Acid-suppressing therapies and subsite-specific risk of stomach cancer

Wennerström, E.C.M. et al. (2017) British Journal of Cancer 116(4) pp. 1234-1238

https://www.flickr.com/photos/collingrady/6288246400

Image source: Collin Grady – Flickr // CC BY 2.0

Image shows Pepcid AC, a H2RA.

Background: Associations of stomach cancer risk with histamine type-2 receptor antagonists (H2RA) and proton-pump inhibitors (PPI) are controversial. We hypothesised that proximal extension of Helicobacter pylori infection from acid suppression would disproportionately increase cancers at proximal subsites.

Conclusions: Moderate exposures to acid-suppressive drugs did not favour proximal tumour localisation. Given confounding by indication, these findings do not resolve potential contribution to gastric carcinogenesis overall.

Read the full abstract here

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