APRT Deficiency – RDG
- Aims of the Group
1. To collect clinical data on patients with APRT Deficiency in a Registry. This will allow us to:
- study the causes, natural history and outcome of the condition
- develop patient cohorts for future studies
2. To collect biological samples for future studies in a Biobank. This will allow us to:
- identify factors influencing the course of APRT Deficiency
- determine the role of various genes
3. To develop new methods to measure urinary purine excretion. This will improve tools that allow us to:
- study the effectiveness of pharmacological and dietary interventions
- identify factors influencing the course of the condition
4. To work with patient organisations, health care professionals and researchers:
- to enhance the education and training aspect of this project
- to develop strategies to increase the awareness and early detection of APRT Deficiency and improve patient outcomes
- Current Activities
1. Enrolling patients into RaDaR
Analysis of data from international registries has led to the publication of review papers and the development of diagnostic guidelines. These may be refined with the inclusion of UK data.
2. Improving ways of measuring DHA
Our Icelandic colleagues have been developing a way to measure DHA in the urine to help diagnose APRT Deficeincy and monitor drug therapy.
3. Conducting a pilot study with APRT Deficiency patients
We are comparing the effect of two different drugs (allopurinol and febuxostat) and dietary modification on urinary DHA excretion.
- International Links
Because APRT Deficiency is such a rare condition, we aim to collaborate extensively with colleagues based in Iceland and the USA in order to achieve the aims of the group. Details of these collaborations can be found on the Rare Kidney Stone Consortium website.
- Patient Support Groups
The APRT Deficiency Support Network aims to increase awareness of all aspects of this underreported disease including its symptoms, diagnosis, available treatment options and current scientific research. Its website connects patients and relatives of those with APRT Deficiency to provide support and practical advice.
Poster presented at UK Kidney Week, 2017 – APRT Deficiency – A Rare disease that should not be forgotten in renal failure of unknown cause, Lowe, M. & Lipkin, G.
Abstract presented at Renal Association Meeting, 2014 – Adenine Phosphoribosyltransferase Deficiency: Two Novel Genetic Mutations and United Kingdowm Experience, Balasubramaniam, G. et al.
Thorsteinsdottir M et al (2016). Quantitative UPLC–MS/MS assay of urinary 2,8-dihydroxyadenine for diagnosis and management of adenine phosphoribosyltransferase deficiency. Journal of Chromatography B, Volumes 1036–1037, pages 170–177.
- Group Members
- Dr Mike Almond, Southend University Hospital
- Dr Vidar Edvardsson, Associate Professor of Pediatrics, Landspitali University Hospital, Reykjavik, Iceland
- Dr Lynette Fairbanks, Biochemist, Guy’s Hospital, London
- Gudbrandur Gudmundsson, Patient Representative
- Dr Sally Hulton, Paediatric Nephology Consultant, Birmingham Children’s Hospital
- Mr Waseem Iqbal, Patient Representative
- Mrs Alison Montgomery, Patient Representative
- Dr Shabbir Moochhala, Royal Free Hospital, London RDG Lead
- Dr Runolfur Palsson, Associate Professor of Medicine, Landspitali University Hospital, Reykjavik, Iceland
- Dr Gill Rumsby, Biochemist, University College London
- Dr Daron Smith, Urologist, University College Hospital, London
- Michelle Smith, Clinical Nurse Specialist, University Hospital Birmingham
- Disclosure of Conflicts of Interest
Written by the APRT-Deficiency Rare Disease Group