Mechanisms of Lung Allograft Rejection
Public ClinicalTrials.gov record NCT00340418. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will explore the ways in which lung transplants are rejected. A series of experiments will evaluate the differences in airway gene expression. Lung transplantation has become an important option for patients with advanced lung disease. More than 10,000 patients have received them to date, and about 1,200 transplant operations are performed worldwide each year. Although short-term survival has continued to improve, the 5-year survival rate is less than 50%. Most posttransplant deaths are directly or directly caused by chronic lung rejection, a condition of scarring that worsens lung function. . Patients ages 18 and older who have received lung transplants, who are undergoing bronchoscopy as part of the usual care after transplant, and who are not pregnant may be eligible for this study. Bronchoscopy and other procedures performed during this study are done only by doctors with special training. They will take a total of 30 to 60 minutes. During a bronchoscopy, patients will lie on a flat bed. They will be awake and follow instructions. First they will breathe Xylocaine (lidocaine), an anesthetic mist, for 8 to 10 minutes. That will lessen the discomfort of a small flexible tube called a bronchoscope that will be guided through the back of the patient's mouth or nose and into the breathing tubes. When the flexible tube is placed, patients will not be able to speak. They will receive the medication Versed (midazolam), to make them relaxed and not remember most of the procedure, and fentanyl, to decrease the possibility of feeling pain. These medications will be given through a narrow tube feeding into a small needle placed into a vein in the arm. The risks of the tube placed in the vein include bleeding, swelling, redness, and pain. Side effects from the medications may include stomach upset, heart palpitations (awareness of heartbeat), and changes in blood pressure. Patients will be carefully monitored for heart rate, blood pressure, breathing, and oxygen levels. During the bronchoscopy, a procedure called bronchoalveolar lavage is done, in which a small amount of germ-free salt water is injected into through the bronchoscope into the lung and immediately suctioned back, thus washing the lining of the airways and checking for infection and rejection of the transplanted lungs. About 1 or 2 tablespoons of fluid will be collected for analysis. Also, an endobronchial brush biopsy may be performed. A small brush removes some of the cells from the surface of the airway. These cells will be sent to a laboratory at Duke University Health system to analyze the signals from the cells that may eventually led to scarring and chronic rejection of the lungs. Then, an endobronchial forceps biopsy is performed, in which one or two small pieces, each about the size of a grain of rice, of the lining of the lung's large airways is removed. A small surgical tool like tweezers is passed into the lung. Risks of biopsies may include bleeding, injury to the lung, or an air leak in the lung. This study will not have a direct benefit for participants. However, it is hoped that information gathered will enhance researchers' understanding of how lung rejection occurs.
Study identification
- NCT ID
- NCT00340418
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 120 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 80 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 22, 2005
- Primary completion
- Not listed
- Completion
- Apr 12, 2007
- Last update posted
- Jul 1, 2017
2005 – 2007
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Duke University Medical Center | Durham | North Carolina | 27710 | — |
| NIEHS, Research Triangle Park | Research Triangle Park | North Carolina | 27709 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00340418, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 1, 2017 · Synced Sep 6, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00340418 live on ClinicalTrials.gov.