Pulmonary Langerhans Cell HistiocytosisHLPNCT01651507
Evaluation of Outcome of Adult Pulmonary Langerhans Cell Histiocytosis Based on Lung HRCT and Lung Function
An observational study of Pulmonary Langerhans Cell Histiocytosis, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
Trial summary
this is a multicenter retrospective study on patients with pulmonary LCH who were sequentially evaluated by concomitant lung HRCT and lung function testing. The objectives of this study were: 1) to determine the changes over time of lung function parameters in patients with pulmonary LCH; 2) to compare the variations… Read more about this study
- Who is it for?
- Ages 14 years and older
- Conditions the study is for
- Pulmonary Langerhans Cell Histiocytosis
- How many people
- 49 participants
- Where
- 1 siteFrance
- Study dates
- Jun 1989to Sep 2010
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 14 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: * Patients with pulmonary LCH * enrolled in eight teaching hospitals * evaluated between June 1989 and February 2005
Who may be able to join
- pulmonary HLP diagnosed between June 1989 and February 2005
Who cannot join
- followed up for less than 6 months
- with less than 2 lung HRCT and lung function tests at the same time or within a 2 month period
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Evaluation of Outcome of Adult Pulmonary Langerhans Cell Histiocytosis Based on Lung HRCT and Lung Function. A Multicenter Retrospective Study
this is a multicenter retrospective study on patients with pulmonary LCH who were sequentially evaluated by concomitant lung HRCT and lung function testing. The objectives of this study were: 1) to determine the changes over time of lung function parameters in patients with pulmonary LCH; 2) to compare the variations of HRCT and lung function results during follow-up; 3) to address the respective interest of these investigations for identifying the patients who eventually will experience a progression of their disease.
Read the detailed description
Pulmonary Langerhans cell histiocytosis (pulmonary LCH) is an uncommon disorder, characterized by the accumulation of CD1a+ Langerhans cells (LCs) organized in granulomas that develop in, and destroy the wall of distal bronchioles. In adults the disease occurs predominantly in young smokers from both genders, with a peak incidence at 20-40 yrs of age, although female may be slightly older. High resolution computed tomography (HRCT) of the lung has provided a considerable input for the diagnosis of pulmonary LCH.
We conducted a multicenter retrospective study on patients with pulmonary LCH who were sequentially evaluated by concomitant lung HRCT and lung function testing. The objectives of this study were: 1) to determine the changes over time of lung function parameters in patients with pulmonary LCH; 2) to compare the variations of HRCT and lung function results during follow-up; 3) to address the respective interest of these investigations for identifying the patients who eventually will experience a progression of their disease. Results of this study may help to improve the management of patients with adult pulmonary LCH.
- Conditions
- Pulmonary Langerhans Cell Histiocytosis
- Keywords
- Pulmonary Langerhans cell histiocytosis
- Medical subject headings
- Histiocytosis, Langerhans-Cell
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| HLP | Patients with pulmonary LCH from eight teaching hospitals evaluated between June 1989 and February 2005 were considered for this study, if they were followed for at least 6 months and evaluated by ≥ 2 lung HRCT and lung function tests at the same time or within a 2 months period |
What is being measured
The primary outcome is the main question the study is designed to answer.
Impairment of lung function
a decrease ≥10% of FEV1 or FVC, or decrease ≥15% of DLCO. Conversely, if the FEV1or FVC increased of ≥10%, or DLCO ≥15%
Measured: 5 years
obstructive pattern
FEV1/FVC ratio <70%
Measured: 5 years
restrictive pattern
TLC <80% of predicted value
Measured: 5 years
lung HRCT cystic score
The extent of cystic lesions (including thick- and thin- walled cysts) was assessed for each of the 6 defined lung areas on HRCT and classified as follows: 0 (no cyst); 1 (<25%); 2 (25-49%); 3 (50-75%) and 4 (>75%) of the lung surface analyzed. For the whole lung, the maximal value for cystic HRCT score was of 24
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Jul 2012 (estimated)
- Study startJun 1989
- Primary completionFeb 2005
- Study completionSep 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Pulmonary Langerhans Cell HistiocytosisStudies of the same condition, open and under way.
- More trials run by Assistance Publique - Hôpitaux de ParisThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Retrospective
- Enrolment
- 49 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assistance Publique - Hôpitaux de Paris
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01651507
- Sponsor's protocol ID
- HLP
- Acronym
- HLP
- Status last verified
- Sep 2010
- First submitted
- 25 Jul 2012
- Last updated
- 18 Apr 2016
- Results posted
- No
- Data monitoring committee
- No
Publications
Tazi A, Marc K, Dominique S, de Bazelaire C, Crestani B, Chinet T, Israel-Biet D, Cadranel J, Frija J, Lorillon G, Valeyre D, Chevret S. Serial computed tomography and lung function testing in pulmonary Langerhans' cell histiocytosis. Eur Respir J. 2012 Oct;40(4):905-12. doi: 10.1183/09031936.00210711. Epub 2012 Mar 22.
PubMed 22441752
Study at a glance
From the registry record, last updated by the sponsor on 18 Apr 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Outcome of Adult Pulmonary Langerhans Cell Histiocytosis Based on Lung HRCT and Lung Function. A Multicenter Retrospective Study
- ClinicalTrials.gov ID
- NCT01651507
- Acronym / sponsor ID
- HLP / HLP
- Conditions
- Pulmonary Langerhans Cell Histiocytosis
- Keywords
- Pulmonary Langerhans cell histiocytosis
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 49 participants (actual)
- Lead sponsor
- Assistance Publique - Hôpitaux de ParisUniversity, hospital or other
- Study start
- Jun 1989
- Primary completion
- Feb 2005 (actual)
- Study completion
- Sep 2010 (actual)
- First posted
- 27 Jul 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
this is a multicenter retrospective study on patients with pulmonary LCH who were sequentially evaluated by concomitant lung HRCT and lung function testing. The objectives of this study were: 1) to determine the changes over time of lung function parameters in patients with pulmonary LCH; 2) to compare the variations of HRCT and lung function results during follow-up; 3) to address the respective interest of these investigations for identifying the patients who eventually will experience a progression of their disease.
Detailed description
Pulmonary Langerhans cell histiocytosis (pulmonary LCH) is an uncommon disorder, characterized by the accumulation of CD1a+ Langerhans cells (LCs) organized in granulomas that develop in, and destroy the wall of distal bronchioles. In adults the disease occurs predominantly in young smokers from both genders, with a peak incidence at 20-40 yrs of age, although female may be slightly older. High resolution computed tomography (HRCT) of the lung has provided a considerable input for the diagnosis of pulmonary LCH.
We conducted a multicenter retrospective study on patients with pulmonary LCH who were sequentially evaluated by concomitant lung HRCT and lung function testing. The objectives of this study were: 1) to determine the changes over time of lung function parameters in patients with pulmonary LCH; 2) to compare the variations of HRCT and lung function results during follow-up; 3) to address the respective interest of these investigations for identifying the patients who eventually will experience a progression of their disease. Results of this study may help to improve the management of patients with adult pulmonary LCH.
Study design
- Observational model
- Case only
- Time perspective
- Retrospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| HLP | – | –Patients with pulmonary LCH from eight teaching hospitals evaluated between June 1989 and February 2005 were considered for this study, if they were followed for at least 6 months and evaluated by ≥ 2 lung HRCT and lung function tests at the same time or within a 2 months period |
Who may qualify
- Ages
- 14 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- * Patients with pulmonary LCH * enrolled in eight teaching hospitals * evaluated between June 1989 and February 2005
Key inclusion criteria (1 listed)
- pulmonary HLP diagnosed between June 1989 and February 2005
Key exclusion criteria (2 listed)
- followed up for less than 6 months
- with less than 2 lung HRCT and lung function tests at the same time or within a 2 month period
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Impairment of lung function
Time frame: 5 years
a decrease ≥10% of FEV1 or FVC, or decrease ≥15% of DLCO. Conversely, if the FEV1or FVC increased of ≥10%, or DLCO ≥15%
obstructive pattern
Time frame: 5 years
FEV1/FVC ratio <70%
restrictive pattern
Time frame: 5 years
TLC <80% of predicted value
lung HRCT cystic score
Time frame: 5 years
The extent of cystic lesions (including thick- and thin- walled cysts) was assessed for each of the 6 defined lung areas on HRCT and classified as follows: 0 (no cyst); 1 (<25%); 2 (25-49%); 3 (50-75%) and 4 (>75%) of the lung surface analyzed. For the whole lung, the maximal value for cystic HRCT score was of 24
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Apr 2016.
- Results publication: PubMed 22441752Tazi A, Marc K, Dominique S, de Bazelaire C, Crestani B, Chinet T, Israel-Biet D, Cadranel J, Frija J, Lorillon G, Valeyre D, Chevret S. Serial computed tomography and lung function testing in pulmonary Langerhans' cell histiocytosis. Eur Respir J. 2012 Oct;40(4):905-12. doi: 10.1183/09031936.00210711. Epub 2012 Mar 22.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Pulmonary Langerhans Cell Histiocytosis, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Apr 2016. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Impairment of lung function (time frame: 5 years). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01651507, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Apr 2016; AzTrials last refreshed its copy on 8 Nov 2026.