Blue Matter Blog

Rare diseases
Addressing the Special Commercial Challenges in Rare Diseases
March 29, 2018

Part 1 in a Series on Rare Diseases In the European Union, a disease is defined as rare when it affects fewer than five in 10,000 people.  In the United States, the definition is similar:  fewer than seven in 10,000 people.1 For the people affected by rare diseases—and the physicians who treat them—the official definition …