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‹ Tue · 7 Jul 2026
Underserved or high-risk populations

Discordance in orphan drug approvals between the U.S. Food and Drug Administration and the European Medicines Agency: A retrospective observational analysis.

BACKGROUND: The United States (US) and European Union (EU) have long-established orphan drug regulations to incentivise the development of medicines for rare diseases. Our findings suggest that orphan incentives are not the primary driver of commercial EU-launch decisions and that recent EU regulatory reform of these incentives may not achieve their goal of improving access to therapy for rare diseases.

BACKGROUND: The United States (US) and European Union (EU) have long-established orphan drug regulations to incentivise the development of medicines for rare diseases. Our findings suggest that orphan incentives are not the primary driver of commercial EU-launch decisions and that recent EU regulatory reform of these incentives may not achieve their goal of improving access to therapy for rare diseases.

What the study was

Study design
Retrospective study
Category
Drug Development
Maturity
Validated
Journal
PLoS medicine

Why it surfaced

Relevant Rare diseases with high unmet need study (high-unmet-need population coverage) meets standard-priority threshold.

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