The NEJM has reported the NIH's Undiagnosed Diseases Network (UDN) study results of genetically identifying new diseases from prospectively followed persons with undiagnosed disorders.
The UDN was formed in 2014 as a network of seven clinical sites, two sequencing cores, a coordinating center, central biorepository, a metabolomics core, and a model organisms screening center. It was established to apply a multidisciplinary model in the evaluation of the most challenging cases and to identify the biologic characteristics of newly discovered diseases.