Prevalence of Helicobacter pylori Exposure and Risk Factors Among BRCA1 and BRCA2 Carriers
One in six hereditary cancer carriers carry H. pylori bacteria linked to stomach cancer, suggesting targeted screening could identify at-risk individuals.
This study quantified H. pylori seropositivity in 1327 US hereditary cancer mutation carriers from the Penn Basser Center, finding 17.4% exposure prevalence in BRCA1/2 carriers and similar rates in PALB2/ATM/TP53 carriers, with non-White race as a key risk factor. The findings are clinically relevant given recent Japanese data showing dramatically elevated gastric cancer risk in H. pylori-positive BRCA carriers, though similar large studies confirming this risk in Western populations are pending.
What the study was
- Study design
- Cross-sectional serological study
- Population
- BRCA1/BRCA2 PGV carriers (n=1034), plus PALB2/ATM/TP53 carriers (n=293); US-based Basser Center cohort
- Sample size
- 1327
- Category
- Prevention
- Maturity
- Exploratory
- Journal
- International Journal of Cancer
Why it surfaced
Addresses a gap in hereditary cancer surveillance — whether BRCA1/2 carriers should be screened and treated for H. pylori as a gastric cancer risk modifier. Large cohort from a leading hereditary cancer center (Penn/Basser); actionable if confirmed by outcomes studies.
A plain-language summary of published research — not medical advice. Talk to a clinician about your own care.