Glycogen Storage Disease

Biomarker cohort for delpacibart braxlosiran (del-brax), the first potential therapy to target DUX4, is measuring changes in DUX4 regulated biomarkers; del-brax 2 mg/kg will be administered every six weeks Enrollment in the del-brax biomarker cohort expected to be completed in 1H 2025; on track to initiate del-brax functional cohort in 1H 2025In previously reported initial data, del-brax 2 mg/kg every six weeks showed unprecedented and consistent reductions of DUX4 regulated genes, significant decreases in novel circulating biomarker and creatine kinase, and trends of functional improvement at the four-month timepoint SAN DIEGO, Oct. 30, 2024 /PRNewswire/ -- Avidity Biosciences, Inc. (Nasdaq: RNA), a biopharmaceutical company committed to delivering a new class of RNA therapeutics called Antibody Oligonucleotide Conjugates (AOCs™), today announced the initiation of a biomarker cohort in the Phase 1/2 FORTITUDE™ trial of delpacibart braxlosiran (del-brax/AOC 1020) in people living with facioscapulohumeral muscular dystrophy (FSHD). Avidity is pursuing a potential accelerated approval path for del-brax and expects enrollment in the biomarker cohort to be completed in the first half of 2025. Avidity also remains on track to initiate a functional cohort in the first half of 2025. In addition, enrollment of the FORTITUDE Open-label Extension study (OLE) is ongoing. Continue Reading (PRNewsfoto/Avidity Biosciences, Inc.) Del-brax is the first investigational therapy designed to treat the underlying cause of FSHD by directly targeting the disease-causing gene, double homeobox 4 (DUX4). Currently, there are no approved therapies for the treatment of FSHD, a rare, hereditary disorder marked by life-long, relentless loss of muscle function, significant pain, fatigue, and progressive disability. "The initiation of the biomarker cohort marks a key step in our strategy to pursue a potential accelerated approval path for del-brax, the first potential treatment to directly target the root cause of FSHD," said Steve Hughes, M.D., chief medical officer at Avidity. "We are very pleased with the del-brax 2 mg/kg data which showed unprecedented and consistent reductions of DUX4-regulated genes, significant decreases in novel circulating biomarker and creatine kinase, and trends of functional improvement with favorable safety and tolerability at the four-month timepoint. We are advancing our clinical studies for del-brax as quickly as possible as we understand the urgency to bring a potential new treatment to people living with FSHD who have no treatment options." The biomarker cohort in the FORTITUDE trial will assess the impact of del-brax 2 mg/kg every six weeks in people living with FSHD, ages 16-70. The primary endpoints of the study are changes in DUX4 regulated gene expression and DUX4 regulated circulating biomarker. For people living with FSHD it is important to maintain suppression of DUX4 at all times as aberrant gene expression is toxic to the muscles. Favorable safety and tolerability, as well as decreases in circulating biomarker and creatine kinase levels were similar for patients treated with 2mg/kg or 4mg/kg of del-brax. Due to this similarity, Avidity selected 2 mg/kg of del-brax to be administered every six weeks, designed to ensure continuous suppression of DUX4 for the biomarker and functional cohorts. In June of this year, Avidity reported positive initial del-brax 2 mg/kg data at four months from the Phase 1/2 FORTITUDE trial demonstrating unprecedented and consistent reductions of greater than 50% in DUX4 regulated genes, mean reductions of 25% or greater in novel circulating biomarker and creatine kinase, trends of functional improvement, and favorable safety and tolerability in people living with FSHD at the 31st Annual FSHD Society International Research Congress. About the Phase 1/2 FORTITUDE™ trial The FORTITUDE™ trial is a randomized, placebo-controlled, double-blind, Phase 1/2 clinical trial designed to evaluate single and multiple doses of delpacibart braxlosiran or del-brax (AOC 1020) in approximately 100 participants with facioscapulohumeral muscular dystrophy (FSHD). FORTITUDE will evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of del-brax administered intravenously. Activity of del-brax will be assessed using key biomarkers, including DUX4-regulated muscle and circulating biomarkers and magnetic resonance imaging (MRI) measures of muscle volume and composition. Though the Phase 1/2 trial is not statistically powered to assess functional benefit, it will explore the clinical activity of del-brax including measures of mobility and muscle strength as well as patient reported outcomes and quality of life measures. Participants will have the option to enroll in FORTITUDE-OLE, an open-label extension study once participation in the FORTITUDE study is complete. For more information about the FORTITUDE trial, visit the FORTITUDE study website or visit and search for NCT05747924. About the Phase 2 FORTITUDE-OLE™ trial FORTITUDE-OLE™ is an open-label, multi-center trial designed to evaluate the long-term safety and tolerability of delpacibart braxlosiran or del-brax (AOC 1020) in participants with facioscapulohumeral muscular dystrophy (FSHD) who were previously enrolled in the FORTITUDE Phase 1/2 trial. This trial will continue to evaluate the safety, tolerability, PK, PD, and efficacy of del-brax in participants that enrolled in the randomized, placebo-controlled, Phase 1/2 FORTITUDE clinical trial. Participants who enroll in the FORTITUDE-OLE study will receive del-brax regardless of whether they received active treatment or placebo in the FORTITUDE study. The total duration of active treatment with del-brax in the FORTITUDE-OLE is approximately 24 months. Avidity may extend active treatment beyond 24 months at a future timepoint. For more information on the FORTITUDE-OLE study click here or visit and search for NCT06547216. About Del-brax (AOC 1020) Del-brax (AOC 1020) is designed to treat the underlying cause of FSHD, which is caused by the abnormal expression of a gene called double homeobox 4 or DUX4. The abnormal expression of DUX4 protein leads to changes in gene expression in muscle cells that are associated with the life-long, progressive loss of muscle function in patients with FSHD. Del-brax aims to reduce the expression of DUX4 mRNA and DUX4 protein in muscles in people with FSHD. Del-brax consists of a proprietary monoclonal antibody that binds to the transferrin receptor 1 (TfR1) conjugated with a siRNA targeting DUX4 mRNA. Avidity reported positive initial del-brax 2 mg/kg data at four months from the Phase 1/2 FORTITUDE trial demonstrating unprecedented and consistent reductions of greater than 50% in DUX4 regulated genes, trends of functional improvement, and favorable safety and tolerability in people living with FSHD. Del-brax is currently in Phase 1/2 development as part of the FORTITUDE™ trial in individuals with FSHD. The U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA) have granted Orphan designation for del-brax and the FDA has granted del-brax Fast Track designation. About Facioscapulohumeral Muscular Dystrophy (FSHD) Facioscapulohumeral muscular dystrophy (FSHD) is a rare, progressive, and variable hereditary muscle-weakening condition marked by life-long, relentless loss of muscle function, significant pain, fatigue, and progressive disability. It is characterized by progressive and often asymmetric skeletal muscle loss that initially causes weakness in muscles in the face, shoulders, arms and trunk and progresses to weakness in muscles in the lower body. FSHD is an autosomal dominant disease caused by the aberrant expression of the DUX4 (double homeobox 4) gene in the skeletal muscle, which activates genes that are toxic to muscle cells and leads to a series of downstream events that result in skeletal muscle wasting and compromised muscle function. Skeletal muscle weakness results in physical limitations throughout the whole body, including an inability to lift arms for more than a few seconds, loss of ability to show facial expressions and serious speech impediments. These symptoms cause many people affected by FSHD to become dependent on the use of a wheelchair for mobility. Currently, there are no approved treatments for people living with FSHD. About Avidity Avidity Biosciences, Inc.'s mission is to profoundly improve people's lives by delivering a new class of RNA therapeutics - Antibody Oligonucleotide Conjugates (AOCs™). Avidity is revolutionizing the field of RNA with its proprietary AOCs, which are designed to combine the specificity of monoclonal antibodies with the precision of oligonucleotide therapies to address targets and diseases previously unreachable with existing RNA therapies. Utilizing its proprietary AOC platform, Avidity demonstrated the first-ever successful targeted delivery of RNA into muscle and is leading the field with clinical development programs for three rare muscle diseases: myotonic dystrophy type 1 (DM1), Duchenne muscular dystrophy (DMD) and facioscapulohumeral muscular dystrophy (FSHD). Avidity is broadening the reach of AOCs with its advancing and expanding pipeline including programs in cardiology and immunology through internal discovery efforts and key partnerships. Avidity is headquartered in San Diego, CA. For more information about our AOC platform, clinical development pipeline and people, please visit and engage with us on LinkedIn and X. Forward-Looking Statements Avidity cautions readers that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on the company's current beliefs and expectations. Such forward-looking statements include, but are not limited to, statements regarding: the primary endpoints, design, goals and other details related to the FORTITUDE™ trial and each of its cohorts; the status and clinical development of del-brax, including any potential accelerated approval; Avidity's plans for the FORTITUDE-OLE™ study and the timing thereof; the characterization of safety, tolerability and functional data associated with del-brax from the Phase 1/2 FORTITUDE trial; the impact of such data on the advancement of del-brax; the plans and timing of adding a functional cohort for the FORTITUDE trial and the biomarker and functional cohorts potentially serving as the basis for registration; the potential of Avidity's product candidates to treat rare diseases and Avidity's efforts to bring them to people suffering from applicable diseases; and the potential of AOCs to target a range of different cells and tissues beyond the liver, and to treat cardiac and immunological diseases. The inclusion of forward-looking statements should not be regarded as a representation by Avidity that any of these plans will be achieved. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Avidity's business and those beyond its control, including, without limitation: preliminary results of a clinical trial are not necessarily indicative of final results and additional participant data related to del-brax that continues to become available may be inconsistent with the data produced as of the date hereof, and further analysis of existing data and analysis of new data may lead to conclusions different from those established as of the data cutoff; unexpected adverse side effects to, or inadequate efficacy of, Avidity's product candidates that may delay or limit their development, regulatory approval and/or commercialization, or may result in clinical holds which may not be timely lifted, recalls or product liability claims; Avidity's current and planned cohorts in the FORTITUDE trial may not support the registration of del-brax; Avidity is early in its development efforts; Avidity's approach to the discovery and development of product candidates based on its AOC platform is unproven, and the company does not know whether it will be able to develop any products of commercial value; potential delays in the commencement, enrollment, data readouts and completion of preclinical studies or clinical trials; Avidity's dependence on third parties in connection with preclinical and clinical testing and product manufacturing; regulatory developments in the United States and foreign countries; and other risks described in Avidity's Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the Securities and Exchange Commission (SEC) on February 28, 2024, and in subsequent filings with the SEC. Avidity cautions readers not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and the company undertakes no obligation to update such statements to reflect events that occur or circumstances that arise after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor Contact: Michael MacLean (619) 837-5014 [email protected] Media Contact: Navjot Rai (619) 837-5016 [email protected] SOURCE Avidity Biosciences, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Investigational, next-generation therapy for Pompe disease delivers GYS1 siRNA to muscle tissue Phase 1a safety and bioactivity data in normal healthy volunteers supports moving into first-in-patient LOPD trial PHILADELPHIA, PA, USA I October 29, 2024 I Aro Biotherapeutics , a clinical-stage biotechnology company working to develop potent and tissue-targeted medicines, today announced the initiation of the Phase 1b portion of its clinical trial of ABX1100, a novel potential treatment for late-onset Pompe disease (LOPD). By targeting a known receptor called CD71, ABX1100 delivers siRNA therapy to muscle tissue, where it inhibits the production of the GYS1 enzyme, which is responsible for synthesizing glycogen. In the planned 1b study, investigators seek to enroll adults with LOPD to evaluate the safety and bioactivity of ABX1100. More information about the trial is available at ClinicalTrials.gov using the identifier NCT06109948. “The limitations of enzyme replacement therapy for Pompe disease underscore the need for new therapies with novel mechanisms of action,” said Aneal Khan, MD, principal investigator of the trial and a pediatrician and medical geneticist at the Metabolic and Genetic in Calgary (MAGIC) Clinic in Alberta, Canada. “ABX1100 is being evaluated as a new therapeutic approach for individuals with late-onset Pompe disease, and we are eager to begin this trial in the underserved Pompe disease population.” Pompe disease is a rare neuromuscular disorder driven by the toxic buildup of glycogen, a stored form of sugar used for energy, in the muscle. This over-accumulation of glycogen leads to progressive loss of muscle function, weakness, and disability that can eventually progress to death from respiratory failure. 1 Currently available enzyme replacement therapies (ERTs) for Pompe disease have limited long-term efficacy. Preclinical studies suggest that inhibiting the production of GYS1 may be a valuable addition or alternative to ERT. “The encouraging preclinical and clinical evidence generated to date provides a solid foundation for ongoing clinical studies of ABX1100, which has the potential to be the first new treatment for Pompe disease beyond ERT. We anticipate dosing the first patient with Pompe disease in the Phase 1b study before the end of 2024,” noted Susan Dillon, Ph.D., co-founder, president and chief executive officer of Aro. “ABX1100 was well tolerated in a recently completed Phase 1a trial conducted in normal healthy volunteers, and it showed durable GYS1 mRNA knockdown in muscle biopsies, with effects lasting through at least 10 weeks following a single dose,” added Dr. Dillon. “The study achieved the goal of identifying a safe and effective starting dose for studies in patients with LOPD. We plan to present the Phase 1a results at a future medical conference.” About ABX1100 ABX1100, an investigational treatment for Pompe disease, is comprised of a CD71 receptor-binding Centyrin conjugated to a small interfering RNA (siRNA) that specifically interferes with expression of GYS1 messenger RNA (mRNA), thereby reducing levels and overall activity of the GYS1 enzyme in muscle tissues. ABX1100 demonstrated a favorable safety profile in toxicology studies, with durable reductions in GYS1 mRNA in muscles, supporting the potential for quarterly dosing. ABX1100 has received Orphan Drug Designation and Rare Pediatric Disease status from the United States Food and Drug Administration (FDA). About Aro Biotherapeutics Aro Biotherapeutics is a biotechnology company working to develop potent and versatile tissue-targeted genetic medicines with a platform based on a proprietary protein technology called Centyrins. The company is developing a wholly owned pipeline of Centyrin-based therapeutic candidates for tissue-specific targeting of therapeutics for a diverse set of diseases. For more information, visit www.arobiotx.com . Reference SOURCE : Aro Biotherapeutics

SHIRLEY, N.Y., Oct. 29, 2024 /PRNewswire/ -- American Regent announces the launch of 30 mL Epinephrine Injection, USP.1 Epinephrine Injection, USP is indicated for emergency treatment of allergic reactions (Type I), including anaphylaxis, which may result from insect stings or bites, foods, drugs, sera, diagnostic testing substances, and other allergens, as well as idiopathic anaphylaxis or exercise-induced anaphylaxis. Epinephrine is also indicated to increase mean arterial blood pressure in adult patients with hypotension associated with septic shock. Continue Reading Epinephrine Injection, USP is supplied as a 30 mg/30 mL (1 mg/mL) multiple-dose vial in a shelf pack of one. "With the approval of Epinephrine Injection, USP we continue to show our commitment to ensuring both patients and providers have access to high-quality treatment options," stated Joann Gioia, Vice President and Chief Commercial Officer at American Regent, Inc. Product is available for immediate shipment. Customers can order Epinephrine Injection, USP through their wholesaler/distributor or by contacting our Customer Support Group at 1-800-645-1706. Epinephrine Injection, USP is supplied as follows: Please see the accompanying Important Safety Information in addition to the Full Prescribing Information. For additional information, please visit americanregent.com. REFERENCE: 1. Epinephrine Injection, USP. Package insert. American Regent, Inc. © 2024 American Regent, Inc. All rights reserved. PP-EP-US-0024 5 Ramsey Road, Shirley, NY 11747 \\ 1.800.645.1706 F 631.924.1731 \\ A Daiichi Sankyo Group Company Epinephrine Injection, USP 30 mL For intramuscular, subcutaneous, and intravenous use. INDICATIONS AND USAGE Anaphylaxis Emergency treatment of allergic reactions (Type I), including anaphylaxis, which may result from insect stings or bites, foods, drugs, sera, diagnostic testing substances, and other allergens, as well as idiopathic anaphylaxis or exercise-induced anaphylaxis. Hypotension associated with Septic Shock To increase mean arterial blood pressure in adult patients with hypotension associated with septic shock. IMPORTANT SAFETY INFORMATION CONTRAINDICATIONS: None. WARNINGS AND PRECAUTIONS Incorrect Locations of Injection for Anaphylaxis: Injection into the anterolateral aspect of the thigh (vastus lateralis muscle) is the most appropriate location for administration because of its location, size, and available blood flow. Injection into (or near) smaller muscles, such as in the deltoid, is not recommended. Do not administer repeated injections of epinephrine at the same site, as the resulting vasoconstriction may cause tissue necrosis. Do not inject into buttock, digits, hands, or feet. Serious Infections at the Injection Site: Rare cases of serious skin and soft tissue infections, including necrotizing fasciitis and myonecrosis caused by Clostridia (gas gangrene), have been reported. Extravasation and Tissue Necrosis with Intravenous Infusion: Avoid extravasation into tissues, which can cause local necrosis. When epinephrine is administered intravenously, check the infusion site frequently. Hypertension: Because individual response to epinephrine may vary significantly, monitor blood pressure frequently and titrate to avoid excessive increases in blood pressure. Patients receiving monoamine oxidase inhibitors or antidepressants of the triptyline or imipramine types may experience severe, prolonged hypertension. Pulmonary Edema: Epinephrine increases cardiac output and causes peripheral vasoconstriction, which may result in pulmonary edema. Renal Impairment: Epinephrine constricts renal blood vessels, which may result in oliguria or renal impairment. Cardiac Arrhythmias and Ischemia: Epinephrine may induce cardiac arrhythmias and myocardial ischemia, especially in patients suffering from coronary artery disease or cardiomyopathy. May aggravate angina pectoris or produce ventricular arrhythmias. Allergic Reactions Associated with Sulfite: The Epinephrine 30 mL multiple-dose vial contains sodium metabisulfite, which may cause mild to severe allergic reactions including anaphylaxis or asthmatic episodes in susceptible individuals. ADVERSE REACTIONS Common adverse reactions to systemically administered epinephrine include, but are not limited to, anxiety, apprehensiveness, restlessness, tremor, weakness, dizziness, sweating, palpitations, pallor, nausea and vomiting, headache, and respiratory difficulties. These symptoms occur in some persons receiving therapeutic doses of epinephrine, but are more likely to occur in patients with heart disease, hypertension, or hyperthyroidism. The true incidence of adverse reactions associated with the systemic use of epinephrine is difficult to determine. Adverse reactions reported in observational trials, case reports, and studies are listed below by body system: Cardiovascular: Angina, arrhythmias, hypertension, pallor, palpitations, tachyarrhythmia, tachycardia, vasoconstriction, ventricular ectopy, and stress cardiomyopathy. Rapid rises in blood pressure associated with epinephrine use have produced cerebral hemorrhage, particularly in elderly patients with cardiovascular disease. Neurological: Disorientation, impaired memory, panic, psychomotor agitation, sleepiness, tingling. Psychiatric: Anxiety, apprehensiveness, restlessness. Other: Patients with Parkinson's disease may experience psychomotor agitation or a temporary worsening of symptoms. Diabetic patients may experience transient increases in blood sugar. Injection into the buttock has resulted in cases of gas gangrene. Rare cases of serious skin and soft tissue infections, including necrotizing fasciitis and myonecrosis caused by Clostridia (gas gangrene), have been reported following epinephrine injection in the thigh. USE IN SPECIFIC POPULATIONS Elderly patients and pregnant women may be at greater risk of developing adverse reactions when epinephrine is administered parenterally. Pregnancy May cause fetal harm. Labor or Delivery: There are risks to the mother and fetus associated with epinephrine use during labor or delivery. Epinephrine usually inhibits spontaneous or oxytocin-induced contractions of the pregnant human uterus and may delay the second stage of labor. Avoid epinephrine during the second stage of labor. Although epinephrine may improve maternal hypotension associated with septic shock and anaphylaxis, it may result in uterine vasoconstriction, decreased uterine blood flow, and fetal anoxia. Lactation There is no information regarding the presence of epinephrine in human milk or the effects of epinephrine on the breastfed infant or on milk production. Pediatric Use Reported clinical experience with the use of epinephrine suggests that the adverse reactions seen in children are similar in nature and extent to those both expected and reported in adults. Safety and effectiveness of epinephrine in pediatric patients with septic shock have not been established. Geriatric Use In general, dose selection for an elderly patient should be cautious, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. OVERDOSAGE Overdosage of epinephrine may produce extremely elevated arterial pressure, which may result in cerebrovascular hemorrhage, particularly in elderly patients. Overdosage may also result in pulmonary edema, transient bradycardia followed by tachycardia, and these may be accompanied by potentially fatal cardiac arrhythmias. Subsidence of the ventricular effects may be followed by atrial tachycardia and occasionally by atrioventricular block. Myocardial ischemia and infarction, cardiomyopathy, extreme pallor and coldness of the skin, metabolic acidosis due to elevated blood lactic acid levels, and renal insufficiency have also been reported. For additional Safety Information, please see the Full Prescribing Information. REF-2454 4/2023 You are encouraged to report adverse drug events (ADEs) to American Regent®: T 1.800.734.9236; E [email protected]; F 1.610.650.0170 ADEs may also be reported to the FDA: 1.800.FDA.1088 or Medical information: T 1.888.354.4855 (9:00 am–5:00 pm Eastern Time, Monday–Friday) medical information outside of normal business hours that cannot wait until the next business day, please call 1.877.845.6371 About American Regent For more than 50 years, American Regent has been developing, manufacturing, and supplying quality generic and branded injectables. For more than 20 years, we have been a leader in IV iron therapy. We are committed to setting a higher standard for responsiveness and reliability as a US-based manufacturer. To ensure that we deliver on our mission to improve human and animal health, we continue to make investments in expanding and modernizing our manufacturing facilities in Ohio and New York and have expanded our footprint into California. This growth will increase our capacity, create redundancies across our manufacturing sites, and strengthen our expertise in the development of complex drug products and delivery systems. What that means for you is a partner committed to delivering essential medications now and in the future. For more information, please visit . About Daiichi Sankyo Daiichi Sankyo is an innovative global healthcare company contributing to the sustainable development of society that discovers, develops, and delivers new standards of care to enrich the quality of life around the world. With more than 120 years of experience, Daiichi Sankyo leverages its world-class science and technology to create new modalities and innovative medicines for people with cancer, cardiovascular, and other diseases with high unmet medical needs. For more information, please visit . SOURCE American Regent, Inc. 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