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Established renal failure (ERF) in children and young adults is considered a rare disease. Single country data may be underpowered to show any differences or effects of treatment and therefore cooperation between countries is essential to improve the outcome of children with ERF. Until 2007 data collection on children and young adults on renal replacement therapy (RRT) in Europe was limited to that of the European Renal Association–European Dialysis and Transplant (ERA–EDTA) Registry. Within the ERA–EDTA Registry data are collected from national and regional renal registries. As these do not always include paediatric patients, data on children have only been available from a limited part of Europe. The first publication on paediatric patients by the Amsterdam-based ERA–EDTA Registry included data on 3184 patients (aged 0–19 years) from 12 registries in 11 countries, covering a total general population of 80.3 million, who started RRT between 1980 and 2000 [1]. Information was presented on incidence, prevalence, primary renal disease, age at onset of RRT, type of treatment and survival. The data demonstrated an almost 3-fold increase in the prevalence of ERF over 20 years, from 22.9 per million age related population (pmarp) in 1980 to 62.1 pmarp in 2000. The incidence rose from 7.1 pmarp in the 1980–84 cohorts to 9.9 pmarp in the 1985–89 cohorts but then remained stable. In the early cohort haemodialysis was the most common form of first treatment modality, but by 1995–2000 peritoneal dialysis and pre-emptive transplant were increasingly used. Over the 20 years studied the relative risk of death for patients starting dialysis or following their first transplant reduced by 36% and 42%, respectively.  A paper on the characteristics and survival of young adults who started RRT during childhood has recently been published [2], and a further study on the effect of timing of transplantation is in progress. In addition, an international study comparing survival between children on haemodialysis and peritoneal dialysis is running in collaboration with other large registries including the USRDS and ANZDATA [3].  Since 2004 preparations have been made for a more comprehensive registry specifically focusing on children, the European Society for Paediatric Nephrology (ESPN)/ERA–EDTA Registry. It was decided that the data collection on children should be expanded not only to include more countries but also to collect much more detailed data on different aspects of ERF management. Initially, established registries from the larger countries were compared to see if a common database could be developed. A paediatric sub-committee of the ERA–EDTA Registry committee was set up to further develop the paediatric aspects of the Registry. This led to a comparison of UK and Italian data that was presented at the ERA–EDTA meeting in Lisbon in ‘Auditing and Advancing Paediatric RRT’. This comparison demonstrated that these two countries not only had very similar populations of children with ERF, but there was also evidence of differences in management, for example of haemodialysis access and time to transplantation. In 2005, with the inclusion of patients from the UK, Italy and Turkey, the total number of incident patients under the age of 15 reported to the ERA–EDTA Registry increased from 2009 to 4280 and details were reported at the ESPN meeting in Istanbul 2005 in ‘The new paediatric EDTA database’.  At the same time the ERA–EDTA Registry set out to develop the QUEST (QUality European STudies) initiative [4]. The aim of this initiative is to identify comparable indicators to assess the quality of RRT care among European countries, with the aim of improving outcome across Europe. One of the ways of reaching that objective is to develop and standardize clinical performance indicators to be used for (inter)national benchmarking. Together with national renal registries and societies the ERA–EDTA Registry applied to the European Union for a grant, under the name of NephroQUEST, which was subsequently awarded in 2007. The project was officially launched at a meeting in Amsterdam in November 2007 [5]. It is hoped that this project will support the development of the infrastructure required for data collection in countries without this facility that will then be of benefit to both children and adults with renal failure. The NephroQUEST grant has also provided co-funding for the employment of a part-time dedicated epidemiologist, for the paediatric registry, for 3 years. Contributions to the funding for this post have also been provided by the ERA–EDTA and the ESPN for this period and action is now required to secure long-term funding.

Progress with the European Society for Paediatric Nephrology (ESPN)/ERA-EDTA Registry for children with established renal failure (ERF)