What makes a rare disease rare
In the European Union a disease is considered rare when it affects fewer than one in 2,000 people. In the US, the figure is fewer than 200,000 people affected by a disease at any given time.
Overall, there are around 7,000 rare diseases, which, collectively, affect more people than cancer.
Worldwide over 350 million people live with a rare disease and the vast majority are children.
Rare diseases have a huge impact on individuals, their families and…