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Tracking trials across 3,281 rare diseases
Ranked by the number of recruiting, active, and enrolling trials linked to each disease on ClinicalTrials.gov. Trial associations are condition-matched, not keyword-searched. Updated every 4 hours — as new trials open or close, rankings shift automatically.
cystic fibrosis
199 active trials
amyotrophic lateral sclerosis type 1
152 active trials
Duchenne muscular dystrophy
111 active trials
aortic aneurysm, familial abdominal, 1
102 active trials
cardiogenic shock
94 active trials
thrombophilia due to thrombin defect
92 active trials
familial meningioma
89 active trials
idiopathic aplastic anemia
82 active trials
acquired polycythemia vera
74 active trials
pulmonary fibrosis and/or bone marrow failure, Telomere-related, 2
73 active trials
gastrointestinal stromal tumor
68 active trials
bronchopulmonary dysplasia
65 active trials