National registry study on adult pulmonary Langerhans cell histiocytosis

Enquête épidémiologique Sur la prévalence et le Pronostic de l'Histiocytose Langerhansienne Pulmonaire de l'Adulte en France

Observational Assistance Publique - Hôpitaux de Paris · NCT04665674

This study looks at the long-term health and survival of adults with pulmonary Langerhans cell histiocytosis to see what factors might affect their outcomes.

Quick facts

Study typeObservational
Enrollment500 (estimated)
Ages18 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations1 site (Paris)
Trial IDNCT04665674 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the long-term outcomes, particularly survival, of adult patients diagnosed with pulmonary Langerhans cell histiocytosis (PLCH). It is the first prospective cohort study in this field, utilizing a nationwide registry in France to gather data from a large cohort of PLCH patients. Participants will be followed over an extended period to identify risk factors that influence long-term outcomes. The study will rely on standard care interventions while focusing on observational data collection.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 years and older with a confirmed diagnosis of pulmonary Langerhans cell histiocytosis.

Not a fit: Patients with alternative diagnoses or those under 18 years of age may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term prognosis and management of patients with pulmonary Langerhans cell histiocytosis.

How similar studies have performed: This study is novel as it is the first prospective evaluation of long-term outcomes in PLCH patients, and similar studies in other histiocytosis conditions have shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age \>= 18 years
* Diagnosis of PLCH was either histologically confirmed on a biopsy of an involved tissue, or based on the combination of the following criteria: 1) an appropriate clinical picture; 2) a typical nodulo-cystic pattern on lung high-resolution computed tomography (HRCT) and 3) exclusion of alternative diagnoses

Exclusion Criteria:

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Where this trial is running

Paris

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HistiocytosisHistiocytosis, Langerhans-CellHistiocytosis Pulmonary
Last reviewed 2026-06-13 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.