[Orphan drugs and drug pirates].

The European Orphan Medicines Regulation, which came into effect in 2000, stimulates the development of medicines for rare diseases. The number of registered orphan medicines has increased from eight in 2000 to 169 in 2019; 38% of these are available in the Netherlands. The costs for orphan medicines in the Netherlands are increasing by 9% every year, and now amount to €272 million annually.