Gastric cancer screening: Is a targeted approach better than a general one? This is the question at the heart of an ongoing study exploring the most effective ways to prevent stomach cancer in Europe. The European Union's 'Beating Cancer Plan' has set the stage for this critical research, and the findings could reshape how we approach gastric cancer prevention.
The Problem: Gastric cancer screening is a vital component of the 'Beating Cancer Plan' in Europe. The primary focus of the study is to determine the most effective approach to gastric cancer screening. The study is being conducted by the TOwards GAstric cancer Screening (TOGAS) consortium. A key element in this strategy involves identifying and eliminating Helicobacter pylori (H. pylori), a bacterium strongly linked to gastric cancer. But here's where it gets interesting: the risk isn't uniform. In Western Europe, the incidence of both H. pylori infection and gastric cancer is higher among men, smokers, and individuals with lower socioeconomic status. These groups often have less engagement with standard preventative health services.
The Study's Goal: This pilot study, conducted in Ireland, aimed to compare two screening methods: targeted screening in high-risk workplaces versus population-based screening through general practitioner invitations. The researchers wanted to see which approach led to better participation and outcomes. They focused on key measures such as how many people responded to invitations, the prevalence of H. pylori infection, and the success of treatment.
How They Did It: The study recruited individuals aged 30–34 years from January 2024 to March 2025. Participants were divided into two groups:
- General Population Group (GPG): Invited through their general practitioners.
- Targeted Group (TG): Screened at their workplaces, specifically in the Irish Defence Forces and the Construction Workers Health Trust, representing higher-risk, male-dominated workforces.
Those with a prior H. pylori treatment or gastrectomy were excluded. All participants underwent a blood test to detect H. pylori antibodies. The TG received initial on-site screening, while the GPG attended a local hospital. Those with positive results underwent a confirmatory breath test. Confirmed cases received a 10-day course of medication. Eradication was assessed at least 6 weeks after treatment. The researchers then analyzed response rates, demographics, infection prevalence, and treatment outcomes using statistical tests.
The Results: A total of 3,030 individuals were invited to participate: 2,824 in the GPG and 206 in the TG. The invitation response and participation rates were significantly higher in the TG compared to the GPG. The H. pylori seroprevalence rates were similar between groups. The overall 'true' prevalence rates, based on both blood and breath tests, were 10% in the TG versus 14% in the GPG. Treatment adherence was high in both groups, with eradication rates exceeding 89%.
Key Findings: Targeted occupational screening showed superior response and engagement rates compared to general practice-based screening. The study suggests that this approach may be a more efficient strategy in countries with low-to-intermediate risk.
But what does this mean for you? The study suggests that targeted screening might be a more effective way to catch and treat H. pylori in high-risk groups. However, the study is still ongoing, and more research is needed to determine the best approach for different populations.
What do you think? Do you believe targeted screening is a more effective use of resources? Share your thoughts in the comments below!
