Journal Article

Hematopoietic cancer and peptic ulcer: a multicenter case-control study

Paolo Vineis, Paolo Crosignani, Carlotta Sacerdote, Arabella Fontana, Giovanna Masala, Lucia Miligi, Oriana Nanni, Valerio Ramazzotti, Stefania Rodella, Emanuele Stagnaro, Rosario Tumino, Clotilde Viganò, Carla Vindigni and Adele Seniori Costantini

in Carcinogenesis

Volume 20, issue 8, pages 1459-1464
Published in print August 1999 | ISSN: 0143-3334
Published online August 1999 | e-ISSN: 1460-2180 | DOI: https://dx.doi.org/10.1093/carcin/20.8.1459
Hematopoietic cancer and peptic ulcer: a multicenter case-control study

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Helicobacter pylori has been suggested as a cause of gastric carcinoma and gastric non-Hodgkin's lymphoma (NHL). In a previous cohort study, a relative risk of six for gastric NHL was reported among subjects who tested positive for anti-H.pylori antibodies. The association between peptic ulcer and NHL has been studied in a population-based case-control investigation on hemato-lymphopoietic malignancies in Italy, based on face-to-face interviews to 2671 cases and 1718 controls (refusal rates 10 and 19%, respectively). Subjects who reported a diagnosis of peptic ulcer had a relative risk of 5.6 [95% confidence interval (CI) 3.8–8.0] for gastric NHL, whereas the estimate for non-gastric NHL was 1.3 (1.0–1.6). The association with recent diagnosis of ulcer was stronger, but the odds ratio (OR) was as high as 2.1 (95% CI 1.1–4.2) after ≥20 years since such diagnosis. After exclusion of the last 2 years before the diagnosis of NHL, and of ulcers diagnosed before 1978 (when gastroscopy became common in Italy), the OR was still 5.3 (95% CI 3.0–9.2). We found a strong effect modification by educational level, with ORs for ulcer more elevated in higher social groups. Gender was an effect modifier (OR = 4.1 in males, 9.2 in females; P = 0.03 for heterogeneity). The association with other gastrointestinal pathologies was much lower and statistically not significant. Almost all gastric lymphomas were B-cell NHLs of intermediate grade according to the working formulation; the majority belonged to the mucosa-associated lymphoid tissue (MALT) type. The association with ulcer was much stronger among MALT lymphomas, but only for recent ulcer diagnoses (2–10 years). Our study shows an increased risk for gastric NHL, very similar to the estimate reported in a previous cohort study. The risk was higher among more educated subjects.

Keywords: CI, confidence interval; CLL, chronic lymphocytic leukemia; HD, Hodgkin's disease; LL, lymphocytic leukemia; ML, myeloid leukemia; NHL, non-Hodgkin's lymphoma; OR, odds ratio

Journal Article.  3820 words. 

Subjects: Clinical Cytogenetics and Molecular Genetics

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