Clinical trial Recruiting at 14 sites Observational

Registry for rare histiocytic disorders

Official title: International Rare Histiocytic Disorders Registry (IRHDR)

Run by The Hospital for Sick Children · NCT02285582 · Data updated 2026-11-12

This study is gathering information from people of all ages with rare histiocytic disorders to help improve diagnosis and treatment options.

Quick facts

Study typeObservational
SexAll
Enrollment400 (estimated)
SponsorThe Hospital for Sick Children
Academic / other
Locations15 sites (Birmingham, Alabama and 14 other locations)
StatusRecruiting
StartedOctober 2014
Main results expectedSeptember 2028
Study endsSeptember 2028
Registry record updatedJune 24, 2025
Trial IDNCT02285582 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals of any age diagnosed with a rare histiocytic disorder, with suitable pathology samples available for review.

Probably not a fit

Patients without a confirmed diagnosis of a rare histiocytic disorder or those lacking a pathology sample for review may not benefit from this registry.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The International Rare Histiocytic Disorders Registry (IRHDR) aims to collect and analyze clinical, epidemiological, treatment, and survival data for patients diagnosed with rare histiocytic disorders. This observational registry will facilitate uniform diagnosis and provide a framework for future therapeutic recommendations. It includes patients of any age with a confirmed diagnosis of a rare histiocytic disorder, allowing for the inclusion of historical cases dating back to 1995. The registry will also offer expert pathology reviews to enhance understanding and management of these conditions.

Why it matters

Potential benefit: If successful, this registry could lead to improved diagnosis and treatment recommendations for patients with rare histiocytic disorders.

How similar studies have gone: While the approach of creating a registry for rare diseases is not novel, the specific focus on rare histiocytic disorders is relatively untested, highlighting the need for this initiative.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Any age at diagnosis.
2. Diagnosis of a rare histiocytic disorder, established before or after the opening of the registry.
3. Cases diagnosed from January - 01- 1995 until the present time and prospectively.
4. Signed informed consent by a patient, or parent/legal guardian.
5. Cognitively impaired patients can be included after consent by legal guardian/parent.
6. Deceased patients can be included if they are contacted at least 6 months after the death of their child and not on their child's birthday or anniversary of death.

Exclusion Criteria:

1. Informed consent has not been signed.
2. Diagnosis other than RHD.
3. Cases diagnosed before the year 1995.

Where it's running

  • The University of Alabama at Birmingham
    Birmingham, Alabama, United States
    Recruiting
  • Children's Hospital of Los Angeles
    Los Angeles, California, United States
    Recruiting
  • Valley Children's Hospital
    Madera, California, United States
    Recruiting
  • Dana-Farber Cancer Institute
    Boston, Massachusetts, United States
    Recruiting
  • Memorial Sloan Kettering Cancer Center
    New York, New York, United States
    Recruiting
  • University of Pittsburgh Medical Center
    Pittsburgh, Pennsylvania, United States
    Recruiting
Show 9 more locations
  • Hospital Nacional de Pediatria Garrahan
    Buenos Aires, Argentina
    Recruiting
  • The Hospital for Sick Children
    Toronto, Ontario, Canada
    Recruiting
  • University Hospital Brno
    Brno, Czechia
    Recruiting
  • Rostock University Medical Hospital
    Rostock, Germany
    Recruiting
  • Azienda Ospedaliero-Universitaria Meyer
    Florence, Italy
    Recruiting
  • Prinses Maxima Center
    Utrecht, Cs, Netherlands
    Recruiting
  • Children's Memorial Health Institute
    Warsaw, Poland
    Recruiting
  • Hospital Universitario Cruces
    Barakaldo, Spain
    Recruiting
  • Centre hospitalier universitaire Sainte-Justine
    Montreal, Quebec, Canada
    Active not recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.