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Adult Pulmonary Langerhans Cell Histiocytosis: a National Registry-based Prospective Cohort Study

Study Purpose

The long-term outcomes of adult patients with pulmonary Langerhans cell histiocytosis (PLCH), particularly survival, is largely unknown. This is the first prospective study in the field evaluating the long-term outcomes of PLCH patients. This french countrywide registry-based study included a large cohort of PLCH patients followed for a sufficiently long period to address risk factors of long-term outcomes of PLCH patients.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Observational [Patient Registry]
Eligible Ages 18 Years and Over
Gender All
More 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:


Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Assistance Publique - Hôpitaux de Paris
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Recruiting
Countries France

The disease, disorder, syndrome, illness, or injury that is being studied.

Histiocytosis, Histiocytosis, Langerhans-Cell, Histiocytosis Pulmonary
Arms & Interventions


: Pulmonary Langerhans cell histiocytosis (PLCH)

All patients with newly diagnosed PLCH at adulthood (i.e. 18 years of age or older) referred to the French national reference centre for Histiocytoses


Other: - Standard of care

Standard of car of pulmonary Langerhans cell histiocytosis (PLCH)

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

International Sites

Paris, France




French national reference centre for Histiocytoses

Paris, , 75010

Site Contact

Abdellatif TAZI, MD PhD


142499198 #33