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NCT04398628 · ClinicalTrials.gov record · last posted 2026-08-17

ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders

StatusRecruiting
PhaseNot specified
Started2020-09-30
View on ClinicalTrials.gov ↗
from the ClinicalTrials.gov record
In parallel with the growth of ATHN's clinical studies, the number of new therapies for all blood disorders is increasing significantly. Some of the recently FDA-approved therapies for congenital and acquired hematologic conditions have not yet demonstrated long-term safety and effectiveness beyond the pivotal trials that led to their approval. In addition, results from well controlled, pivotal studies often cannot be replicated once a therapy has been approved for general use.2,3,4,5 In 2019 alone, the FDA has issued approvals for 24 new therapies for congenital and acquired hematologic conditions.6 In addition, almost 10,000 new studies for hematologic diseases are currently registered on www.clinicaltrials.gov.7 With this increase in potential new therapies possible, it is imperative that clinicians and clinical researchers in the field of non-neoplastic hematology have a uniform, secure, unbiased, and enduring method to collect long-term safety and efficacy data. As emphasized in a recently published review, accurate, uniform and quality national data collection is critical in clinical research, particularly for longitudinal cohort studies covering a lifetime of biologic risk.8

Protocol amendment history 1 change detected by DataLookout

2026-08-18
minor
Trial sites expanded: 71 → 76 locations
Trial Details
NCT Number NCT04398628
Lead Sponsor American Thrombosis and Hemostasis Network
Collaborators: Pfizer, Hemophilia of Georgia, Inc., Genentech, Inc., CSL Behring, Sanofi, Novo Nordisk A/S, Hemab ApS
Conditions Hematologic Disorder, Bleeding Disorder, Connective Tissue Disorder, Hemophilia, Thrombosis, Von Willebrand Diseases, Thrombophilia, Rare Bleeding Disorder +5 more
Enrollment 3,000 participants
Start Date 2020-09-30
Primary Completion 2035-06 (estimated)
Study Completion 2035-12 (estimated)
Updated on ClinicalTrials.gov 2026-08-17