Cystic Fibrosis Pulmonary ExacerbationDYSBIOSE-CFNCT03569904
Markers of Pulmonary Dysbiosis Associated With Exacerbation in Patients Followed for Cystic Fibrosis
An observational study of Cystic Fibrosis Pulmonary Exacerbation, run by University Hospital, Grenoble at 1 site in France.
Trial summary
The aim objective is to identify markers of bacterial, viral and fungal pulmonary dysbiosis, associated with the occurrence of exacerbation in patients followed for cystic fibrosis. Read more about this study
- Who is it for?
- Ages 12 years and older
- Conditions the study is for
- Cystic Fibrosis Pulmonary Exacerbation
- How many people
- 30 participants
- Where
- 1 siteFrance
- Study dates
- 2 Oct 2018to Dec 2021
- 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 12 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: Patients followed for cystic fibrosis are followed in "CRCM". The selection of patients will be done by the various investigating physicians during consultations, day hospitals or admission to the hospital for differents reasons. This research protocol fits as much as possible in the context of routine care, particularly with respect to the rhythmicity of the various visits
Who may be able to join
- Patients with cystic fibrosis
- Patient agreeing to participate in the study
- Patient with at least 2 exacerbations in the year prior to inclusion (2 antimicrobial treatments at home or in hospital during the last 12 months)
- Patient or legal guardian of the patient able to read and understand the procedure and able to express his / her consent for the study protocol
- Stable patients, away from exacerbation (at 4 weeks from the beginning of exacerbation, found to be resolved by the investigator)
- Patient affiliated to the social security scheme
Who cannot join
- Patients who can not read
- Patients opposing the use of their medical data
- Unstable patients, less than one month from the beginning of the exacerbation
- Pregnant or lactating women
- Adult patient under curatorship or tutorship, person deprived of liberty
- Patient awaiting transplant or non-invasive ventilation in chronic
- Patient can not be contacted in case of emergency
Trial locations and contacts
1 site in 1 country.
France1 site, 1 recruiting
- Recruiting
University Hospital Grenoble
Grenoble
Boubou Camara
About this study
The aim objective is to identify markers of bacterial, viral and fungal pulmonary dysbiosis, associated with the occurrence of exacerbation in patients followed for cystic fibrosis.
The primary endpoint is the association between a modification of at least 10% of the relative abundance of a bacterial phylum (Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, Fusobacteria) or fungal (ascomycetes / hemiascomycetes, basidiomycetes, zygomycetes), or viral, and the occurrence of exacerbations over a period of 12 months.
Read the detailed description
Therapeutic advances and the organization of care within the "CRCM" have led to an overall improvement in the management of cystic fibrosis. The protein therapies that have marked this progression only target certain genes and concern a small number of patients. The morbidity, mortality and social cost of cystic fibrosis are still considerable. Exacerbations modulate the prognosis of the disease.
We are interested in dysbiosis, which is the association of an imbalance in the composition and functions of commensal complex microbial communities and an alteration of the immune response of the host. It is involved in the development of chronic pulmonary pathologies such as cystic fibrosis Pulmonary microbiota and host responses mutually influence each other, and evidence suggests that changes in microbiota-host interactions play a major role in the evolution of chronic respiratory diseases. The response of the host may be partially measured by protein markers of inflammation or metabolites regulating inflammation (tryptophan metabolites).
Most microbiome studies focus on the bacterial microbiota, while other microorganisms such as fungi and viruses represent an important cofactor in the degradation of respiratory function. Viral dysbiosis probably plays a role in the appearance of exacerbation.
Among the few studies incorporating fungal risk, very few have considered the role of Pneumocystis jirovecii (PCJ). This non-culturable species was found in 12.5% of patients with cystic fibrosis and possibly associated with exacerbations. We will prospectively follow a cohort of cystic fibrosis patients by collecting clinical and microbiological data on various samples (exhaled air condensate (EAC), sputum and serum) on a quarterly basis and during episodes of exacerbations.
Our project will verify the hypothesis of a correlation between the microbiota, inflammation, and the production of metabolites regulating inflammation (dysbiosis), but also to determine what is the initial biological process leading to the exacerbation: dysbiosis induced by variation of the microbiota or dysbiosis induced by modification of host defense systems. In addition, unlike studies in this area, we will be interested in the bacterial, viral and fungal microbiota.
- Conditions
- Cystic Fibrosis Pulmonary Exacerbation
- Keywords
- Cystic fibrosis, Pulmonary Dysbiosis, pulmonary exacerbation, Fungal bacterial pulmonary dysbiosis, Viral bacterial pulmonary dysbiosis, Microbiota
- Medical subject headings
- Cystic Fibrosis
What is being measured
The primary outcome is the main question the study is designed to answer.
Identification of markers of bacterial fungal and viral dysbiosis associated with the occurrence of exacerbation in patients followed for cystic fibrosis.
Association between a modification of at least 10% of the relative abundance of a bacterial phylum (Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, Fusobacteria) or fungal (ascomycetes / hemiascomycetes, basidiomycetes, zygomycetes), or viral and the occurrence of exacerbations over a period of 12 months.
Measured: One year
Secondary outcomes (8)
Evaluation of the influence of the modification of the relative abundance of different bacterial, viral and fungal taxa, on the occurrence of exacerbations
Association between a change of at least 10% in the relative abundance of a bacterial or fungal taxum, and the occurrence of exacerbations over a 12-month period
Measured: One year
Evaluation of the influence of the global biodiversity of the bacterial and fungal pulmonary microbiome on the occurrence of exacerbations.
Association between a modification of two indices (Faith's Phylogenetic Diversity and Shannon's B H index) and the occurrence of exacerbations over a 12-month period
Measured: One year
Association between markers of respiratory function and the relative abundance of different bacterial, viral and fungal phyla and taxa
Correlation between FEV1 on the one hand, and changes in the relative abundance of bacterial, viral and fungal phyla and taxa on the other hand
Measured: One year
Evaluation of the link between an increase in inflammatory markers and the occurrence of exacerbations
Association between serum concentrations of serum inflammatory cytokines and the occurrence of exacerbations over a period of 12 months
Measured: One year
Association between markers of respiratory function and serum inflammatory markers
Correlation between FEV 1 and CV on the one hand, and different serum inflammatory serum cytokines
Measured: One year
Comparison of two types of sputum samples versus expired air condensate to evaluate the pulmonary microbiome in patients with cystic fibrosis
Comparison of relative abundance of phyla of interest in sputum vs exhaled air condensate
Measured: One year
Evaluation of the interactions between the different taxa of the pulmonary microbiome of patients with cystic fibrosis
Network co-occurrence (network interference) of the relative abundance of different bacterial and fungal taxa
Measured: One year
Evaluation of the impact of treatments administered during exacerbations on the pulmonary microbiome, in particular on changes in the relative abundance and diversity of different bacterial, viral and fungal taxa
Comparison of the relative abundance of the phyla of interest and the diversity of the microbiome (Faith's Phylogenetic Diversity and Shannon B H index) in the presence or absence of antimicrobial and anti-inflammatory steroid treatments
Measured: One year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Jun 2018
- Study start2 Oct 2018
- Primary completionSep 2021 (estimated)
- Study completionDec 2021 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Cystic Fibrosis Pulmonary ExacerbationStudies of the same condition, open and under way.
- More trials run by University Hospital, GrenobleThe 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
- Other
- Time perspective
- Prospective
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University Hospital, Grenoble
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03569904
- Sponsor's protocol ID
- 38RC17.317
- Acronym
- DYSBIOSE-CF
- Status last verified
- Mar 2020
- First submitted
- 14 Jun 2018
- Last updated
- 18 Mar 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Beaumier L, Chanoine S, Camara B, Pison C, Bedouch P. Alemtuzumab and de novo pulmonary arterial hypertension: A potential association? J Heart Lung Transplant. 2017 Mar;36(3):370-371. doi: 10.1016/j.healun.2016.10.013. Epub 2016 Oct 29. No abstract available.
PubMed 27889369Wintenberger C, Maubon D, Charpentier E, Rendu J, Pavese P, Augier C, Malvezzi P, Camara B, Mallaret MR, Bouillet L, Epaulard O. Grouped Cases of Pulmonary Pneumocystosis After Solid Organ Transplantation: Advantages of Coordination by an Infectious Diseases Unit for Overall Management and Epidemiological Monitoring. Infect Control Hosp Epidemiol. 2017 Feb;38(2):179-185. doi: 10.1017/ice.2016.274. Epub 2016 Nov 28.
PubMed 27890037Zhao Y, Garnaud C, Brenier-Pinchart MP, Thiebaut-Bertrand A, Saint-Raymond C, Camara B, Hamidfar R, Cognet O, Maubon D, Cornet M, Perlin DS. Direct Molecular Diagnosis of Aspergillosis and CYP51A Profiling from Respiratory Samples of French Patients. Front Microbiol. 2016 Jul 29;7:1164. doi: 10.3389/fmicb.2016.01164. eCollection 2016.
PubMed 27524978Decorte N, Gruet M, Camara B, Quetant S, Mely L, Vallier JM, Verges S, Wuyam B. Absence of calf muscle metabolism alterations in active cystic fibrosis adults with mild to moderate lung disease. J Cyst Fibros. 2017 Jan;16(1):98-106. doi: 10.1016/j.jcf.2016.05.010. Epub 2016 Jun 15.
PubMed 27316662Claustre J, Brion JP, Quetant S, Bedouch P, Pison C, Camara B. Favorable Evolution of Cryptococcal Meningitis in the Context of Flucytosine Resistance. Exp Clin Transplant. 2018 Feb;16(1):110-113. doi: 10.6002/ect.2015.0217. Epub 2016 Apr 26.
PubMed 27143150Roca A, Oluwalana C, Bojang A, Camara B, Kampmann B, Bailey R, Demba A, Bottomley C, D'Alessandro U. Oral azithromycin given during labour decreases bacterial carriage in the mothers and their offspring: a double-blind randomized trial. Clin Microbiol Infect. 2016 Jun;22(6):565.e1-9. doi: 10.1016/j.cmi.2016.03.005. Epub 2016 Mar 26.
PubMed 27026482Godet C, Laurent F, Bergeron A, Ingrand P, Beigelman-Aubry C, Camara B, Cottin V, Germaud P, Philippe B, Pison C, Toper C, Carette MF, Frat JP, Beraud G, Roblot F, Cadranel J; ACHROSCAN Study Group. CT Imaging Assessment of Response to Treatment in Chronic Pulmonary Aspergillosis. Chest. 2016 Jul;150(1):139-47. doi: 10.1016/j.chest.2016.02.640. Epub 2016 Feb 19.
PubMed 26905365Dumollard C, Bailly S, Perriot S, Brenier-Pinchart MP, Saint-Raymond C, Camara B, Gangneux JP, Persat F, Valot S, Grenouillet F, Pelloux H, Pinel C, Cornet M. Prospective Evaluation of a New Aspergillus IgG Enzyme Immunoassay Kit for Diagnosis of Chronic and Allergic Pulmonary Aspergillosis. J Clin Microbiol. 2016 May;54(5):1236-42. doi: 10.1128/JCM.03261-15. Epub 2016 Feb 17.
PubMed 26888904Godet C, Laurent F, Beraud G, Toper C, Camara B, Philippe B, Germaud P, Cottin V, Beigelman-Aubry C, Khalil A, Blouin P, Pouriel M, Roblot F, Bergeron A, Cadranel J; ACHROSCAN study group. Phenotyping chronic pulmonary aspergillosis by cluster analysis. Eur Respir J. 2015 Nov;46(5):1509-12. doi: 10.1183/13993003.00869-2015. Epub 2015 Sep 17. No abstract available.
PubMed 26381520Gruet M, Decorte N, Mely L, Vallier JM, Camara B, Quetant S, Wuyam B, Verges S. Skeletal muscle contractility and fatigability in adults with cystic fibrosis. J Cyst Fibros. 2016 Jan;15(1):e1-8. doi: 10.1016/j.jcf.2015.05.004. Epub 2015 May 29.
PubMed 26033387Bouvaist H, Thony F, Jondot M, Camara B, Jais X, Pison C. Balloon pulmonary angioplasty in a patient with chronic thromboembolic pulmonary hypertension. Eur Respir Rev. 2014 Sep;23(133):393-5. doi: 10.1183/09059180.00000514. No abstract available.
PubMed 25176976Claustre J, Quetant S, Camara B, France M, Schummer G, Bedouch P, Pavese P, Saint Raymond C, Bardy B, Masson D, Roth H, Pison C; Grenoble Lung Transplantation group. Nonspecific immunoglobulin replacement in lung transplantation recipients with hypogammaglobulinemia: a cohort study taking into account propensity score and immortal time bias. Transplantation. 2015 Feb;99(2):444-50. doi: 10.1097/TP.0000000000000339.
PubMed 25099705Bosc C, Clement M, Deroux A, Mammar A, Pison C, Camara B. [Severe pneumonia due to cytomegalovirus in chronic obstructive pulmonary disease]. Rev Mal Respir. 2014 May;31(5):435-8. doi: 10.1016/j.rmr.2013.09.013. Epub 2013 Dec 2. French.
PubMed 24878160Camara B, Reymond E, Saint-Raymond C, Roth H, Brenier-Pinchart MP, Pinel C, Cadranel J, Ferretti G, Pelloux H, Pison C; Grenoble Aspergillus Committee. Characteristics and outcomes of chronic pulmonary aspergillosis: a retrospective analysis of a tertiary hospital registry. Clin Respir J. 2015 Jan;9(1):65-73. doi: 10.1111/crj.12105. Epub 2014 Feb 17.
PubMed 24406138
Study at a glance
From the registry record, last updated by the sponsor on 18 Mar 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Markers of Pulmonary Dysbiosis Associated With Exacerbation in Patients Followed for Cystic Fibrosis
- ClinicalTrials.gov ID
- NCT03569904
- Acronym / sponsor ID
- DYSBIOSE-CF / 38RC17.317
- Conditions
- Cystic Fibrosis Pulmonary Exacerbation
- Keywords
- Cystic fibrosis, Pulmonary Dysbiosis, pulmonary exacerbation, Fungal bacterial pulmonary dysbiosis, Viral bacterial pulmonary dysbiosis, Microbiota
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- University Hospital, GrenobleUniversity, hospital or other
- Study start
- 2 Oct 2018 (actual)
- Primary completion
- Sep 2021 (estimated)
- Study completion
- Dec 2021 (estimated)
- First posted
- 26 Jun 2018 (actual)
- 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.
The aim objective is to identify markers of bacterial, viral and fungal pulmonary dysbiosis, associated with the occurrence of exacerbation in patients followed for cystic fibrosis.
The primary endpoint is the association between a modification of at least 10% of the relative abundance of a bacterial phylum (Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, Fusobacteria) or fungal (ascomycetes / hemiascomycetes, basidiomycetes, zygomycetes), or viral, and the occurrence of exacerbations over a period of 12 months.
Detailed description
Therapeutic advances and the organization of care within the "CRCM" have led to an overall improvement in the management of cystic fibrosis. The protein therapies that have marked this progression only target certain genes and concern a small number of patients. The morbidity, mortality and social cost of cystic fibrosis are still considerable. Exacerbations modulate the prognosis of the disease.
We are interested in dysbiosis, which is the association of an imbalance in the composition and functions of commensal complex microbial communities and an alteration of the immune response of the host. It is involved in the development of chronic pulmonary pathologies such as cystic fibrosis Pulmonary microbiota and host responses mutually influence each other, and evidence suggests that changes in microbiota-host interactions play a major role in the evolution of chronic respiratory diseases. The response of the host may be partially measured by protein markers of inflammation or metabolites regulating inflammation (tryptophan metabolites).
Most microbiome studies focus on the bacterial microbiota, while other microorganisms such as fungi and viruses represent an important cofactor in the degradation of respiratory function. Viral dysbiosis probably plays a role in the appearance of exacerbation.
Among the few studies incorporating fungal risk, very few have considered the role of Pneumocystis jirovecii (PCJ). This non-culturable species was found in 12.5% of patients with cystic fibrosis and possibly associated with exacerbations. We will prospectively follow a cohort of cystic fibrosis patients by collecting clinical and microbiological data on various samples (exhaled air condensate (EAC), sputum and serum) on a quarterly basis and during episodes of exacerbations.
Our project will verify the hypothesis of a correlation between the microbiota, inflammation, and the production of metabolites regulating inflammation (dysbiosis), but also to determine what is the initial biological process leading to the exacerbation: dysbiosis induced by variation of the microbiota or dysbiosis induced by modification of host defense systems. In addition, unlike studies in this area, we will be interested in the bacterial, viral and fungal microbiota.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- Patients followed for cystic fibrosis are followed in "CRCM". The selection of patients will be done by the various investigating physicians during consultations, day hospitals or admission to the hospital for differents reasons. This research protocol fits as much as possible in the context of routine care, particularly with respect to the rhythmicity of the various visits
Key inclusion criteria (6 listed)
- Patients with cystic fibrosis
- Patient agreeing to participate in the study
- Patient with at least 2 exacerbations in the year prior to inclusion (2 antimicrobial treatments at home or in hospital during the last 12 months)
- Patient or legal guardian of the patient able to read and understand the procedure and able to express his / her consent for the study protocol
- Stable patients, away from exacerbation (at 4 weeks from the beginning of exacerbation, found to be resolved by the investigator)
Key exclusion criteria (7 listed)
- Patients who can not read
- Patients opposing the use of their medical data
- Unstable patients, less than one month from the beginning of the exacerbation
- Pregnant or lactating women
- Adult patient under curatorship or tutorship, person deprived of liberty
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
Identification of markers of bacterial fungal and viral dysbiosis associated with the occurrence of exacerbation in patients followed for cystic fibrosis.
Time frame: One year
Association between a modification of at least 10% of the relative abundance of a bacterial phylum (Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, Fusobacteria) or fungal (ascomycetes / hemiascomycetes, basidiomycetes, zygomycetes), or viral and the occurrence of exacerbations over a period of 12 months.
8 secondary outcomes
Evaluation of the influence of the modification of the relative abundance of different bacterial, viral and fungal taxa, on the occurrence of exacerbations
Time frame: One year
Evaluation of the influence of the global biodiversity of the bacterial and fungal pulmonary microbiome on the occurrence of exacerbations.
Time frame: One year
Association between markers of respiratory function and the relative abundance of different bacterial, viral and fungal phyla and taxa
Time frame: One year
Evaluation of the link between an increase in inflammatory markers and the occurrence of exacerbations
Time frame: One year
Association between markers of respiratory function and serum inflammatory markers
Time frame: One year
Comparison of two types of sputum samples versus expired air condensate to evaluate the pulmonary microbiome in patients with cystic fibrosis
Time frame: One year
Evaluation of the interactions between the different taxa of the pulmonary microbiome of patients with cystic fibrosis
Time frame: One year
Evaluation of the impact of treatments administered during exacerbations on the pulmonary microbiome, in particular on changes in the relative abundance and diversity of different bacterial, viral and fungal taxa
Time frame: One year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Mar 2020.
- Background: PubMed 27889369Beaumier L, Chanoine S, Camara B, Pison C, Bedouch P. Alemtuzumab and de novo pulmonary arterial hypertension: A potential association? J Heart Lung Transplant. 2017 Mar;36(3):370-371. doi: 10.1016/j.healun.2016.10.013. Epub 2016 Oct 29. No abstract available.
- Background: PubMed 27890037Wintenberger C, Maubon D, Charpentier E, Rendu J, Pavese P, Augier C, Malvezzi P, Camara B, Mallaret MR, Bouillet L, Epaulard O. Grouped Cases of Pulmonary Pneumocystosis After Solid Organ Transplantation: Advantages of Coordination by an Infectious Diseases Unit for Overall Management and Epidemiological Monitoring. Infect Control Hosp Epidemiol. 2017 Feb;38(2):179-185. doi: 10.1017/ice.2016.274. Epub 2016 Nov 28.
- Background: PubMed 27524978Zhao Y, Garnaud C, Brenier-Pinchart MP, Thiebaut-Bertrand A, Saint-Raymond C, Camara B, Hamidfar R, Cognet O, Maubon D, Cornet M, Perlin DS. Direct Molecular Diagnosis of Aspergillosis and CYP51A Profiling from Respiratory Samples of French Patients. Front Microbiol. 2016 Jul 29;7:1164. doi: 10.3389/fmicb.2016.01164. eCollection 2016.
- Background: PubMed 27316662Decorte N, Gruet M, Camara B, Quetant S, Mely L, Vallier JM, Verges S, Wuyam B. Absence of calf muscle metabolism alterations in active cystic fibrosis adults with mild to moderate lung disease. J Cyst Fibros. 2017 Jan;16(1):98-106. doi: 10.1016/j.jcf.2016.05.010. Epub 2016 Jun 15.
- Background: PubMed 27143150Claustre J, Brion JP, Quetant S, Bedouch P, Pison C, Camara B. Favorable Evolution of Cryptococcal Meningitis in the Context of Flucytosine Resistance. Exp Clin Transplant. 2018 Feb;16(1):110-113. doi: 10.6002/ect.2015.0217. Epub 2016 Apr 26.
- Background: PubMed 27026482Roca A, Oluwalana C, Bojang A, Camara B, Kampmann B, Bailey R, Demba A, Bottomley C, D'Alessandro U. Oral azithromycin given during labour decreases bacterial carriage in the mothers and their offspring: a double-blind randomized trial. Clin Microbiol Infect. 2016 Jun;22(6):565.e1-9. doi: 10.1016/j.cmi.2016.03.005. Epub 2016 Mar 26.
- Background: PubMed 26905365Godet C, Laurent F, Bergeron A, Ingrand P, Beigelman-Aubry C, Camara B, Cottin V, Germaud P, Philippe B, Pison C, Toper C, Carette MF, Frat JP, Beraud G, Roblot F, Cadranel J; ACHROSCAN Study Group. CT Imaging Assessment of Response to Treatment in Chronic Pulmonary Aspergillosis. Chest. 2016 Jul;150(1):139-47. doi: 10.1016/j.chest.2016.02.640. Epub 2016 Feb 19.
- Background: PubMed 26888904Dumollard C, Bailly S, Perriot S, Brenier-Pinchart MP, Saint-Raymond C, Camara B, Gangneux JP, Persat F, Valot S, Grenouillet F, Pelloux H, Pinel C, Cornet M. Prospective Evaluation of a New Aspergillus IgG Enzyme Immunoassay Kit for Diagnosis of Chronic and Allergic Pulmonary Aspergillosis. J Clin Microbiol. 2016 May;54(5):1236-42. doi: 10.1128/JCM.03261-15. Epub 2016 Feb 17.
- Background: PubMed 26381520Godet C, Laurent F, Beraud G, Toper C, Camara B, Philippe B, Germaud P, Cottin V, Beigelman-Aubry C, Khalil A, Blouin P, Pouriel M, Roblot F, Bergeron A, Cadranel J; ACHROSCAN study group. Phenotyping chronic pulmonary aspergillosis by cluster analysis. Eur Respir J. 2015 Nov;46(5):1509-12. doi: 10.1183/13993003.00869-2015. Epub 2015 Sep 17. No abstract available.
- Background: PubMed 26033387Gruet M, Decorte N, Mely L, Vallier JM, Camara B, Quetant S, Wuyam B, Verges S. Skeletal muscle contractility and fatigability in adults with cystic fibrosis. J Cyst Fibros. 2016 Jan;15(1):e1-8. doi: 10.1016/j.jcf.2015.05.004. Epub 2015 May 29.
- Background: PubMed 25176976Bouvaist H, Thony F, Jondot M, Camara B, Jais X, Pison C. Balloon pulmonary angioplasty in a patient with chronic thromboembolic pulmonary hypertension. Eur Respir Rev. 2014 Sep;23(133):393-5. doi: 10.1183/09059180.00000514. No abstract available.
- Background: PubMed 25099705Claustre J, Quetant S, Camara B, France M, Schummer G, Bedouch P, Pavese P, Saint Raymond C, Bardy B, Masson D, Roth H, Pison C; Grenoble Lung Transplantation group. Nonspecific immunoglobulin replacement in lung transplantation recipients with hypogammaglobulinemia: a cohort study taking into account propensity score and immortal time bias. Transplantation. 2015 Feb;99(2):444-50. doi: 10.1097/TP.0000000000000339.
- Individual participant dataSharing planned: No
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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.
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 Cystic Fibrosis Pulmonary Exacerbation, run by University Hospital, Grenoble 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 6 inclusion and 7 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: status not confirmed, as of the sponsor's last update on 18 Mar 2020. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Boubou CAMARA, Dr (+33(0)4 76 76 58 46, BCamara@chu-grenoble.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Identification of markers of bacterial fungal and viral dysbiosis associated with the occurrence of exacerbation in patients followed for cystic fibrosis. (time frame: One year). 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 NCT03569904, which also lists 14 linked publications.
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 Mar 2020; AzTrials last refreshed its copy on 8 Nov 2026.