Abstract The remarkably consistent evidence demonstrating that aspirin is associated with a lower risk of colorectal cancer led to a first-if-its-kind U.S. Preventive Services Task Force (USPSTF) recommendation for population use of aspirin for cancer prevention. However, in 2022 the USPSTF reversed this recommendation based largely on data from the Aspirin to Prevent Events in the Elderly randomized trial of aspirin in older adults. Surprisingly, the ASPREE trial showed that aspirin increased the risk of cancer-related death after 4.7 years of follow-up. These results suggest the intriguing possibility that aspirin may have a differential effect on cancer risk according to age and highlights the limitation of a “one-size-fits-all” approach to aspirin prevention. To date, the paradigm of “precision medicine,” the use of molecular biomarkers to optimize treatment response that has revolutionized cancer care has not been readily translated to cancer prevention. This situation is largely due to knowledge gaps regarding the biological mode-of-action of most preventive agents. In this presentation, Dr. Chan will discuss opportunities for developing precision prevention approaches for promising agents such as aspirin for future clinical translation. Citation Format: Andrew T Chan. Aspirin and cancer: what’s next? [abstract]. In: Proceedings of the AACR Special Conference: Precision Prevention, Early Detection, and Interception of Cancer; 2022 Nov 17-19; Austin, TX. Philadelphia (PA): AACR; Can Prev Res 2023;16(1 Suppl): Abstract nr IA003.
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