Latest news with #GTIMD
Yahoo
15-05-2025
- Health
- Yahoo
Gene editing cures child of rare disease in world first
A child with an extremely rare genetic disorder has become the first to be genetically edited for his disease in a breakthrough for people suffering from uncommon conditions. KJ Muldoon was born with a rare metabolic disease known as severe carbamoyl phosphate synthetase 1 (CPS1) deficiency, which causes a build-up of ammonia and can result in brain damage and organ failure. It affects fewer than one in a million people, so there is little incentive for pharmaceutical companies to find a treatment. But in a medical first, doctors at the Children's Hospital of Philadelphia (CHOP) and Penn Medicine, used the genetic editing tool Crispr to correct the defect in his DNA which causes the condition. Crispr, which acts like genetic scissors to alter genetic code, is already being used for diseases such as sickle cell disease and beta thalassemia which affect hundreds of thousands of people. It is hoped the technique could be adapted to treat individuals with rare diseases for whom no medical treatments are available. 'Years and years of progress in gene editing and collaboration between researchers and clinicians made this moment possible, and while KJ is just one patient, we hope he is the first of many to benefit from a methodology that can be scaled to fit an individual patient's needs,' said Dr Rebecca Ahrens-Nicklas, director of the Gene Therapy for Inherited Metabolic Disorders Frontier Programme (GTIMD) at the Children's Hospital of Philadelphia. 'While KJ will need to be monitored carefully for the rest of his life, our initial findings are quite promising.' The personal treatment was developed in just six months and delivered via fatty nanoparticles injected into the liver to correct a faulty enzyme which causes the overproduction of ammonia. KJ spent the first months of his life in hospital, living a very restricted diet before receiving the first round of his bespoke therapy in February, when he was around seven months old. He has since had two more injections and doctors say he is now growing well and thriving and has been able to go home. Kyle Muldoon, KJ's father, said: 'We've been in the thick of this since KJ was born, and our whole world's been revolving around this little guy and his stay in the hospital. 'We're so excited to be able to finally be together at home so that KJ can be with his siblings, and we can finally take a deep breath.' Typically, patients with CPS1 deficiency are treated with a liver transplant, but they need to be old enough to handle such a major procedure. During that time, episodes of increased ammonia can put patients at risk for ongoing, lifelong brain damage or even prove fatal. Dr Kiran Musunuru, professor for translational research in Penn's Perelman School of Medicine, said: 'We want each and every patient to have the potential to experience the same results we saw in this first patient, and we hope that other academic investigators will replicate this method for many rare diseases and give many patients a fair shot at living a healthy life. 'The promise of gene therapy that we've heard about for decades is coming to fruition, and it's going to utterly transform the way we approach medicine.' Commenting on the research, Dr Alena Pance, senior lecturer in genetics at the University of Hertfordshire, said: 'Crispr-based therapy has been used to correct genetic diseases before. The approach in the paper is applicable to this specific form of the disease. 'The approach is applicable to any disease caused by a single nucleotide change, however more often than not, diseases are caused by a variety of variants so perhaps more general strategies could be more effective than very precise ones.' The research was published in the New England Journal of Medicine. Broaden your horizons with award-winning British journalism. Try The Telegraph free for 1 month with unlimited access to our award-winning website, exclusive app, money-saving offers and more.
Yahoo
15-05-2025
- Health
- Yahoo
World's First Patient Treated with Personalized CRISPR Gene Editing Therapy at Children's Hospital of Philadelphia
Landmark Study from CHOP and Penn Medicine Showcases the Power of Customized Gene Editing Therapy to Treat Patient with Rare Metabolic Disease PHILADELPHIA and NEW ORLEANS, May 15, 2025 /PRNewswire/ -- In a historic medical breakthrough, a child diagnosed with a rare genetic disorder has been successfully treated with a customized CRISPR gene editing therapy by a team at Children's Hospital of Philadelphia (CHOP) and Penn Medicine. The infant, KJ, was born with a rare metabolic disease known as severe carbamoyl phosphate synthetase 1 (CPS1) deficiency. After spending the first several months of his life in the hospital, on a very restrictive diet, KJ received the first dose of his bespoke therapy in February 2025 between six and seven months of age. The treatment was administered safely, and he is now growing well and thriving. The case is detailed today in a study published by The New England Journal of Medicine and was presented at the American Society of Gene & Cell Therapy Annual Meeting in New Orleans. This landmark finding could provide a pathway for gene editing technology to be successfully adapted to treat individuals with rare diseases for whom no medical treatments are available. "Years and years of progress in gene editing and collaboration between researchers and clinicians made this moment possible, and while KJ is just one patient, we hope he is the first of many to benefit from a methodology that can be scaled to fit an individual patient's needs," said Rebecca Ahrens-Nicklas, MD, PhD, director of the Gene Therapy for Inherited Metabolic Disorders Frontier Program (GTIMD) at Children's Hospital of Philadelphia and an assistant professor of Pediatrics in the Perelman School of Medicine at the University of Pennsylvania. CRISPR (clustered regularly interspaced short palindromic repeats)-based gene editing can precisely correct disease-causing variants in the human genome. Gene editing tools are incredibly complex and nuanced, and up to this point, researchers have built them to target more common diseases that affect tens or hundreds of thousands of patients, such as the two diseases for which there currently are U.S. Food and Drug Administration-approved therapies, sickle cell disease and beta thalassemia. However, relatively few diseases benefit from a "one-size-fits-all" gene editing approach since so many disease-causing variants exist. Even as the field advances, many patients with rare genetic diseases – collectively impacting millions of patients worldwide – have been left behind. A Collaborative Effort Ahrens-Nicklas and Kiran Musunuru, MD, PhD, the Barry J. Gertz Professor for Translational Research in Penn's Perelman School of Medicine, who are co-corresponding authors on the published report, began collaborating to study the feasibility of creating customized gene editing therapies for individual patients in 2023, building upon many years of research into rare metabolic disorders, as well as the feasibility of gene editing to treat patients. Both are members of the NIH funded Somatic Cell Genome Editing Consortium, which supports collaborative genome editing research. Ahrens-Nicklas and Musunuru decided to focus on urea cycle disorders. During the normal breakdown of proteins in the body, ammonia is naturally produced. Typically, our bodies know to convert the ammonia to urea and then excrete that urea through urination. However, a child with a urea cycle disorder lacks an enzyme in the liver needed to convert ammonia to urea. Ammonia then builds up to a toxic level, which can cause organ damage, particularly in the brain and the liver. After years of preclinical research with similar disease-causing variants, Ahrens-Nicklas and Musunuru targeted KJ's specific variant of CPS1, identified soon after his birth. Within six months, their team designed and manufactured a base editing therapy delivered via lipid nanoparticles to the liver in order to correct KJ's faulty enzyme. In late February 2025, KJ received his first infusion of this experimental therapy, and since then, he has received follow-up doses in March and April 2025. In the newly published New England Journal of Medicine paper, the researchers, along with their academic and industry collaborators, describe the customized CRISPR gene editing therapy that was rigorously yet speedily developed for administration to KJ. As of April 2025, KJ had received three doses of the therapy with no serious side effects. In the short time since treatment, he has tolerated increased dietary protein and needed less nitrogen scavenger medication. He also has been able to recover from certain typical childhood illnesses like rhinovirus without ammonia building up in his body. Longer follow-up is needed to fully evaluate the benefits of the therapy. "While KJ will need to be monitored carefully for the rest of his life, our initial findings are quite promising," Ahrens-Nicklas said. "We want each and every patient to have the potential to experience the same results we saw in this first patient, and we hope that other academic investigators will replicate this method for many rare diseases and give many patients a fair shot at living a healthy life," Musunuru said. "The promise of gene therapy that we've heard about for decades is coming to fruition, and it's going to utterly transform the way we approach medicine." A Future for KJ Typically, patients with CPS1 deficiency, like KJ, are treated with a liver transplant. However, for patients to receive a liver transplant, they need to be medically stable and old enough to handle such a major procedure. During that time, episodes of increased ammonia can put patients at risk for ongoing, lifelong neurologic damage or even prove fatal. Because of these threats to lifelong health, the researchers knew that finding new ways to treat patients who are too young and small to receive liver transplants would be lifechanging for families whose children faced this disorder. "We would do anything for our kids, so with KJ, we wanted to figure out how we were going to support him and how we were going to get him to the point where he can do all the things a normal kid should be able to do," his mother, Nicole Muldoon, said. "We thought it was our responsibility to help our child, so when the doctors came to us with their idea, we put our trust in them in the hopes that it could help not just KJ but other families in our position." "We've been in the thick of this since KJ was born, and our whole world's been revolving around this little guy and his stay in the hospital," his father, Kyle Muldoon, said. "We're so excited to be able to finally be together at home so that KJ can be with his siblings, and we can finally take a deep breath." This study was supported by grants from the National Institutes of Health Somatic Cell Genome Editing Program (U01TR005355, U19NS132301), as well as additional National Institutes of Health grants (R35HL145203, U19NS132303, DP2CA281401, P01HL142494). In-kind contributions were made by Acuitas Therapeutics, Integrated DNA Technologies, Aldevron, and Danaher Corporation. Additional funding was provided by the CHOP Research Institute's Gene Therapy for Inherited Metabolic Disorders Frontier Program. Musunuru et al, "Patient-Specific In Vivo Gene Editing to Treat a Rare Genetic Disease." N Engl J Med. Online May 15, 2025. DOI: 10.1056/NEJMoa2504747. About Children's Hospital of Philadelphia: A non-profit, charitable organization, Children's Hospital of Philadelphia was founded in 1855 as the nation's first pediatric hospital. Through its long-standing commitment to providing exceptional patient care, training new generations of pediatric healthcare professionals, and pioneering major research initiatives, the hospital has fostered many discoveries that have benefited children worldwide. Its pediatric research program is among the largest in the country. The institution has a well-established history of providing advanced pediatric care close to home through its CHOP Care Network, which includes more than 50 primary care practices, specialty care and surgical centers, urgent care centers, and community hospital alliances throughout Pennsylvania and New Jersey, as well as the Middleman Family Pavilion and its dedicated pediatric emergency department in King of Prussia. In addition, its unique family-centered care and public service programs have brought Children's Hospital of Philadelphia recognition as a leading advocate for children and adolescents. For more information, visit About Penn Medicine Penn Medicine is one of the world's leading academic medical centers, dedicated to the related missions of medical education, biomedical research, excellence in patient care, and community service. The organization consists of the University of Pennsylvania Health System (UPHS) and Penn's Raymond and Ruth Perelman School of Medicine, founded in 1765 as the nation's first medical school. The Perelman School of Medicine is consistently among the nation's top recipients of funding from the National Institutes of Health, with $580 million awarded in the 2023 fiscal year. Home to a proud history of "firsts," Penn Medicine teams have pioneered discoveries that have shaped modern medicine, including CAR T cell therapy for cancer and the Nobel Prize-winning mRNA technology used in COVID-19 vaccines. The University of Pennsylvania Health System cares for patients in facilities and their homes stretching from the Susquehanna River in Pennsylvania to the New Jersey shore. UPHS facilities include the Hospital of the University of Pennsylvania, Penn Presbyterian Medical Center, Chester County Hospital, Doylestown Health, Lancaster General Health, Princeton Health, and Pennsylvania Hospital—the nation's first hospital, chartered in 1751. Additional facilities and enterprises include Penn Medicine at Home, GSPP Rehabilitation, Lancaster Behavioral Health Hospital, and Princeton House Behavioral Health, among others. Penn Medicine is an $11.9 billion enterprise powered by nearly 49,000 talented faculty and staff. Contact: Ben LeachChildren's Hospital of Philadelphia(609) 634-7906Leachb@ Matt ToalPerelman School of MedicinePenn View original content to download multimedia: SOURCE Children's Hospital of Philadelphia Error in retrieving data Sign in to access your portfolio Error in retrieving data Error in retrieving data Error in retrieving data Error in retrieving data
