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Screening Strategy for Gastric Cancer Prevention

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National Taiwan University

Status

Enrolling

Conditions

H. Pylori Infection

Treatments

Diagnostic Test: HPSA
Diagnostic Test: UBT and HPSA
Diagnostic Test: Serology (two stage)
Diagnostic Test: UBT

Study type

Interventional

Funder types

Other

Identifiers

NCT05387005
202203064RINC

Details and patient eligibility

About

There are still some unsolved questions regarding population-based screening program for H. pylori infection to prevent gastric cancer, such as how to perform the optimal screening strategies. A prospective, randomized trial will be conducted to compare the acceptability, compliance (/adherence), and accuracy of diagnostic tests in a population-based H. pylori screening and gastric cancer prevention program.

Initially, we planned to recruit 10,000 adults aged ≥20 years who had not previously undergone H. pylori screening or treatment. Eligible participants were to be randomly allocated in a 1:1:1:1 ratio to one of four groups, each receiving a different combination of diagnostic tests. However, a preliminary analysis led to a recalculation of the required sample size. Following the approval of an Institutional Review Board (IRB) amendment, enrollment was discontinued for Group B (HpSA method) and Group D (Two-stage screening method). The final number of participants enrolled in Group B and Group D was 852 and 851, respectively. Groups A (UBT method) and Group C (standard method) will continue to enroll participants through an additional 1:1 randomization until each group reaches a total of 1,350 participants.

Full description

Background: There are still some unsolved questions regarding population-based screening program for H. pylori infection to prevent gastric cancer, such as how to perform the optimal screening strategies.

Objective: A prospective, randomized trial will be conducted to compare the acceptability, compliance (/adherence), and accuracy of C13 UBT and HpSA in a population-based H. pylori screening and gastric cancer prevention program.

Methods:Open labeled, randomized controlled trial Initially, the investigators will recruit adults with age of ≥20 years who have not received H. pylori screening or treatment. Eligible patients were randomly 1:1:1:1 allocated to (A) The carbon-13 urea breath test (C13 UBT), (B) H. pylori stool antigen test (Vstrip® HpSA), (C) Standard method (Both C13 UBT and HpSA), (D) Two-stage screening method (serology screening only, and then C13 UBT for confirmation if serology test is positive). However, a preliminary analysis led to a recalculation of the required sample size. Following the approval of an Institutional Review Board (IRB) amendment, enrollment was discontinued for Group B and Group D. The final number of participants enrolled in Group B and Group D was 852 and 851, respectively. Groups A and Group C will continue to enroll participants through an additional 1:1 randomization until each group reaches a total of 1,350 participants.

Outcome analysis:

  1. Detection rate of H. pylori infection
  2. To compare the compliance(/adherence) of screening tests for H. pylori infection in the two randomized groups.
  3. To assess the diagnostic accuracy of these tests.
  4. To verify the compliance(/adherence) and feasibility of this two-stage screening method
  5. Long-term Outcomes: To assess the risk reduction of gastric cancer

Enrollment

4,403 estimated patients

Sex

All

Ages

20+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Adults aged 20 years or older
  • Never screened and treated for H. pylori infection

Exclusion criteria

  • Ever undergone gastrectomy
  • Patients with gastric cancer
  • Have been screened or tested for H. pylori infection
  • Ever received H. pylori eradication therapy
  • Have taken proton pump inhibitor within two weeks
  • Have taken antibiotics within two weeks

Trial design

Primary purpose

Diagnostic

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

4,403 participants in 4 patient groups

UBT
Experimental group
Treatment:
Diagnostic Test: UBT
HpSA
Experimental group
Treatment:
Diagnostic Test: HPSA
Standard method
Experimental group
Treatment:
Diagnostic Test: UBT and HPSA
Two-stage screening method
Experimental group
Treatment:
Diagnostic Test: Serology (two stage)

Trial contacts and locations

1

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Central trial contact

Jyh-Ming Liou, MD,PhD

Data sourced from clinicaltrials.gov

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