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Congenital disorders are causes of major morbidity and mortality worldwide. Using autozygosity mapping in a local community of Pakistani origin who have high rates of inherited recessive disorders due to consanguineous unions, we have identified more than 30 novel disease genes. Isolating these previously unknown molecular defects has enabled us to develop key diagnostic assays, subsequently provided by clinical laboratories globally. Our work has provided thousands of patients with a definitive diagnosis, removing the need for complex clinical testing. Those affected can be offered focused management and early therapeutic intervention as well as carrier and prenatal testing for themselves and family members. Our findings also provide new research opportunities for previously undefined diseases.
Research at the UCL Institute of Ophthalmology over the last 20 years has resulted in the identification of a large number of novel genes that cause inherited retinal disease. These genes have been incorporated into diagnostic tests, which have allowed molecular diagnosis, improved genetic counselling including pre-natal/pre-implantation diagnosis, better information about prognosis and have informed decisions about which diseases should be prioritised for clinical trials of novel treatments. The identification of these genes has greatly improved understanding of disease mechanisms, an essential prerequisite for developing new treatment approaches such as gene therapy.
Our research has had impact on the activities of practitioners and their services, health and welfare of patients, on society and on public policy. New diagnostic tests for genetic deafness have been introduced, and healthcare guidelines and professional standards adopted through our investigation of the aetiology of childhood-onset hearing loss. Disease prevention has been achieved by our research on antibiotic-associated deafness, public awareness of risk to health and hearing has been raised, and we have increased public engagement through debate on scientific and social issues. We have also influenced public policy on ethics of genetic testing for deafness with our research resulting in improved quality, accessibility and acceptability of genetic services among many hard-to-reach groups (deafblind, culturally Deaf, and the Bangladeshi population of East London).
Research at the Centre for Cutaneous Research at Queen Mary has led to gene discovery and molecular diagnosis for a number of single gene skin disorders and associated syndromes including hearing loss, inflammatory bowel disease, cardiomyopathy and oesophageal cancer. It has identified GJB2 mutations (encoding Cx26) as major cause of genetic hearing loss (20-50% of all cases) and ABCA12 mutations with the (often fatal) recessive skin condition Harlequin Ichthyosis. Impacts include: 1) increased medical and scientific awareness/knowledge of the inherited basis of these conditions, 2) changes in clinical practice and molecular diagnosis, 3) improved information for patients, parents and the public.
Research from the University of Oxford's Clinical Genetics Laboratory initiated the introduction of an upper age limit of 40 years for sperm donors in the UK and internationally and led to increased public awareness of the effect of paternal age in the transmission of inherited disease. Oxford researchers, led by Professor Andrew Wilkie, were the first to describe the exclusively paternal transmission of de novo mutations, in a rare craniofacial disorder called Apert Syndrome; they also showed that the accumulation of such mutations leads to a disproportionate risk of disease transmission with age. By showing that the frequency of mutations increases with paternal age, this research contributed to important changes in clinical practice relating to sperm donation. This has also had a significant cultural impact, as the research and its clinical outcomes have challenged public perceptions of paternal age.
Although individually infrequent, rare diseases collectively are a major health burden, particularly for individuals who suffer with conditions that are not routinely diagnosed or have no effective care pathways. Through the work of Professor Tim Barrett, the University of Birmingham is internationally recognised for translational research in rare inherited diabetes and obesity syndromes. This has had major impacts on patient care through gene identification for devastating multi-system syndromes; development of a unique international diagnostic testing service combining molecular testing with international clinical expertise; European reference centre status for three NHS highly specialised multidisciplinary services; and leadership of the European Registry for rare diabetes syndromes. Our national and international leadership for these previously poorly-served conditions has enabled sharing of best clinical practice, including development of clinics for Wolfram syndrome across the world.
Diagnostic tests have been successfully developed for identification of the cause of erythrocytosis, particularly in patients with unexplained forms of this rare disease. A diagnostic service with worldwide reach was developed for the genetic characterisation of patients that carry mutations identified by the Queens's group. It deals with approximately 100 samples per year referred for investigation for this rare disease from the UK, Europe and further afield. Proper diagnosis helps in management of patients with erythrocytosis where the problem is not mutation in one of the familiar causative genes. A pan-European web-based database has been established to collect information on long-term outcomes to inform patient management.
As a result of research from Oxford's Professor Andrew Wilkie, accurate genetic diagnostic tests are now available for over 23% of all craniosynostosis cases nationally and internationally, leading to improved family planning and clinical management of this common condition worldwide. The premature fusion of cranial sutures, known as craniosynostosis, is a common developmental abnormality that occurs in 1 in 2,500 births. Over the past 20 years, the University of Oxford's Clinical Genetics Lab, led by Professor Wilkie in collaboration with the Oxford Craniofacial Unit, has identified more than half of the known genetic mutations that cause craniosynostosis and other malformations of the skull.
Identification of MUTYH by researchers at Cardiff University as the first gene causing autosomal recessive colorectal cancer led to international adoption of MUTYH genetic testing in the management of familial colorectal cancer and thereby to global improvement in genetic counselling and colorectal cancer prevention. Since 2008 MUTYH gene testing has been introduced progressively and is now provided by at least 84 European state and commercial diagnostic laboratories. Commercialisation of testing in North America via a licence to Myriad Genetics Inc. generated income of approximately $5M between 2008 and 2011 and licence fees and royalties to date of £331,947. Thus we claim impacts in health and commercial benefit, the financial beneficiaries being Myriad Genetics and Cardiff University.
Research at the UCL School of Pharmacy has positively influenced healthcare in startle disease/hyperekplexia, a rare disease that affects humans and several animal species, including dogs, horses and cattle. The identification and functional characterisation of mutations in genes involved in human startle disease by researchers at the School has improved genetic diagnostics and patient care. Our research on startle disease in cattle and dogs has also led to new non- invasive diagnostic tests that have alleviated animal suffering and reduced negative economic impacts on farmers. Overall, our findings have been translated into tangible benefits for the human and animal populations affected by this disease and have changed the way in which the disease is diagnosed and treated. We have also significantly increased the awareness of this rare disorder by communicating with academics, healthcare and veterinary professionals, and the general public.