APOC3

MB-111 is a potential first-in-class in vivo ultracompact CRISPR therapy for Familial Chylomicronemia Syndrome and Severe Hypertriglyceridemia Dr. Brown brings deep expertise in nucleic acid drug development as Mammoth advances its lead program, MB-111, to IND-enabling stage and continues to build a leading company in genetic medicines BRISBANE, CA, USA I May 05, 2025 I Mammoth Biosciences, Inc. , a biotechnology company harnessing its proprietary next-generation CRISPR gene editing platform to create potential one-time curative therapies, today announced the nomination of its first clinical development candidate, MB-111, and the appointment of biotechnology industry veteran, Bob D. Brown, Ph.D., to its Board of Directors. MB-111 utilizes CasPhi — an ultracompact CRISPR in vivo gene editing system that is less than half the size of first-generation, Cas9-based systems — encapsulated in a lipid nanoparticle for delivery to the liver after IV administration. Share MB-111 utilizes CasPhi — an ultracompact CRISPR in vivo gene editing system that is less than half the size of first-generation, Cas9-based systems — encapsulated in a lipid nanoparticle for delivery to the liver after IV administration. MB-111 has the potential to be a first-in-class, one-time treatment for patients with very high triglycerides including familial chylomicronemia syndrome (FCS) and severe hypertriglyceridemia (SHTG). MB-111 is designed to permanently disrupt the expression of the APOC3 gene in the liver, and thus to reduce expression of ApoC-III protein. ApoC-III is a critical driver of lipid metabolism and disrupting its production has been shown to reduce plasma triglycerides in patients with pathologically elevated levels, including those with FCS and SHTG. These patients suffer from recurrent episodes of acute pancreatitis, leading to frequent hospitalizations, as well as an increased risk of cardiovascular disease. Mammoth Biosciences is on track to initiate IND-enabling studies this year. “The nomination of our lead program as a development candidate is a major milestone for Mammoth and the gene editing field, as well as the first proof point of the therapeutic potential of our novel ultracompact CRISPR systems and gene editing technologies,” said Trevor Martin, Ph.D., co-founder and Chief Executive Officer of Mammoth Biosciences. “The preclinical data on MB-111 is compelling, and we’re excited about its potential to be a first-in-class genetic cure for debilitating diseases such as FCS and SHTG. We believe Dr. Brown’s extensive drug discovery and development experience, and track record of building leading companies in siRNA and antisense oligonucleotide therapeutics across rare and chronic diseases will be invaluable to our goal of increasing the number of patients who can derive benefit from Mammoth Biosciences’ genetic medicines.” Dr. Bob D. Brown brings over 30 years of experience in multidisciplinary biotechnology research and drug development, including in the US and ex-US jurisdictions. Most recently, Dr. Brown served as Chief Scientific Officer and Executive Vice President of R&D at Dicerna Pharmaceuticals, an RNAi-focused therapeutics company that was acquired by Novo Nordisk. At Novo, he served as President and Head of the Dicerna Transformation Research Unit and SVP. During his time at Dicerna, he led the discovery and early clinical development of numerous genetic medicines, including nedosiran for the treatment of primary hyperoxaluria, RG6346 for the treatment of chronic hepatitis B, belcesiran for the treatment of alpha-1 antitrypsin deficiency, and several other drug candidates now in the clinical development pipelines of large pharmaceutical companies. Prior to Dicerna, Dr. Brown held various positions at Genta, a clinical-stage antisense oligonucleotide therapeutics company, most recently as its Vice President of Research and Technology. Previously, he was a co-founder and Vice President of R&D of Oasis Biosciences, which was acquired by Gen-Probe. Dr. Brown is an inventor or co-inventor of more than 85 issued US patents, and earned a Ph.D. in molecular biology from the University of California, Berkeley and B.S. degrees in chemistry and biology from the University of Washington, Seattle. “I’m honored to join Mammoth Biosciences at such a pivotal moment, as CRISPR technology stands ready to transform healthcare and redefine the future of medicine,” said Dr. Brown. “I look forward to working with the exceptional Mammoth Biosciences team to harness the power of their groundbreaking platform to tackle some of the most pressing medical challenges and improve patients’ lives. Drawing on my experiences in drug discovery and clinical development, I aim to help advance Mammoth Biosciences’ ultracompact CRISPR gene editing therapies—starting with MB-111—toward clinical application.” About Mammoth Biosciences Mammoth Biosciences is a biotechnology company focused on leveraging its proprietary ultracompact CRISPR systems to develop potential long-term curative therapies for patients with life-threatening and debilitating diseases. Founded by CRISPR pioneer and Nobel laureate Jennifer Doudna and Trevor Martin, Janice Chen, and Lucas Harrington, the company’s ultracompact systems are designed to be more specific and enable in vivo gene editing in difficult to reach tissues utilizing both nuclease applications and new editing modalities beyond double stranded breaks, including base editing, reverse transcriptase editing, and epigenetic editing. The company is building out its wholly owned pipeline of potential in vivo gene editing therapeutics and capabilities and has partnerships with leading pharmaceutical and biotechnology companies to broaden the reach of its innovative and proprietary technology platform. Mammoth Biosciences’ deep science and industry experience, along with a robust and differentiated intellectual property portfolio, have enabled the company to further its mission to transform the lives of patients and deliver on the promise of CRISPR technologies. SOURCE: Mammoth Biosciences

– Agreement enables olezarsen to reach people living with conditions associated with elevated triglycerides across the world – – Ionis will continue to independently commercialize TRYNGOLZA™ (olezarsen) in the U.S. – CARLSBAD, CA, USA I March 26, 2025 I Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that it has entered into a license agreement under which Sobi® receives exclusive rights in countries outside the U.S., Canada and China to commercialize olezarsen as a potential treatment for familial chylomicronemia syndrome (FCS) and severely elevated triglycerides. Ionis will continue to independently commercialize olezarsen in the U.S. Olezarsen was approved by the FDA in December 2024 under the tradename TRYNGOLZA™ as an adjunct to diet to reduce triglycerides in adults with FCS – the first and only treatment in the U.S. for this rare, debilitating genetic disease. Olezarsen is currently under review by the European Medicines Agency (EMA) with a potential approval anticipated for the treatment of FCS this year. Sobi will be responsible for future regulatory submissions and commercialization in ex-U.S. geographies except Canada and China. Olezarsen was licensed to Theratechnologies for commercialization in Canada. “We look forward to deepening our long-standing partnership with Sobi and our shared commitment to improving the lives of people living with conditions marked by severely elevated triglycerides,” said Brett P. Monia, Ph.D., chief executive officer, Ionis. “This agreement enables us to advance our goal of making olezarsen available to patients globally, while focusing our independent commercialization efforts in the U.S. With anticipated data from our robust sHTG Phase 3 program in 2025, we are enthusiastic about the potential for olezarsen to also address the significant medical need in this more prevalent patient population in addition to FCS.” Sobi® (STO: SOBI) brings deep commercialization expertise for both rare and more prevalent conditions, with operations in more than 30 countries, and is committed to bringing olezarsen to as many global patients as possible. As Ionis’ current European commercialization partner for Waylivra® (volanesorsen), which is the only medicine approved for FCS in Europe, Sobi will leverage existing market expertise and distribution channels to enable an effective olezarsen launch in FCS and future potential expansion to a broader population with severely elevated triglycerides, assuming approval. Under the agreement, Ionis receives an upfront payment, additional payments based on achievement of milestones and a tiered royalty of up to mid-20% range on annual net sales. “We are thrilled to continue our collaboration with Ionis and bring this potential new medicine to patients if approved,” said Guido Oelkers, chief executive officer, Sobi. “This will enable us to further leverage our combined strengths and to continue to deliver our commitment to provide innovative medicines that transform the lives of people with rare and debilitating diseases.” In addition to FCS, Ionis is evaluating olezarsen for the treatment of severe hypertriglyceridemia (sHTG) in three Phase 3 clinical trials – CORE , CORE2 and ESSENCE . Data from ESSENCE are expected mid-2025 and data from CORE and CORE2 are expected in the second half of 2025. About Familial Chylomicronemia Syndrome (FCS) FCS is a rare, genetic disease characterized by extremely elevated triglyceride levels. It is caused by impaired function of the enzyme lipoprotein lipase (LPL). Because of limited LPL production or function, people with FCS cannot effectively break down chylomicrons, lipoprotein particles that are 90% triglycerides. FCS is estimated to impact up to approximately 3,000 people in the U.S. People living with FCS are at high risk of acute pancreatitis (AP) in addition to other chronic health issues such as fatigue and severe, recurrent abdominal pain. People living with FCS are sometimes unable to work, adding to the burden of disease. About Severe Hypertriglyceridemia (sHTG) sHTG is a disease categorized by triglyceride levels of 500 mg/dL and above. It develops due to primary (genetic) and secondary causes including diet and lifestyle, other medical conditions and certain medications. More than three million people are currently estimated to live with sHTG in the U.S. People living with sHTG are at risk of potentially life-threatening acute pancreatitis (AP) and atherosclerotic cardiovascular disease (ASCVD). Olezarsen has not been reviewed or approved for the treatment of severe hypertriglyceridemia (sHTG) by any regulatory authority. About TRYNGOLZA™ (olezarsen) TRYNGOLZA™ (olezarsen) was approved by the U.S. Food and Drug Administration as an adjunct to diet to reduce triglycerides in adults with familial chylomicronemia syndrome (FCS). TRYNGOLZA is an RNA-targeted medicine designed to lower the body’s production of apoC-III, a protein produced in the liver that is a key regulator of triglyceride metabolism. It is the only treatment currently indicated in the U.S. for FCS, a potentially life-threatening disease. For more information about TRYNGOLZA, visit TRYNGOLZA.com . IMPORTANT SAFETY INFORMATION CONTRAINDICATIONS TRYNGOLZA is contraindicated in patients with a history of serious hypersensitivity to TRYNGOLZA or any of the excipients in TRYNGOLZA. Hypersensitivity reactions requiring medical treatment have occurred. WARNINGS AND PRECAUTIONS Hypersensitivity Reactions Hypersensitivity reactions (including symptoms of bronchospasm, diffuse erythema, facial swelling, urticaria, chills and myalgias) have been reported in patients treated with TRYNGOLZA. Advise patients on the signs and symptoms of hypersensitivity reactions and instruct patients to promptly seek medical attention and discontinue use of TRYNGOLZA if hypersensitivity reactions occur. ADVERSE REACTIONS The most common adverse reactions (incidence >5% of TRYNGOLZA-treated patients and >3% higher frequency than placebo) were injection site reactions, decreased platelet count and arthralgia. Please see full Prescribing Information for TRYNGOLZA. About Ionis Pharmaceuticals, Inc. For three decades, Ionis has invented medicines that bring better futures to people with serious diseases. Ionis currently has six marketed medicines and a leading pipeline in neurology, cardiology, and select areas of high patient need. As the pioneer in RNA-targeted medicines, Ionis continues to drive innovation in RNA therapies in addition to advancing new approaches in gene editing. A deep understanding of disease biology and industry-leading technology propels our work, coupled with a passion and urgency to deliver life-changing advances for patients. To learn more about Ionis, visit Ionis.com and follow us on X (Twitter), LinkedIn and Instagram . SOURCE: Ionis Pharmaceuticals

SHANGHAI, China I March 17, 2025 I Rona Therapeutics Inc., a global leader in RNA-targeted therapeutics, announced the clearance of an Investigational New Drug (IND) by the U.S. Food and Drug Administration (FDA) for RN0361-an APOC3 targeted siRNA (small interfering RNA) therapeutic for severe hypertriglyceridemia (SHTG), mixed dyslipidemia, and familial chylomicronemia syndrome (FCS) treatment. The company plans to advance RN0361 development in HTG patients based on a favorable safety profile and sustained triglyceride (TG) reduction in a 6-month single dose phase 1 clinical trial. The upcoming randomized, double-blind, placebo controlled, multicenter global Ph2 study will evaluate RN0361 efficacy, safety and duration in hypertriglyceridemia patient population for nine-month follow-up period. RN0361 is a potential best-in-class APOC3 target siRNA utilizes Rona’s proprietary siRNA conjugate and oligo chemistry platform GAIA to enable robust and durable hepatocyte-specific silencing via subcutaneous administration. The therapy achieves durable gene silencing through optimized chemical modifications, significantly silencing APOC3 mRNA and reducing the expression of APOC3 protein. “This IND submission underscores our commitment to advance transformative RNAi therapies for patients with severe lipid disorders,” said Stella Shi, CEO and Founder of Rona Therapeutics . “RN0361’s Phase I data validate its potential as a best-in-class siRNA with durable efficacy and patient-friendly dosing. We look forward to collaborating with global investigators and agency to accelerate its development.” Dr. Alex M. DePaoli, CMO and EVP of translational medicine , was excited to share: “This Phase 2 study of RN0361 in dysmetabolic patients with hypertriglyceridemia will built on the evidence for RN0361 as an important therapeutic for multiple populations with significant hypertriglyceridemia and its pathologic consequences.” He added, “The remarkable potency and durability of triglyceride reduction already seen in the First in Human single dose study offers patients a potential powerful tool in the management of a substantial unmet need.” About Rona Therapeutics Rona Therapeutics is a global leader in nucleic acid innovative drug platform company, specializing in the treatment of metabolic and neurological diseases. Rona Therapeutics is always committed to developing the best and first-in-class siRNA drugs with differentiation and innovation to address unmet needs and improve outcome in cardiovascular diseases, obesity, and MASH. In addition, Rona Therapeutics is unlocking the potential of extra-hepatic delivery for neurological disorders and adipose/muscle delivery or various metabolic syndromes. SOURCE: Rona Therapeutics