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Relationship Between Aspirin Use and Site-Specific Colorectal Cancer Risk Among Individuals With Metabolic
Seokyung An1, Madhawa Gunathilake1, Jeonghee Lee1
1Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
Background:
The relationship between aspirin usage and the risk of colorectal cancer (CRC) among individuals with both hypertension (HTN) and diabetes mellitus (DM) remains unclear. This study aims to explore the impact of aspirin use on the site-specific CRC risk in patients with metabolic comorbidity.
Methods:
A case-control study was conducted among 1,331 CRC patients and 2,771 controls recruited from the Nation Cancer Center in Korea. Multinomial logistic regression analyses were used to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) for the association between aspirin use, metabolic disease status, and site-specific CRC risk.
Results:
Among the 4,102 participants, 1,191 individuals had neither HTN nor DM, 2,044 were diagnosed with HTN, 203 with DM, and 664 presented with HTN and DM comorbidity. An increasing number of HTN and DM was associated with an increased risk of overall CRC (HTN or DM: OR, 1.70; 95% CI, 1.39-2.07; HTN and DM: OR, 8.43; 95% CI, 6.37-11.16), while aspirin use was associated with a decreased risk of overall CRC (OR, 0.31; 95% CI, 0.21-0.46). These results remained consistent across anatomical sites. Among individuals with HTN and DM comorbidity, aspirin use notably associated with lower risk of overall CRC (OR, 0.39; 95% CI, 0.21-0.72), proximal colon (OR, 0.32; 95% CI, 0.13-0.71) and rectal cancer (OR, 0.27; 95% CI, 0.08-0.97), but not distal colon cancer (OR, 0.58; 95% CI, 0.27-1.24).
Conclusion:
This study showed that aspirin use is negatively associated with overall and site-specific CRC, even among individuals with HTN and DM comorbidity.
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