- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07679789
Community-acquired Pneumonia Due to Chlamydia Pneumoniae (CHLAMPAC)
Prevalence and Phenotyping of Chlamydia Pneumoniae Infections Among Pnuemonias Tested With Simplex and Multiplex PCR
This international retrospective Franco-Swiss study focuses on community-acquired pneumonia (CAP) caused by Chlamydia pneumoniae.
The working hypothesis is that the prevalence of C. pneumoniae pneumonia is overestimated by the medical community.
The primary objective is to determine the true prevalence of C. pneumoniae infections among patients with pneumonia who underwent simplex or multiplex PCR testing.
Secondary objectives include;
- Outpatient management
- Hospitalization in a medical ward
- Admission to the intensive care unit
- In-hospital mortality
- Radiological presentation of patients with community-acquired pneumonia (CAP) caused by Chlamydia pneumoniae
- Prevalence of viral or bacterial co-infections associated with C. pneumoniae CAP
Studienübersicht
Status
Bedingungen
Detaillierte Beschreibung
This international retrospective Franco-Swiss study focuses on community-acquired pneumonia (CAP) caused by Chlamydia pneumoniae. The working hypothesis is that the prevalence of C. pneumoniae pneumonia is overestimated by the medical community. The primary objective is to determine the true prevalence of C. pneumoniae infections among patients with pneumonia who underwent simplex or multiplex PCR testing. Secondary objectives include;1)Outpatient management2)Hospitalization in a medical ward3)Admission to the intensive care unit4) In-hospital mortality5) Radiological presentation of patients with community-acquired pneumonia (CAP) caused by Chlamydia pneumoniae 6)Prevalence of viral or bacterial co-infections associated with C. pneumoniae CAP
Detailed Description We have all learned and continue to teach that community-acquired pneumonia (CAP) is essentially represented by three bacteria: Legionella pneumophila, Mycoplasma pneumoniae, and Chlamydia pneumoniae. While the recent Mycoplasma outbreak in France and the prevalence of severe Legionella infections in intensive care units confirm the real impact of these pathogens in CAP, the low number of Chlamydia pneumoniae cases documented by PCR raises questions.Over the past twenty years, the development of highly sensitive molecular tests (specific PCR or multiplex PCR targeting intracellular respiratory pathogens) has made it possible to precisely detect Chlamydia pneumoniae and to confirm or rule out its presence in the respiratory tract of patients with pneumonia.We are therefore conducting a retrospective study between France and Switzerland to determine, on the one hand, the number of CAP cases due to Chlamydia pneumoniae confirmed by PCR, and on the other hand, to better characterize the phenotype of these patients.
Studientyp
Einschreibung (Geschätzt)
Kontakte und Standorte
Studienkontakt
- Name: Yacine Tandjaoui-Lambiotte, Principal Investigator
- Telefonnummer: +33 1 42 35 61
- E-Mail: yacine.tandjaouilambiotte@ch-stdenis.fr
Studieren Sie die Kontaktsicherung
- Name: Clinical Research Unit Coordinator Clinical Research Unit Coordinator, GHT Plaine de France Clinical
- Telefonnummer: 6962 +33 1 42 35 61 40
- E-Mail: coordination.rechercheclinique@ghtpdfr.fr
Studienorte
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Saint-Denis, Frankreich, 93200
- Centre Hospitalier de Saint-Denis
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Kontakt:
- Yacine Tandjaoui-Lambiotte, Principal Investigator
- Telefonnummer: +33 1 42 35 61
- E-Mail: yacine.tandjaouilambiotte@ch-stdenis.fr
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Kontakt:
- Stéphanie COSSEC
- Telefonnummer: 6962 0142356140
- E-Mail: stephanie.cossec@ghtpdfr.fr
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
- Kind
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
- Positive simplex or multiplex PCR for Chlamydia pneumoniae on an upper or lower respiratory tract specimen between January 2015 and December 2025.
- Availability of clinical data allowing confirmation of pneumonia diagnosis.
Exclusion Criteria:
- Patient opposition to the use of medical data for research purposes.
- Absence of pneumonia diagnosis.
- Insufficient clinical data for analysis.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Prevalence of Chlamydia pneumoniae Among Pneumonia Cases Tested by PCR
Zeitfenster: January 2015 to December 2025
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Proportion of pneumonia cases with a positive simplex or multiplex PCR for Chlamydia pneumoniae among all patients who underwent respiratory PCR testing during the study period.
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January 2015 to December 2025
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Clinical Severity of Chlamydia pneumoniae Pneumonia
Zeitfenster: From hospital admission through hospital discharge (up to 90 days)
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Distribution of patients according to outpatient management, hospitalization in a medical ward, admission to intensive care, and in-hospital mortality.
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From hospital admission through hospital discharge (up to 90 days)
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Radiological Characteristics
Zeitfenster: Baseline (at the time of pneumonia diagnosis)
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Chest radiograph and chest computed tomography findings associated with PCR-confirmed Chlamydia pneumoniae pneumonia.
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Baseline (at the time of pneumonia diagnosis)
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Viral Co-Infection Rate
Zeitfenster: Baseline (at the time of PCR testing)
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Proportion of patients with concomitant viral infection identified by microbiological testing.
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Baseline (at the time of PCR testing)
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Bacterial Co-Infection Rate
Zeitfenster: Baseline (at the time of PCR testing)
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Proportion of patients with concomitant bacterial infection identified by microbiological testing.
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Baseline (at the time of PCR testing)
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Length of Hospital Stay
Zeitfenster: From hospital admission through hospital discharge (up to 90 days)
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Duration of hospitalization among admitted patients.
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From hospital admission through hospital discharge (up to 90 days)
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Mitarbeiter und Ermittler
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Garin N, Hugli O, Genne D, Greub G. Lack of Chlamydia-related bacteria among patients with community-acquired pneumonia. New Microbes New Infect. 2015 Oct 22;8:164-5. doi: 10.1016/j.nmni.2015.10.002. eCollection 2015 Nov. No abstract available.
- Garin N, Marti C, Skali Lami A, Prendki V. Atypical Pathogens in Adult Community-Acquired Pneumonia and Implications for Empiric Antibiotic Treatment: A Narrative Review. Microorganisms. 2022 Nov 24;10(12):2326. doi: 10.3390/microorganisms10122326.
- Miyashita N. Atypical pneumonia: Pathophysiology, diagnosis, and treatment. Respir Investig. 2022 Jan;60(1):56-67. doi: 10.1016/j.resinv.2021.09.009. Epub 2021 Nov 5.
- Cunha BA. The atypical pneumonias: clinical diagnosis and importance. Clin Microbiol Infect. 2006 May;12 Suppl 3:12-24. doi: 10.1111/j.1469-0691.2006.01393.x.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Primärer Abschluss (Geschätzt)
Studienabschluss (Geschätzt)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Infektionen
- Erkrankungen der Atemwege
- Lungenkrankheit
- Lungenentzündung
- Bakterielle Infektionen
- Bakterielle Infektionen und Mykosen
- Gramnegative bakterielle Infektionen
- Lungenentzündung, bakteriell
- Mycoplasmatales-Infektionen
- Ambulant erworbene Infektionen
- Mycoplasma-Infektionen
- Infektionen der Atemwege
- Koinfektion
- Lungenentzündung, Mykoplasmen
- Ambulant erworbene Pneumonie
Andere Studien-ID-Nummern
- 0079_MIR_CHLAMPAC
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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