National Institutes of Health
- The primary NIH organization for research on Rare Diseases is the NIH Office of Rare Diseases
A disease is rare if fewer than 200,000 people in the United States have it. There are close to 7,000 rare diseases and about 25 million people in the U.S. have one. Many rare diseases are caused by changes in genes and are called genetic diseases.
NIH: National Institutes of Health Office of Rare Diseases
References and abstracts from MEDLINE/PubMed (National Library of Medicine)