DCP (RaDiCo Cohort) (RaDiCo-DCP)
DCP
Primary Ciliary Dyskinesias: Identification of Specific Severity Criteria and Phenotype-genotype Correlation Study
1 other identifier
observational
300
1 country
32
Brief Summary
Primary Ciliary Dyskinesias (PCD) are rare, autosomal recessive respiratory diseases, due to a defect in mucociliary clearance linked to abnormalities in the structure and/or function of the cilia. The variety of ciliary abnormalities identified reflects the genetic heterogeneity of PCDs. The thirty or so genes currently implicated explain the pathology in about half of the patients. PCDs are characterized by recurrent infections of the upper (rhinosinusitis) and lower (bronchitis) airways, beginning in early childhood and progressing respectively to nasal polyposis and bronchial dilatation. In half of the cases, there is a lateralization defect of the organs (situs inversus) corresponding to Kartagener's syndrome. There is more frequent infertility in men (immobility of spermatozoa) than in women (miscarriages and tubal pregnancies). About a third of patients progress to respiratory failure. The identification of predictive factors of severity, specific to PCDs, would improve patient care. It is also important to assess the quality of life of patients with PCD, particularly at the ENT level. Data from prevalent patients are currently integrated into three separate and complementary databases: the "e-RespiRare" database, the "DCP Cils" database and the "DCP genes" database. The first step is therefore to constitute the RaDiCo-DCP database which will include data from prevalent and incident patients whose diagnosis of PCD is certain. The cohort aims to improve the routine care of PCD patients, in particular by highlighting predictive factors of severity, allowing early and personalized care, to assess the social impact (quality of life) and medical conditions of ENT impairment, as well as adult infertility, to finely characterize the ciliary phenotype. The study also aims to search for new DCP genes and to allow genotype/phenotype correlation studies.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started May 2017
Longer than P75 for all trials
32 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
May 1, 2017
CompletedFirst Submitted
Initial submission to the registry
May 6, 2022
CompletedFirst Posted
Study publicly available on registry
July 19, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
May 1, 2027
February 12, 2026
February 1, 2026
10 years
May 6, 2022
February 10, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Comparison and description for severe and non-severe patients of the phenotypic characteristics of the disease in adult and pediatric patients.
Through study completion, an average of 5 years
Secondary Outcomes (5)
Validation of the involvement of new DCP genes
Through study completion, an average of 5 years
Impact of disease on quality of life will be evaluated through scores of quality of life questionnaires Best Cilia 6-12 years old
Through study completion, an average of 5 years
Impact of disease on quality of life will be evaluated through scores of quality of life questionnaire Best Cilia 13-17 years old
Through study completion, an average of 5 years
Impact of disease on quality of life will be evaluated through scores of quality of life questionnaire Best Cilia 18+ years old
Through study completion, an average of 5 years
Impact of disease on quality of life will be evaluated through scores of quality of life questionnaire Sino-nasal outcome test-22
Through study completion, an average of 5 years
Other Outcomes (1)
Association studies between the different clinical phenotypic aspects, the ciliary phenotype and the genotype.
Through study completion, an average of 5 years
Eligibility Criteria
Study population includes children and adults with the confirmed diagnosis of PCD. The objective is to recruit 300 patients.
You may qualify if:
- Patient fulfilling at least one of the following criteria for PCD confirmed diagnosis: Kartagener's syndrome and/or specific anomaly of the ciliary ultrastructure and/or an unambiguous mutation in a PCD gene
- Having at least one annual follow-up visit
- Patients with an unconfirmed diagnosis of PCD
- Patients with an evolving concomitant pathology that may interfere with the assessment of PCD-related manifestations
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (32)
Hôpital Jean Minjoz
Besançon, France
Hôpital Pellegrin-Enfants
Bordeaux, France
CHU de Caen
Caen, France
Hôpital Clémenceau
Caen, France
Centre Hospitalier Intercommunal de Créteil
Créteil, France
Centre Hospitalier Intercommunal de Créteil
Créteil, France
Centre Hospitalier Intercommunal de Créteil
Créteil, France
Hôpital Henri Mondor
Créteil, France
Hôpital Le Bocage
Dijon, France
Hôpital Bicêtre
Le Kremlin-Bicêtre, France
Hôpital Jeanne de Flandre
Lille, France
Hôpital Femme-Mère-Enfant
Lyon, France
Hôpital Louis Pradel
Lyon, France
Hôpital de la Timone
Marseille, France
Hôpital Nord
Marseille, France
Hôpital Arnaud de Villeneuve
Montpellier, France
Hôpital Arnaud de Villeneuve
Montpellier, France
Hôpital Lenval
Nice, France
Hôpital Armand Trousseau
Paris, France
Hôpital Armand Trousseau
Paris, France
Hôpital Bichat
Paris, France
Hôpital Cochin
Paris, France
Hôpital Necker-Enfants Malades
Paris, France
Hôpital Robert Debré
Paris, France
Hôpital Tenon
Paris, France
American Memorial Hospital
Reims, France
Hôpital Charles Nicolle
Rouen, France
Hospices Civils
Strasbourg, France
Hôpital Hautepierre
Strasbourg, France
Hôpital des Enfants
Toulouse, France
Hôpital Larrey
Toulouse, France
Hôpital de Clocheville
Tours, France
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Bernard MAITRE
INSERM UMR 955
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- OTHER
- Sponsor Type
- OTHER GOV
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 6, 2022
First Posted
July 19, 2023
Study Start
May 1, 2017
Primary Completion (Estimated)
May 1, 2027
Study Completion (Estimated)
May 1, 2027
Last Updated
February 12, 2026
Record last verified: 2026-02