Gastroesophageal Reflux Disease (GERD) Clinical Trial
— RESULTOfficial title:
Prospective and Retrospective Study to Develop a Multi-center Randomized Study, to Determine if Prevention of GERD Related Aspiration by Surgical Fundoplication Improves Lung Allograft Function
Verified date | September 2014 |
Source | Duke University |
Contact | n/a |
Is FDA regulated | No |
Health authority | United States: Institutional Review Board |
Study type | Observational |
The purpose of the prospective study is to collect information surrounding lung transplant
in order to develop a randomized study to determine if prevention of gastroesophageal reflux
disease (GERD) related aspiration (stomach acid coming up from the stomach into the
esophagus) by surgical fundoplication improves lung rejection. Lung transplantation has
evolved into an effective treatment for patients with end-stage lung disease; however, a
significant limitation to long-term survival is patients develop a condition of scarring
known as chronic lung rejection, which can cause lung function to deteriorate, thereby
reducing a patient's chances for survival. Preliminary research has shown a correlation
between the presence of gastroesophageal reflux disease (GERD) and impaired early lung
rejection as assessed by a breathing test, FEV1 (the amount of forced expired air volume in
1 second).
The Investigator is interested in learning more about this condition and the potential for
aspiration (inhaling fluid) injury. The primary goal of this preliminary study will be to
identify aspiration markers that are correlated with adverse clinical outcomes (increased
early rejection, decreased FEV1) that may be used as inclusion criteria for the future
randomized trial.
The purpose of the retrospective study is to collect information surrounding lung transplant
in order to develop a randomized study to determine if prevention of gastroesophageal reflux
disease (GERD) related aspiration (stomach acid coming up from the stomach into the
esophagus) by surgical fundoplication improves lung rejection.
The goal of this retrospective data collection is to review the following:
1. subject outcome event rates for subjects with and without gastroesophageal reflux
disease (GERD) for survival, Bronchiolitis Obliterans Syndrome (BOS), acute rejection
and Forced Expiratory Volume in the first second (FEV-1),
2. the estimated treatment effect of fundoplication on the above event rates,
3. a threshold effect for Bronchiolitis Obliterans Syndrome (BOS) and/or death are more
likely to occur at higher or more proximal acid or non-acid contact times.
This data will be collected in order to better design and coordinate a multicenter
prospective study.
Status | Completed |
Enrollment | 647 |
Est. completion date | August 2013 |
Est. primary completion date | June 2013 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 16 Years and older |
Eligibility |
Inclusion Criteria: 1. Male or non-pregnant female subject 2. 16 years of age 3. Recipient of a double-lung transplant 4. Previously have a 24-hour esophageal pH and/or impedance probe study within 12 months prior to transplant and/or within 12 months following transplantation. If the subject expired prior to 12 months from transplant date, they must have had a 24-hour esophageal pH and/or impedance probe study to be eligible in the study. Exclusion Criteria: 1. Recipient of a single-lung transplant 2. Recipient of a re-do lung transplant 3. Recipient of a double-lung/heart or double-lung/ other organ transplant 4. Do not have a 24-hour esophageal pH and/or impedance probe study within 12 months pre-transplant or within 12 months following transplantation. The subject expired less than 12 months post transplant without having a 24-hour esophageal pH and/or impedance probe study 5. No Spirometry data is available for the subject 6. Subject who is participating in any other interventional clinical study 7. Unable to provide written informed consent or participate in long-term follow-up |
Observational Model: Case-Only
Country | Name | City | State |
---|---|---|---|
Canada | University of Toronto | Toronto | Ontario |
United States | Johns Hopkins University School of Medicine | Baltimore | Maryland |
United States | Cleveland Clinic | Cleveland | Ohio |
United States | Duke University Medical Center | Durham | North Carolina |
Lead Sponsor | Collaborator |
---|---|
Duke University | National Heart, Lung, and Blood Institute (NHLBI) |
United States, Canada,
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* Note: There are 43 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | BAL aspiration markers | For the prospective study analysis, we will be assessing the relationship of gastroesophageal reflux and aspiration post lung transplantation with the occurrence of lung allograft dysfunction by reviewing BAL samples prospectively collected in approximately 125 subjects. These BAL samples will be assayed for bile acids; pepsin, pepsinogen I and II; trypsin; gastrin, and LPS content. The correlation of the aspiration biomarkers to acute rejection, BOS, death and FEV-1 at one year will be assessed. | 1 year | No |
Primary | Death | For the retrospective study, the first specific goal of data collection is outcome event rates for subjects with and without GERD for survival and the estimated treatment effect of fundoplication on the above event rates. A threshold effect for death is more likely to occur at higher or more proximal acid or non-acid contact times. Up to 5 years of follow-up data will be available for analysis with the primary comparison at one year. These data will be used to better design and coordinate a multicenter prospective study. | 1 year | No |
Primary | BOS | For the retrospective study, the second specific goal of data collection is event rates for subjects with and without GERD for BOS and the estimated treatment effect of fundoplication on the above event rates. A threshold effect for BOS is more likely to occur at higher or more proximal acid or non-acid contact times. Up to 5 years of follow-up data will be available for analysis with the primary comparison at one year. These data will be used to better design and coordinate a multicenter prospective study. | 1 year | No |
Primary | FEV-1 | For the retrospective study, the third goal of data collection is evaluation of FEV-1 changes for subjects with and without GERD and the estimated treatment effect of fundoplication. Up to 5 years of follow-up data will be available for analysis with the primary comparison at one year. Data will be used to design a multicenter prospective study, address the role of GERD in lung allograft failure, the clinical utility of surgical fundoplication in preventing lung allograft injury, and the role that acid and non-acid reflux as related to aspiration causes lung allograft injury. | 1 year | No |
Primary | Acute Rejection | For the retrospective study, the final goal of data collection is evaluation of acute rejection episodes for subjects with and without GERD and the estimated treatment effect of fundoplication. Up to 5 years of follow-up data will be available for analysis with the primary comparison at one year. Data will be used to design a multicenter prospective study and to address the role of GERD in lung allograft failure, the clinical utility of surgical fundoplication in preventing lung allograft injury, and the role that acid and non-acid reflux as related to aspiration causes lung allograft injury. | 1 year | No |
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