Pre-diabetes, diabetes and gastric cancer risk

  • Zheng J & al.
  • Br J Cancer
  • 7 May 2019

  • curated by Sarfaroj Khan
  • UK Clinical Digest
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Takeaway

  • This study found no significant association between pre-diabetes or diabetes and the risk for gastric adenocarcinoma.

Why this matters

  • Studies examining the association between diabetes and risk of gastric adenocarcinoma have provided inconsistent results.

Study design

  • A cohort study of 111,198 participants recruited in the Northern Swedish Health and Disease Study between November 1985 and April 2017.
  • The exposure to pre-diabetes or diabetes was evaluated by oral glucose tolerance tests (blood glucose measured at fasting and 2-hour later after a 75 g oral glucose load).
  • Main outcome: newly diagnosed gastric adenocarcinoma during the follow-up.
  • Funding: Swedish Research Council and Cancer Society.

Key results

  • Of 111,198 participants, 23,900 (21.5%) had pre-diabetes, 5958 (5.4%) had diabetes and 81,340 (73.1%) were normoglycaemic.
  • During the follow-up, 219 (0.2%) participants developed gastric adenocarcinoma.
  • In separate analysis, risk for gastric adenocarcinoma was not significantly higher in pre-diabetes (adjusted HR [aHR], 1.07; 95% CI, 0.79-1.44) and diabetes (aHR, 0.77; 95% CI, 0.46-1.29) groups vs normoglycaemic group.
  • No associations were observed between pre-diabetes or diabetes and the risk for gastric adenocarcinoma in analyses stratified by covariates or separating cardia and non-cardia gastric adenocarcinoma.

Limitations

  • Risk of residual confounding.

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