OBJECTIVE: The association between antipsychotic use and gastric cancer risk remains unclear. Therefore, this study aimed to determine the association between antipsychotic exposure and the incidence of gastric cancer. METHODS: Using a nested case-control design, a total of 34 470 gastric cancer patients and 163 430 nongastric cancer controls were identified from Taiwan's National Health Insurance Research Database between 1 January 1997 and 31 December 2013. We analyzed the data using a conditional logistic regression model to adjust for possible confounding variables. RESULTS: Antipsychotic use was independently inversely associated with gastric cancer risk after controlling for potential confounding factors including income, urbanization, medications, physical and medical illness, aspirin use, nonsteroidal anti-inflammatory drug use and triple therapy. In addition, dose-dependent trends against gastric cancer risk were also shown with individual antipsychotic compounds including thioridazine, haloperidol, sulpiride, clozapine, olanzapine, quetiapine, amisulpride, and risperidone. A sensitivity analysis showed that second-generation antipsychotics had significant dose-dependent effects in reducing the risk of gastric cancer risk in patients with and without peptic ulcer disease. CONCLUSIONS: Antipsychotic use was inversely associated with gastric cancer risk, and dose-dependent effects against gastric cancer were also seen with several individual antipsychotic compounds.
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Cancer Research
Hsieh, Y. H., Chan, H. L., Lin, C. F., Liang, S. H. Y., Lu, M. L., McIntyre, R. S., Lee, Y., Lin, T. C., Chiu, W. C., & Chen, V. C. H. (2019). Antipsychotic use is inversely associated with gastric cancer risk: A nationwide population-based nested case-control study. Cancer Medicine, 8(9), 4484-4496. https://doi.org/10.1002/cam4.2329