In the USA, the Office of Rare Diseases Research (ORDR) of the National Institutes of Health, in collaboration with Patient Crossroads, Children Hospital of Philadelphia, and WebMD, has launched a two-year pilot programme to establish a Global Rare Diseases Patient Registry and Data Repository (GRDR) that will gather anonymised patient clinical information that can serve many different strands of the rare disease and orphan drug community – including research, clinical care, epidemiology, advocacy, and information. The GRDR “… will establish a common data repository for studying rare diseases by aggregating patient information from multiple registries based on a library of common data elements. By including any participating registry, the repository enables cross-disorder analysis which may result in non-obvious research correlations as well as providing a larger patient population for recruiting into trials”.