University of Manchester announces partnership with AVROBIO for Hunter syndrome gene therapy – PharmiWeb.com
Posted: October 10, 2020 at 8:06 am
The University of Manchester, part of the prestigious Russell Group of universities, has announced today a groundbreaking gene therapy partnership to ease the lifelong suffering of people with Hunter syndrome.
The University has agreed to a worldwide license and collaborative research funding agreement with AVROBIO, Inc., a leading clinical-stage gene therapy company with a mission to free people from a lifetime of genetic disease, based in Cambridge, Massachusetts, USA.
The significant partnership agreement is for the clinical development of an investigational lentiviral gene therapy for mucopolysaccharidosis type II (MPS II), or Hunter syndrome, a rare and deadly lysosomal disorder that primarily affects young boys.
Hunter syndrome, which affects an estimated one in 100,000 males worldwide, causes devastating complications throughout the body and brain, including severe cardiac and respiratory dysfunction, skeletal malformations and hearing impairment. Children with severe cases of Hunter syndrome typically show early symptoms in their toddler years and begin to regress developmentally around age six, losing basic motor skills and cognitive function.
The current standard of care is weekly enzyme replacement therapy (ERT), which can delay some complications but does not halt overall progression of the disease and has not been demonstrated to address cognitive issues. Even with ERT, people with Hunter syndrome face life-limiting symptoms and a significantly reduced life span.
The University of Manchester will sponsor the investigator-led Phase 1-2 clinical trial for Hunter syndrome which is expected to begin in 2021. The Hunter syndrome program was developed by Brian Bigger, a professor of cell and gene therapy at The University of Manchester. Professor Bigger has published preclinical data demonstrating that the introduction of the transgene with an optimised, proprietary tag has the ability to correct peripheral disease and normalise brain pathology.
Primary investigators for the clinical trial will be; Professor Robert Wynn, Consultant Paediatric Hematologist at the Royal Manchester Childrens Hospital and Dr. Simon Jones, Consultant Paediatric Physician for inherited metabolic diseases at the Willink Unit, Saint Marys Hospital and the Manchester Centre for Genomic Medicine.
We feel an enormous urgency to bring forward a treatment that may halt this deadly disease in its tracks, before symptoms emerge and before children lose their physical and cognitive skills, said Professor Bigger. We are delighted to be working with AVROBIO on this program. Both of our teams have deep experience running international clinical trials in other lysosomal disorders. AVROBIO also has a leading gene therapy platform, plato, which is designed to optimise the consistency, predictability and efficacy of its gene therapies and to enable efficient scaling for worldwide commercialization. By working together, we believe we can greatly accelerate development of this important program.
The investigational gene therapy, which will be called AVR-RD-05, involves ex vivo transduction of the patients own hematopoietic stem cells with a therapeutic transgene designed to express functional enzyme the patient needs to maintain cellular health, coupled to a proprietary protein tag that is designed to improve stability of the enzyme in the bloodstream and facilitate uptake by tissues from head to toe. When reinfused into the patient, the gene-modified stem cells are expected to engraft in the bone marrow and produce generations of daughter cells, each carrying the transgene. Those daughter cells are then expected to differentiate into macrophages, microglia and other components of the immune system and circulate throughout the body and central nervous system, potentially enabling widespread distribution of functional enzyme.
Geoff MacKay, AVROBIOs president and CEO said: The lentiviral gene therapy approach is well suited to treat a progressive and pervasive disease such as Hunter syndrome, which affects organs throughout the body and severely impairs cognitive function. If we treat children early, before their symptoms arise, we hope to prevent the tragic complications that rob these young children of their futures.
We believe our deep experience with investigational gene therapies for lysosomal disorders will enable us to efficiently move the program through clinical development in collaboration with Professor Brian Bigger, who has done tremendous work to develop and optimize this investigational gene therapy. Were proud to add this program to our leading lysosomal disorder pipeline and excited about its potential to change the lives of patients and families living with Hunter syndrome.
The University of Manchesters technology transfer office, The University of Manchester Innovation Factory and AVROBIO have negotiated the exclusive, worldwide license to the technology. Under the terms of the license, AVROBIO will pay The University of Manchester an upfront cash payment and additional payments based on the achievement of development and regulatory milestones. The company will pay The University a mid-single digit percentage royalty on annual net sales of licensed products. Additionally, under the collaborative research funding agreement, AVROBIO will cover budgeted clinical trial costs.
Andrew Wilkinson, CEO of the Universitys technology transfer company, The University of Manchester Innovation Factory said: We are delighted that AVROBIO will be working with teams from The University of Manchester and The University of Manchester Foundation Trust to develop a therapy for this debilitating genetic disease. AVROBIOs strategic focus on bringing new personalised gene therapies to the world along with their technical and commercial expertise in this area make them an excellent partner for the investigational Hunter syndrome gene therapy programme.
About Hunter syndrome
Hunter syndrome, also known as mucopolysaccharidosis type II (MPS II), is a lysosomal disorder caused by a mutation in the IDS gene that leads to a deficiency of the lysosomal enzyme iduronate-2-sulfatase (IDS), which is essential for breaking down large sugar molecules called glycosaminoglycans (GAGs, also known as mucopolysaccharides). Without functional IDS, toxic levels of GAGs build up throughout the body and central nervous system, causing a wide range of symptoms including cognitive decline and cardiac and respiratory dysfunction. The current standard of care is weekly enzyme replacement therapy, which may delay some symptoms but does not halt the overall progression of disease and does not cross the blood-brain barrier, an intricate web of protective tissue that selectively prevents macromolecules from entering the brain. Even with treatment, people with Hunter syndrome face life-limiting symptoms and a significantly reduced life span. The disorder affects an estimated 1 in 100,000 males worldwide; about two-thirds of cases have an early, severe progressive form.
About lentiviral gene therapy
Lentiviral vectors are differentiated from other delivery mechanisms because of their large cargo capacity and their ability to integrate the therapeutic gene directly into the patients chromosomes. This integration is designed to maintain the therapeutic genes presence as the patients cells divide, which potentially enables dosing of pediatric patients, whose cells divide rapidly as they grow. Because the therapeutic gene is integrated using the vector into patients own stem cells, patients are not excluded from receiving the investigational therapy due to pre-existing antibodies to the viral vector.
About The University of Manchester
The University of Manchester is a member of the prestigious Russell Group and one of the UKs largest single-site universities.
We have over 40,000 students, 12,000 staff and, with almost 480,000 former students from more than 190 countries, are home to the largest alumni community of any campus-based university in the UK. No fewer than 25 Nobel laureates have either worked or studied here.
We are thetop UK University for graduate employabilityaccording to The Times and Sunday Times Good University Guide; ranked 27th in the world in the QS World University Rankings (2020) and 6th in the UK. Were also listed as 8th in Reuters Top 100: Europe's most innovative universities (2019).
Visit http://www.manchester.ac.uk for further information or https://www.manchester.ac.uk/discover/vision/ for our latest strategic vision.
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