- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04877223
Monocytes as Predictors of Cystic Fibrosis-related Bone Disease (MucOs)
Study of Blood Monocytes as a Predictive Marker of Cystic Fibrosis-related Bone Disease
Hypothesis: Circulating monocytes RANK and MCSF-R expression is predictive of Cystic Fibrosis-related Bone Disease.
Study design: Single-center comparative cross-sectional study Population: Patients with a CFTR channel mutation causing cystic fibrosis consulting the Centre de Ressources et de Compétences de la Mucoviscidose (CRCM) at Reims University Hospital will be recruited. Healthy controls will be recruited from donors at the Etablissement Français du Sang Grand Est, Reims.
Judgment criteria:
- Main judgment criterion: X Expression level of CD115 (MCSF receptor) and CD265 (RANK) evaluated by flow cytometry receptors on the membranes of circulating monocytes.
- Secondary judgment criteria: X Rate of circulating CD115 +, CD265 +, CD115 + / CD265 + monocytes X Number of multinucleated cells with more than 2 nuclei and with an actin ring observed under fluorescence microscopy after osteoclastic differentiation X Surface of dentin resorbed in vitro by osteoclasts during an osteoclastic functionality test on dentin X Serum S1P levels assayed by ELISA technique.
Investigation plan:
Any eligible patient will be offered to participate in the study during the consultation at the CRCM. If the patient agrees to participate in the study, he/she will be included. Participation in the study will not affect its coverage. Participation will lead to the collection of three tubes of whole blood additional to those used as part of usual care, as well as the collection of demographic data (age, sex, height, weight, body mass index), sports practice, clinical images and interpretation, medical history (diabetes, infectious status, bone metabolism disorders, drug treatments followed, psychiatric disorders). Any subsequent donor from the EFS GE collected under the ALC / PIL / DIR / AJR / FO / 606 agreement and presenting characteristics of age +/- 2 years and identical gender will then be included.
Statistical analysis plan:
Qualitative variables will be described in terms of number and percentage. The quantitative distribution variables according to the Normal law will be described in the form of mean +/- standard deviation or in the form of boxplots (median, quartiles, deciles) if a distribution not following the Normal law is observed. ANOVA test, non-parametric Wilcoxon signed-rank test or chi² test will be aplied depending on the application conditions. A value of p <0.05 will be considered statistically significant.
Study Overview
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Bruno RAVONINJATOVO
- Phone Number: 03 26 78 38 68
- Email: bravoninjatovo@chu-reims.fr
Study Locations
-
-
-
Reims, France
- Recruiting
- Université de Reims Champagne-Ardenne
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients between 20 and 65 years (+/- 2 years)
- Patients of the CRCM of Reims University Hospital
- Patients with at least one CF causing mutation in CFTR gene
- Patients agreeing to participate in the study (informed consent form)
- Patients fluent in French
- Patients affiliated with a social security regimen
- Healthy donors between 20 and 65 years (+/- 2 years)
- Healthy donors giving blood at EFS GE, Reims
- Healthy donors agreeing to participate in the study (informed consent form)
- Healthy donors fluent in French
- Healthy donors affiliated with a social security regimen
- Healthy donors whose characteristics agree with the ALC/PIL/DIR/AJR /FO/606 convention between EFS GE, Reims, and Reims Champagne-Ardenne University
Exclusion Criteria:
- Patient having a medical history that may compromise the protocol (psychiatric, medical or pharmacological disorders such as the use of anti-inflammatory drugs, or any compound that may alter or modify the inflammatory reaction in the week preceding the protocol).
- Pregnant or breastfeeding women
- Patient with eating disorders (anorexia, bulimia, overeating)
- Patient protected by law (guardianship, curatorship, hospitalized without their consent and not protected by law, deprived of liberty)
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
CF
Patients with Cystic Fibrosis
|
No intervention
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Assessment of CD115 and CD265 expression on circulating monocytes
Time Frame: Immediately after sampling
|
Flow cytometry
|
Immediately after sampling
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Assessment of CD115+, CD265+ and CD115+/CD265+ cells
Time Frame: Immediately after sampling
|
Flow cytometry
|
Immediately after sampling
|
Count of multinucleated cells with actin ring
Time Frame: 3 weeks after sampling
|
Phalloïdin/DAPI staining and microscope observation
|
3 weeks after sampling
|
Measurement of resorbed dentin surface
Time Frame: 3 weeks after sampling
|
Scanning electron microscopy
|
3 weeks after sampling
|
Measurement of serum S1P concentration
Time Frame: Immediately after sampling
|
ELISA
|
Immediately after sampling
|
Collaborators and Investigators
Investigators
- Principal Investigator: Bruno RAVONINJATOVO, Centre de Ressources et de Compétences de la mucoviscidose
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2020-006-MucOs
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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