Non-steroidal anti-inflammatory drugs, polygenic risk score and colorectal cancer risk.
Abstract
The regular use of non-steroidal anti-inflammatory drugs (NSAIDs) has been associated with reduced colorectal cancer (CRC) risk. To explore whether this association varies according to background polygenic risk for CRC. Data were collected from a large population-based case-control study on CRC in Germany. A polygenic risk score (PRS) based on 140 CRC-related risk loci was used to quantify the genetic risk. The associations of regular use of NSAIDs (≥2times per week for at least 1 year) with CRC risk were estimated in the whole population and in subgroups according to PRS levels using multivariable logistic regression. The impact of NSAIDs on CRC risk was compared to PRS using the 'genetic risk equivalent' (GRE), a recently developed metric for effective risk communication. In total 5129 CRC cases and 4093 controls were included in this analysis. The regular use of NSAIDs (including aspirin) was associated with reduced CRC risk [odds ratio (OR) 0.66, 95% confidence interval (CI) 0.59, 0.74], as was regular use of aspirin only (OR 0.73, 95% CI 0.65, 0.83), without indication of interaction with the PRS (P = 0.10 and 0.22 respectively). The effect of NSAID use was equivalent to the effect of having a 32 percentiles lower PRS (GRE...Continue Reading
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