Medical researchers are pooling their data to find diagnoses and cures for patients with extremely rare and sometimes undiscovered diseases.
You probably haven’t heard of a disease called arterial calcification due to deficiency of the CD73 enzyme, which causes painful calcium buildup in the joints and blood vessels. Discovered in 2011 through the Undiagnosed Disease Program (UDP) at the U.S. National Institutes of Health, only a handful of individuals are believed to suffer from the disease, which is also known as ACDC.
