- Conditions
- Rare Histiocytic Disorders (RHDs), Erdheim-Chester Disease (ECD), Rosai-Dorfman Disease (RDD), Xanthogranuloma Family (XG), Indeterminate Dendritic Cell Histiocytosis, Malignant Histiocytic Neoplasm (MHN), ALK-positive Histiocytosis, Mixed Histiocytosis (MXH), Multicentric Reticulohistiocytoma (MRH), Necrobiotic Xanthogranuloma (NX)
- Interventions
- Registry study
- Other
- Lead sponsor
- The Hospital for Sick Children
- Other
- Eligibility
- Not listed
- Enrollment
- 400 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2028
- U.S. locations
- 6
- States / cities
- Birmingham, Alabama • Los Angeles, California • Madera, California + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2025 · Synced May 22, 2026, 5:48 AM EDT