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Status unknownNCT02570776Updated Oct 7, 2015

UBT as a Diagnostic Tool for HP Prevalance

An observational study in Dyspepsia, sponsored by National Institute of Liver & GI Diseases, Pakistan. Status unknown at 1 site in Pakistan. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-10-07.

Sponsored by National Institute of Liver & GI Diseases, Pakistan · Observational

The sponsor has not verified this record recently (last verified Oct 2015), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
200
Ages
18 Years and older
Sex
All
01

Study summary

The prevalence of H. pylori infection in Pakistan is unknown and investigators want to assess it in dyspeptic patients utilizing UBT. At the same time investigators want to validate UBT sensitivity and specificity in Pakistani patients

Read the detailed description

The non-invasive methods for the diagnosis of Hp are the Urea Breath Test (UBT) and serological tests. The serological tests includes ELISA test in serum for Hp antibody and in stool for Hp antigen. Serum ELISA Hp antibody is not sensitive for showing active infection and the titres do not decrease even after successful eradication. Serology test cannot be used for those who have previously been treated for Hp, as the decline in titre of Hp antibodies is too slow to be of practical use. The stool Hp antigen detection test is more sensitive and specific as it detects bacterial antigens which will only be positive in the presence of Hp. However, it is cumbersome to collect stool and laboratory services are required. The C14 Urea Breath Test (UBT) is an office based test with sensitivity and specificity comparable to that of the stool antigen test. The diagnostic validity of these tests depends on the prevalence of H pylori infection. A higher prevalence would be associated with higher sensitivity and lower specificity. The safety profile of the urea breath test is very favourable, and no major side effects are associated with it. The aims of this study are to estimate H pylori prevalence in Pakistan among the adult dyspeptic population and to validate the sensitivity and specificity UBT in our population

02

Conditions studied

  • Dyspepsia

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Keywords

  • Helicobacter pylori
  • UBT
  • Sensitivity
  • specificity
  • prevalence
03

In context

Dyspepsia

363 studies on the registry are indexed under Dyspepsia; 51 are open to participants now.

This study's planned enrollment of 200 is close to the median of 192 across 56 observational studies indexed under Dyspepsia.

Browse Dyspepsia studies →

Lead sponsor

This is the only study on the registry with National Institute of Liver & GI Diseases, Pakistan as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients getting routine upper GI Endoscopy are enrolled and as per routine histopathology samples are taken to assess Helicobacter pylori. This assessment will be done by two independent histopathologists \& later the results will be compared with C14 UBT taking histopathology as gold standard.

Inclusion criteria

  • Male and female subjects with dyspeptic symptoms (B1 Criteria of FD)
  • Subject who has not been treated for H pylori eradication in the past
  • Age above 18 years
  • No Alarm symptoms of :

    • Gastrointestinal Bleeding
    • Anemia
    • Early satiety
    • Unexplained weight loss
    • Progressive dysphagia
    • Odynophagia
    • Recurrent vomiting
    • Family history of GI malignancy
    • Previous GI malignancy

Exclusion criteria

Exclusion Criteria:

  • Pregnant females
  • Use of NSAIDs
  • Use of anti- secretory agent (H2 blockers) and proton pump inhibitors in previous 4 weeks
  • Use of anti- microbial agents (Clarithromycin, Metronidazole, Amoxacillin, quinalones) or bismuth in last 4 weeks
  • .Gastric and/or duodenal erosions or ulcers, polyps or malignancy if noted on endoscopy will be excluded.
  • Patients with predominant symptoms or gastro esophageal reflux disease (GERD) or Endoscopic evidence of esophagitis.
  • Patients with abnormal upper abdominal ultrasound.
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
200 participants (estimated)
Patient registry
No

Groups and cohorts

  • observation

    Cohort of patients for Endoscopy \& they are assessed for Helicobacter pylori through the histopathology \& also throgh C14 C UBT.

06

What researchers measure

Primary outcomes

  1. Prevalence of H pylori infection in Pakistani polulation

    Prevalence of H pylori will be assessed by UBT \& confirmed with histopathology as gold standard \& sensitivity \& specificity will be calculated.

    Time frame: 1 day

Secondary outcomes

  1. Sensivity & specificity of Heliprobe (C14 UBT system) in local population

    Sensitivity \& specificity will be measured by number of subjects positive based on ROC

    Time frame: 1 day

07

Study locations

1 of 1 sites recruiting
  • National Institute of Liver & GI Diseases, Dow University of Health Sciences
    Karachi, Sindh 0042, Pakistan
    • Zahid Azam, FCPS, MSc · Contact · zahid.azam@duhs.edu.pk · +922199261462
    • Abdullah Khalid, MBBS; FCPS · Contact · abdullah.khalid@duhs.edu.pk · +922199261462
    • Zahid Azam, FCPS; MSc · Principal investigator
    • Abdullah Khalid, MBBS; FCPS · Sub investigator
    • Shahid majid, MBBS; FCPS · Sub investigator
    • Sattar Abdul, MBBS; FCPS · Sub investigator
    • Hafeezullah Shaikh, MBBS; FCPS · Sub investigator
    • Sabhita Shabbir, MBBS; FCPS · Sub investigator
    • Tayyab Usmani, MBBS; FCPS · Sub investigator
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 7, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02570776
Lead sponsor
National Institute of Liver & GI Diseases, Pakistan
Collaborators
Abbott
Responsible party
Dr. Zahid Azam (Professor Medicine & Gastroenterology, National Institute of Liver & GI Diseases, Pakistan) — Principal investigator
First posted
Oct 7, 2015
Start date
Dec 2013
Primary completion
Dec 2015 (estimated)
Completion
Feb 2016 (estimated)
Last update
Oct 7, 2015

Study contacts

Zahid Azam, FCPS, MSc
principal investigator · National Institute of Liver & GI Diseases, Dow University of Health Sciences

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Oct 2015. You cannot join it, but the record below documents what was studied.

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