio-adhesive topical film on the surface of the patient’s skin, which enables a touch-free, non-greasy application. It also comes in convenient, portable 30 ml plastic bottles. Unlike oral gabapentin and lidocaine patches, we believe that the biphasic delivery mechanism of GTx-101 has the potential for rapid onset of action and continuous pain relief for up to eight hours. No skin sensitivity was reported in a Phase 1 trial. The further development of GTx-101 has been deprioritized in favor of our focus on development of GTx-104. It is also possible that we may license or sell our GTx-101 drug candidate. About Grace Therapeutics Grace Therapeutics is a late-stage biopharma company with drug candidates addressing rare and orphan diseases. Grace Therapeutics’s novel drug delivery technologies have the potential to improve the performance of currently marketed drugs by achieving faster onset of action, enhanced efficacy, reduced side effects, and more convenient drug delivery. Grace Therapeutics’s lead clinical assets have each been granted Orphan Drug Designation by the FDA, which provides seven years of marketing exclusivity post-launch in the United States, and additional intellectual property protection with over 40 granted and pending patents. Grace Therapeutics’s lead clinical asset, GTx-104, is an intravenous infusion targeting aneurysmal Subarachnoid Hemorrhage (aSAH), a rare and life-threatening medical emergency in which bleeding occurs over the surface of the brain in the subarachnoid space between the brain and skull. For more information, please visit: www.gracetx.com. Forward-Looking Statements Statements in this press release that are not statements of historical or current fact constitute "forward-looking statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, as amended, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and "forward-looking information" within the meaning of Canadian securities laws (collectively, "forward-looking statements"). Such forward-looking statements involve known and unknown risks, uncertainties, and other factors that could cause the actual results of Grace Therapeutics to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements which explicitly describe such risks and uncertainties, readers are urged to consider statements containing the terms "believes," "belief," "expects," "intends," "anticipates," "estimates", "potential," "should," "may," "will," "plans," "continue", "targeted" or other similar expressions to be uncertain and forward-looking. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. The forward-looking statements in this press release, including statements regarding the timing of a data readout from the Company’s Phase 3 STRIVE-ON safety trial of GTx-104, the timing of the Company’s planned NDA submission with the FDA in connection with the Company's Phase 3 STRIVE-ON safety trial, GTx-104’s commercial prospects; the size of the addressable market for GTx-104, the Company’s beliefs regarding the potential benefits of GTx-104, including GTx-104's potential to bring enhanced treatment options to patients suffering from aSAH, and the anticipated benefits and future development, license or sale of the Company's other drug candidates are based upon Grace Therapeutics's current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, including, without limitation: (i) the success and timing of regulatory submissions of the Phase 3 STRIVE-ON safety trial for GTx-104; (ii) regulatory requirements or developments and the outcome and timing of the proposed NDA application for GTx-104; (iii) changes to clinical trial designs and regulatory pathways; (iv) legislative, regulatory, political and economic developments; and (v) actual costs associated with Grace Therapeutics's clinical trials as compared to management's current expectations. The foregoing list of important factors that could cause actual events to differ from expectations should not be construed as exhaustive and should be read in conjunction with statements that are included herein and elsewhere, including the risk factors detailed in documents that have been and are filed by Grace Therapeutics from time to time with the Securities and Exchange Commission and Canadian securities regulators. All forward-looking statements contained in this press release speak only as of the date on which they were made. Grace Therapeutics undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by applicable securities laws. For more information, please contact: Grace Therapeutics Contact: Prashant KohliChief Executive OfficerTel: 609-322-1602Email: info@gracetx.com www.gracetx.com Investor Relations: LifeSci AdvisorsMike MoyerManaging DirectorPhone: 617-308-4306Email: mmoyer@lifesciadvisors.com