The NIH Undiagnosed Diseases Network (UDN) was expanded last year to include seven centers at locations across the United States. The UDN brings together clinical and research experts from across the US to solve the most challenging medical mysteries using advanced technologies. It is funded by the NIH Common Fund, and at a recent public forum to discuss continuation of funding, a NORD representative spoke about the importance of this network to rare disease patients and their physicians. Any patient can apply to the network with support from his/her physician. Application is made through an online NIH UDN portal.