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

> **NCT04398628** · — · RECRUITING · sponsor: **American Thrombosis and Hemostasis Network** · enrollment: 3000 (estimated)

## Conditions studied

- Hematologic Disorder
- Bleeding Disorder
- Connective Tissue Disorder
- Hemophilia
- Thrombosis
- Von Willebrand Diseases
- Thrombophilia
- Rare Bleeding Disorder
- Platelet Disorder
- Factor IX Deficiency
- Factor VIII Deficiency
- Thalassemia
- Sickle Cell Disease

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04398628
- **Lead sponsor:** American Thrombosis and Hemostasis Network
- **Sponsor class:** NETWORK
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-09-30
- **Primary completion:** 2035-06
- **Final completion:** 2035-12
- **Target enrollment:** 3000 (ESTIMATED)
- **Last updated:** 2026-01-12

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04398628

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04398628, "ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04398628. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*