This is a new challenge, which we announced in March 2025. It is open for Expressions of Interest, with the successful team(s) being awarded up to £20m ($25m) to tackle it. Submissions are due by 18 June 2025.
Cancer research has traditionally focused on identifying drivers of cancer rather than barriers to its development. Intriguingly, there are sub-sets of individuals with well-established cancer risks who, despite this predisposition, never develop cancer. For example, over 20% of patients with BRCA1 germline mutations, will not get cancer and only 10-20% of heavy smokers will suffer from lung cancer, in their lifetimes. Furthermore, although cancer risk generally increases with age, paradoxically, after age 80-85, the incidence of many cancers starts to plateau or even decline.
Similarly, certain human progeria syndromes, such as Hutchinson-Gilford, appear resistant to cancer despite significant cellular stress. Additionally, some larger long-lived mammals exhibit unexpectedly low cancer incidence, a phenomenon known as Peto’s paradox.
Several biological and epidemiological explanations have been proposed to explain these observations. However, the mechanistic basis underlying these phenomena remain unexplained.
This challenge seeks to uncover the biological mechanisms underpinning tumour resilience in the host to understand what protects certain individuals from developing cancer.
This challenge will identify the underlying mechanisms as to why some individuals manage to avoid cancer, despite predisposition, due to genetic or lifestyle risk factors or extreme old age.
These findings could change our understanding of cancer development, inform novel therapeutic approaches and ultimately help devise cancer prevention strategies for the general population.
Mechanisms that prevent cancer initiation and development are likely diverse, involving a complex interplay of molecular, cellular, and systemic factors such as immune surveillance, inflammation, lifestyle and environmental exposures, including diet. Individuals may also possess rare protective mechanisms against tumour initiation, making them difficult to detect.
A major challenge in understanding cancer evasion is the scarcity of longitudinal data on high-risk individuals who remain cancer-free. Additional complexities include the influence of risk-reducing strategies and selection bias, known as the ‘Survivor Effect’.
Addressing this challenge may require a systems-wide approach, utilising adequately powered and phenotypically rich cohorts and integrating fields such as, but not limited to genomics, ageing, immunology, metabolism, epidemiology, comparative zoology and artificial intelligence.
Sponsor Institute/Organizations: Cancer Grand Challenges
Sponsor Type: Corporate
Address: 2 Redman Place London, E20 1JQ
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Jun 18, 2025
Oct 23, 2025
$25,571,300
£20 million
Affiliation: Cancer Grand Challenges
Address: 2 Redman Place London, E20 1JQ
Website URL: https://www.cancergrandchallenges.org/cancer-avoidance
Disclaimer:It is mandatory that all applicants carry workplace liability insurance, e.g., https://www.protrip-world-liability.com (Erasmus students use this package and typically costs around 5 € per month - please check) in addition to health insurance when you join any of the onsite Trialect partnered fellowships.