- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02359942
The Diagnostic Validity of the Urea Breath Test
The Effect of Citric Acid as the Test Meal on the Diagnostic Accuracy of the 13C-Urea Breath Test in Korean, Randomized Controlled, Open Label Prospective Study
- To compare the diagnostic accuracy of the 13C-Urea breath test between using the citric acid as test meal and controlled group by endoscopic biopsy methods(histology, CLOtest and H. pylori culture).
- To compare the delta value of 13CO2 results between before and after ingestion of citric acid as test meal.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
1-1 Screening (visit 1, From -6 to -8 weeks) and H. pylori eradication
- To accept the agreement, confirm inclusion/exclusion criteria, and evaluate the baseline characteristics of patients
H. pylori eradication
- First eradication: PPI-based triple therapy (standard dose of PPI b.i.d., clarithromycin 500 mg b.i.d., and amoxicillin 1 g b.i.d. for 1 week), and sequential therapy (initial 5-day therapy with a combination of PPI b.i.d and amoxicillin 1g b.i.d, followed by 5 days of PPI b.i.d., clarithromycin 500mg b.i.d., and metronidazole 500mg t.i.d)
- Rescue therapy: bismuth-containing quadruple therapy [PPI b.i.d., tripotassium dicitrate bismuthate 300 mg q.i.d. (three tablets at 30 min before meals and one tablet at 2 hours after dinner), metronidazole 500 mg t.i.d., and tetracycline 500 mg q.i.d.] for 1-2 weeks, or moxifloxacin-containing triple therapy (moxifloxacin 400 mg q.d., amoxicillin 1g b.i.d., and PPI b.i.d.) for 1-2 weeks.
1-2 Baseline (visit 2, 0 week): urea breath test
- Reconfirm inclusion and exclusion criteria
- Randomization for UBT test (citric acid group vs control group)
- In citric acid group: taking 4 g of citric acid solving in 200 ml of water 10 minutes before UBT.
- Perform UBT in both group
1-3) Endoscopic surveillance (visit 3, 6 or later months)
Endoscopic surveillance for final H. pylori status after UBT
- Histology, CLOtest or H. pylori culture
- Statical analysis for diagnostic accuracy of the UBT between citric acid group and controlled group: sensitivity, specificity, positive predictive value, negative predictive value, false positive rate, and false negative rate.
2. Selecting 40 patients who showed UBT result between 2.5 to 4.0 in controlled group, the investigators are planning to reperform 13C-UBT after giving citric acid as test meal.
And then, the investigators compare the change of UBT result before and after ingestion citric acid as test meal.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Seongnam, Korea, Republic of
- Seoul National University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Male and female Korean adult (Aged over 18 years)
- The Patients who diagnosed H. pylori infection and received H. pylori eradication therapy
Exclusion Criteria:
- Age under 18 years
- Patients who took any drug which could affect the study results such as proton pump inhibitor, H2 blocker, mucosal protective agents and antibiotics
- Advanced gastric cancer or other malignancy
- Abnormal liver function test or liver cirrhosis
- Abnormal renal function or chronic kidney disease
- Other severe concurrent disease
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: Randomized
- Interventional Model: Parallel Assignment
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Citric acid group
Giving the citric acid (4g) as test meal before UBT
|
Giving the citric acid (4g) solving in 200 ml of water before UBT
|
No Intervention: Controlled group
No use of test meal
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of participants who showed discrepant result between UBT result and endoscopic result in both citric acid group and controlled group
Time Frame: 6 months or later after urea breath test
|
After urea breath test in the two group (citric acid group vs controlled group), endoscopic surveillance would be performed for confirmation of H. pylori status by endoscopic biopsy methods(histology, CLOtest or culture).
|
6 months or later after urea breath test
|
Compare the diagnostic accuracy which is a composite outcome measure such as sensitivity, specificity, predictive positive value and negative predictive value between citric acid group and controlled group
Time Frame: 6 months or later after urea breath test
|
Comparing the final H. pylori status between UBT method and endoscopic biopsy methods, we will evaluate the diagnostic accuracy (sensitivity, specificity, false positive ratio, false negative ratio, positive predictive value and negative predictive value) of the UBT between using citric acid group and controlled group.
|
6 months or later after urea breath test
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- B-1412/279-004
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Helicobacter Pylori Infection
-
Bangabandhu Sheikh Mujib Medical University, Dhaka...RecruitingHelicobacter Pylori Infection | Helicobacter Pylori EradicationBangladesh
-
Shandong UniversityRecruitingHelicobacter Pylori Infection | Patient Education | Helicobacter Pylori EradicationChina
-
Shandong UniversityCompletedHelicobacter Pylori Infection Helicobacter Pylori Eradication Patient EducationChina
-
Shanghai Jiao Tong University School of MedicineCompletedCure Rate of Helicobacter Pylori InfectionChina
-
Seoul National University Bundang HospitalRecruitingHelicobacter Pylori Infection | Helicobacter Pylori 23S rRNA Clarithromycin Resistance Mutation | Helicobacter Pylori Associated Gastrointestinal Disease | Helicobacter Pylori Infection, Susceptibility toKorea, Republic of
-
The First Affiliated Hospital of Nanchang UniversityUnknownBacterial Infection Due to Helicobacter Pylori (H. Pylori) | Eradication Therapy of Helicobacter Pylori | Detection of Helicobacter PyloriChina
-
Tanta UniversityNot yet recruitingPersistent Helicobacter Pylori InfectionEgypt
-
Nanjing First Hospital, Nanjing Medical UniversityCompletedHelicobacter Pylori 23S rRNA/gyrA Gene Mutation Detection Kit (Fluorescence PCR Fusion Curve Method)Helicobacter Pylori Infection | Helicobacter Pylori gyrA Levofloxacin Resistance Mutation | Fecal Drug Resistance Gene Detection | Helicobacter Pylori Infection, Susceptibility toChina
-
Kaohsiung Veterans General Hospital.Kaohsiung Medical University Chung-Ho Memorial HospitalCompletedHelicobacter Pylori InfectionTaiwan
-
National Taiwan University HospitalCompleted
Clinical Trials on Citric acid
-
Infante, Javier Molina, M.D.UnknownColonoscopy | Bowel CleansingSpain
-
Lundquist Institute for Biomedical Innovation at...Completed
-
British Columbia Cancer AgencyUnknown
-
Ain Shams UniversityCompletedIntrabony Periodontal Defect
-
Universitat Internacional de CatalunyaKlockner Implant SystemNot yet recruitingPeri-Implantitis | Implant Infection | Microbial Disease
-
Texas Tech University Health Sciences Center, El...Withdrawn
-
Nada YousefUnknownHead and Neck CancerEgypt
-
Hull University Teaching Hospitals NHS TrustCompleted
-
Rambam Health Care CampusUnknownInadequate Preparation for Colonoscopy; Personalized Colonoscopy PreparationIsrael