# A Longitudinal Study of Familial Hypereosinophilia (FE): Natural History and Markers of Disease Progression

> **NCT00091871** · — · RECRUITING · sponsor: **National Institute of Allergy and Infectious Diseases (NIAID)** · enrollment: 50 (estimated)

## Conditions studied

- Eosinophilia
- Hypereosinophilic Syndrome

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT00091871
- **Lead sponsor:** National Institute of Allergy and Infectious Diseases (NIAID)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2005-06-08
- **Primary completion:** —
- **Final completion:** —
- **Target enrollment:** 50 (ESTIMATED)
- **Last updated:** 2026-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00091871

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00091871, "A Longitudinal Study of Familial Hypereosinophilia (FE): Natural History and Markers of Disease Progression". Retrieved via AI Analytics 2026-09-01 from https://api.ai-analytics.org/clinical/NCT00091871. Licensed CC0.

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