Fact Sheet

Spurring Innovation in Rare Diseases

2017 Update

PhRMA February 24, 2017

Although rare diseases each may individually only impact a relatively small number of patients, defined as less than 200,000 in the United States, their impact on public health is far-reaching. While the median number of patients with each rare disease is less than 10,000, rare diseases affect 30 million Americans – about 1 in 10.