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Fig. 4 | Orphanet Journal of Rare Diseases

Fig. 4

From: Using four decades of FDA orphan drug designations to describe trends in rare disease drug development: substantial growth seen in development of drugs for rare oncologic, neurologic, and pediatric-onset diseases

Fig. 4

Count of FDA orphan drug designations within therapeutic area by decade, 1983—2019. Only top five therapeutic areas with greater than 250 total designations were included in Fig. 4. Please see the Additional file 2: Table for a full presentation of the trends within therapeutic area over time

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