PneumoniaNCT05627505
Diagnostic and Prognostic Value of Lung Microbiota in Early Lung Infection After Lung Transplantation
An observational study of Pneumonia, run by Qingyuan Zhan.
Trial summary
The present study is a prospective case-control study. Patients were enrolled post lung transplantation and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pneumonia
- What is being tested?
- metagenomic next-generation sequencing
- How many people
- 80 participants
- Where
- No sites listed yet
- Study dates
- 20 Nov 2022to 30 Dec 2023
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients admitted to ICU after lung transplantation in China-Japan Friendship Hospital
Who may be able to join
- Patients admitted to the ICU for lung transplantation; consent for bronchoscopy; informed consent signed by the patient or their representative.
Who cannot join
- Patients admitted to ICU for other serious illnesses; patients more than 48 hours after lung transplantation; patients predicted to die within 48 hours; participation in other clinical studies; failure to sign an informed consent form.
Trial locations and contacts
No sites are listed yet.
About this study
The present study is a prospective case-control study. Patients were enrolled post lung transplantation and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients were divided into pulmonary infection and non-pulmonary infection groups based on whether they had a co-infection at the time of sampling. Pulmonary infection was used as the primary study endpoint. To describe and compare the characteristics of the lung microbiota in the two groups and to determine whether variation in the lung microbiota could predict the development of lung infection and prognosis in patients in the early post-transplant period.
Read the detailed description
Lung infection is a common and serious problem in the perioperative period of lung transplantation, and early diagnosis of lung infection is important, while traditional culture methods are time-consuming and have low positivity rates. Pathogenic detection by macro-genomic sequencing (mNGS) may be useful for early and rapid diagnosis of post-operative infections, and the simultaneous detection of lower respiratory tract microbiota may also be useful for early diagnosis of infections. However, the use of lung microbiota in the perioperative period of lung transplantation in the setting of pulmonary infections is still at an exploratory stage. The present study is a prospective case-control study. Patients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients were divided into pulmonary infection and non-pulmonary infection groups based on whether they had a co-infection at the time of sampling. Pulmonary infection was used as the primary study endpoint. To describe and compare the characteristics of the lung microbiota in the two groups and to determine whether variation in the lung microbiota could predict the development of lung infection and prognosis in patients in the early post-transplant period. To explore the diagnostic thresholds of common lung pathogens by macrogenomic sequencing in patients with co-infections in the early post-transplant period
- Conditions
- Pneumonia
- Being tested
- metagenomic next-generation sequencing
- Medical subject headings
- Pneumonia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
metagenomic next-generation sequencingDiagnostic test
Also called next-generation sequencing
Collection of bronchoalveolar lavage fluid
| Study group | Role | What they receive |
|---|---|---|
| Pneumonia group | Patients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients will be divided into pneumonia group if they had a co-infection at the time of sampling. Receives: Diagnostic Test: metagenomic next-generation sequencing | |
| control group | Patients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients will be divided into non-pulmonary infection （control）group if they had no co-infection at the time of sampling. Receives: Diagnostic Test: metagenomic next-generation sequencing |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of lung infection
Positive etiology, respiratory symptoms, new infiltrative shadow on chest imaging
Measured: Within 48 hours after surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Nov 2022
- Study start20 Nov 2022 (estimated)
- Primary completion30 Nov 2023 (estimated)
- Study completion30 Dec 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PneumoniaStudies of the same condition, open and under way.
- 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 80 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Qingyuan Zhan
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Qingyuan Zhan, China-Japan Friendship Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05627505
- Sponsor's protocol ID
- 2022-HX-53
- Status last verified
- Nov 2022
- First submitted
- 17 Nov 2022
- Last updated
- 25 Nov 2022
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Nov 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Diagnostic and Prognostic Value of Lung Microbiota in Early Lung Infection After Lung Transplantation
- ClinicalTrials.gov ID
- NCT05627505
- Acronym / sponsor ID
- 2022-HX-53
- Conditions
- Pneumonia
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 80 participants (estimated)
- Lead sponsor
- Qingyuan ZhanUniversity, hospital or other
- Study start
- 20 Nov 2022 (estimated)
- Primary completion
- 30 Nov 2023 (estimated)
- Study completion
- 30 Dec 2023 (estimated)
- First posted
- 25 Nov 2022 (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 present study is a prospective case-control study. Patients were enrolled post lung transplantation and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients were divided into pulmonary infection and non-pulmonary infection groups based on whether they had a co-infection at the time of sampling. Pulmonary infection was used as the primary study endpoint. To describe and compare the characteristics of the lung microbiota in the two groups and to determine whether variation in the lung microbiota could predict the development of lung infection and prognosis in patients in the early post-transplant period.
Detailed description
Lung infection is a common and serious problem in the perioperative period of lung transplantation, and early diagnosis of lung infection is important, while traditional culture methods are time-consuming and have low positivity rates. Pathogenic detection by macro-genomic sequencing (mNGS) may be useful for early and rapid diagnosis of post-operative infections, and the simultaneous detection of lower respiratory tract microbiota may also be useful for early diagnosis of infections. However, the use of lung microbiota in the perioperative period of lung transplantation in the setting of pulmonary infections is still at an exploratory stage. The present study is a prospective case-control study. Patients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients were divided into pulmonary infection and non-pulmonary infection groups based on whether they had a co-infection at the time of sampling. Pulmonary infection was used as the primary study endpoint. To describe and compare the characteristics of the lung microbiota in the two groups and to determine whether variation in the lung microbiota could predict the development of lung infection and prognosis in patients in the early post-transplant period. To explore the diagnostic thresholds of common lung pathogens by macrogenomic sequencing in patients with co-infections in the early post-transplant period
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Pneumonia group | – | Diagnostic Test: metagenomic next-generation sequencingPatients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients will be divided into pneumonia group if they had a co-infection at the time of sampling. |
| control group | – | Diagnostic Test: metagenomic next-generation sequencingPatients in the MICU after lung transplantation were enrolled, and alveolar lavage fluid was obtained within 48 hours of the patient's surgery, divided into aliquots, and subjected to macrogenomic sequencing, routine microbiological testing and cytokine testing. Patients will be divided into non-pulmonary infection （control）group if they had no co-infection at the time of sampling. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients admitted to ICU after lung transplantation in China-Japan Friendship Hospital
Key inclusion criteria (1 listed)
- Patients admitted to the ICU for lung transplantation; consent for bronchoscopy; informed consent signed by the patient or their representative.
Key exclusion criteria (1 listed)
- Patients admitted to ICU for other serious illnesses; patients more than 48 hours after lung transplantation; patients predicted to die within 48 hours; participation in other clinical studies; failure to sign an informed consent form.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| metagenomic next-generation sequencingAlso: next-generation sequencingCollection of bronchoalveolar lavage fluid | Diagnostic test | Pneumonia group, control group |
Primary outcome
Incidence of lung infection
Time frame: Within 48 hours after surgery
Positive etiology, respiratory symptoms, new infiltrative shadow on chest imaging
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Nov 2022.
- 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.
Questions about this trial
What is this clinical trial studying?
An observational study of Pneumonia, run by Qingyuan Zhan.
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 1 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 25 Nov 2022. Status can change between updates, so confirm with the study contact before making plans.
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 Yuhan Wu, Dr (18845145580, why20220509@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incidence of lung infection (time frame: Within 48 hours after surgery). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 25 Nov 2022.