Published in:
01-09-2018 | Original Article
Family history of cancer in first-degree relatives and risk of gastric cancer and its precursors in a Western population
Authors:
Minkyo Song, M. Constanza Camargo, Stephanie J. Weinstein, Ana F. Best, Satu Männistö, Demetrius Albanes, Charles S. Rabkin
Published in:
Gastric Cancer
|
Issue 5/2018
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Abstract
Background
Family history may inform risks of gastric cancer and preneoplastic lesions.
Methods
We examined associations with history of cancer in first-degree relatives for 307 incident gastric cancer cases among 20,720 male smokers in a prospective study in Finland. Cox regression was used to calculate gastric cancer hazard ratios (HR) and 95% confidence intervals (95% CI). Logistic regression was used to estimate odds ratios (OR) and 95% CIs for low serum pepsinogen, a marker of gastric atrophy.
Results
Gastric cancer risk was associated with gastric cancer history in first-degree relatives overall (HR 1.56, 95% CI 1.15–2.12), in fathers (HR 1.67, 95% CI 1.09–2.55) and in siblings (HR 2.05, 95% CI 1.25–3.38). Associations were significant for noncardia (HR 1.83, 95% CI 1.30–2.57) but not cardia (HR 0.93, 95% CI 0.46–1.87) cancers, and marginal for both intestinal—(HR 1.53, 95% CI 0.92–2.55) and diffuse-type (HR 1.47, 95% CI 0.72–3.03) histologies. Family history of other cancer types was not associated with gastric cancer risk. Family history of gastric cancer was associated with low pepsinogen (OR 1.29, 95% CI 1.11–1.50).
Conclusions
Family history of gastric cancer is strongly associated with specific subtypes of gastric cancer as well as with gastric atrophy, a risk factor for developing this malignancy.